From: "Mike Pagano" <mpagano@gentoo.org>
To: gentoo-commits@lists.gentoo.org
Subject: [gentoo-commits] proj/linux-patches:4.4 commit in: /
Date: Tue, 12 Nov 2019 20:57:12 +0000 (UTC) [thread overview]
Message-ID: <1573592217.7bc9b0e186f228b76da0248ff43277940ebdce15.mpagano@gentoo> (raw)
commit: 7bc9b0e186f228b76da0248ff43277940ebdce15
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue Nov 12 20:56:04 2019 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue Nov 12 20:56:57 2019 +0000
URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=7bc9b0e1
Linux patch 4.4.201
Signed-off-by: Mike Pagano <mpagano <AT> gentoo.org>
0000_README | 4 +
1200_linux-4.4.201.patch | 2748 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 2752 insertions(+)
diff --git a/0000_README b/0000_README
index d0158f0..bc6711a 100644
--- a/0000_README
+++ b/0000_README
@@ -843,6 +843,10 @@ Patch: 1199_linux-4.4.200.patch
From: http://www.kernel.org
Desc: Linux 4.4.200
+Patch: 1200_linux-4.4.201.patch
+From: http://www.kernel.org
+Desc: Linux 4.4.201
+
Patch: 1500_XATTR_USER_PREFIX.patch
From: https://bugs.gentoo.org/show_bug.cgi?id=470644
Desc: Support for namespace user.pax.* on tmpfs.
diff --git a/1200_linux-4.4.201.patch b/1200_linux-4.4.201.patch
new file mode 100644
index 0000000..5d41eec
--- /dev/null
+++ b/1200_linux-4.4.201.patch
@@ -0,0 +1,2748 @@
+diff --git a/Makefile b/Makefile
+index 8715489f3462..a86c8aa98dbe 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 4
+-SUBLEVEL = 200
++SUBLEVEL = 201
+ EXTRAVERSION =
+ NAME = Blurry Fish Butt
+
+diff --git a/arch/x86/kernel/cpu/perf_event_amd_ibs.c b/arch/x86/kernel/cpu/perf_event_amd_ibs.c
+index 989d3c215d2b..66ca6ec09bd4 100644
+--- a/arch/x86/kernel/cpu/perf_event_amd_ibs.c
++++ b/arch/x86/kernel/cpu/perf_event_amd_ibs.c
+@@ -555,7 +555,7 @@ static int perf_ibs_handle_irq(struct perf_ibs *perf_ibs, struct pt_regs *iregs)
+ if (event->attr.sample_type & PERF_SAMPLE_RAW)
+ offset_max = perf_ibs->offset_max;
+ else if (check_rip)
+- offset_max = 2;
++ offset_max = 3;
+ else
+ offset_max = 1;
+ do {
+diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c
+index db58c8d664c2..6188b70c2790 100644
+--- a/drivers/gpu/drm/i915/i915_cmd_parser.c
++++ b/drivers/gpu/drm/i915/i915_cmd_parser.c
+@@ -50,13 +50,11 @@
+ * granting userspace undue privileges. There are three categories of privilege.
+ *
+ * First, commands which are explicitly defined as privileged or which should
+- * only be used by the kernel driver. The parser generally rejects such
+- * commands, though it may allow some from the drm master process.
++ * only be used by the kernel driver. The parser rejects such commands
+ *
+ * Second, commands which access registers. To support correct/enhanced
+ * userspace functionality, particularly certain OpenGL extensions, the parser
+- * provides a whitelist of registers which userspace may safely access (for both
+- * normal and drm master processes).
++ * provides a whitelist of registers which userspace may safely access
+ *
+ * Third, commands which access privileged memory (i.e. GGTT, HWS page, etc).
+ * The parser always rejects such commands.
+@@ -81,9 +79,9 @@
+ * in the per-ring command tables.
+ *
+ * Other command table entries map fairly directly to high level categories
+- * mentioned above: rejected, master-only, register whitelist. The parser
+- * implements a number of checks, including the privileged memory checks, via a
+- * general bitmasking mechanism.
++ * mentioned above: rejected, register whitelist. The parser implements a number
++ * of checks, including the privileged memory checks, via a general bitmasking
++ * mechanism.
+ */
+
+ #define STD_MI_OPCODE_MASK 0xFF800000
+@@ -94,7 +92,7 @@
+ #define CMD(op, opm, f, lm, fl, ...) \
+ { \
+ .flags = (fl) | ((f) ? CMD_DESC_FIXED : 0), \
+- .cmd = { (op), (opm) }, \
++ .cmd = { (op) & (opm), (opm) }, \
+ .length = { (lm) }, \
+ __VA_ARGS__ \
+ }
+@@ -109,14 +107,13 @@
+ #define R CMD_DESC_REJECT
+ #define W CMD_DESC_REGISTER
+ #define B CMD_DESC_BITMASK
+-#define M CMD_DESC_MASTER
+
+ /* Command Mask Fixed Len Action
+ ---------------------------------------------------------- */
+-static const struct drm_i915_cmd_descriptor common_cmds[] = {
++static const struct drm_i915_cmd_descriptor gen7_common_cmds[] = {
+ CMD( MI_NOOP, SMI, F, 1, S ),
+ CMD( MI_USER_INTERRUPT, SMI, F, 1, R ),
+- CMD( MI_WAIT_FOR_EVENT, SMI, F, 1, M ),
++ CMD( MI_WAIT_FOR_EVENT, SMI, F, 1, R ),
+ CMD( MI_ARB_CHECK, SMI, F, 1, S ),
+ CMD( MI_REPORT_HEAD, SMI, F, 1, S ),
+ CMD( MI_SUSPEND_FLUSH, SMI, F, 1, S ),
+@@ -146,7 +143,7 @@ static const struct drm_i915_cmd_descriptor common_cmds[] = {
+ CMD( MI_BATCH_BUFFER_START, SMI, !F, 0xFF, S ),
+ };
+
+-static const struct drm_i915_cmd_descriptor render_cmds[] = {
++static const struct drm_i915_cmd_descriptor gen7_render_cmds[] = {
+ CMD( MI_FLUSH, SMI, F, 1, S ),
+ CMD( MI_ARB_ON_OFF, SMI, F, 1, R ),
+ CMD( MI_PREDICATE, SMI, F, 1, S ),
+@@ -213,7 +210,7 @@ static const struct drm_i915_cmd_descriptor hsw_render_cmds[] = {
+ CMD( MI_URB_ATOMIC_ALLOC, SMI, F, 1, S ),
+ CMD( MI_SET_APPID, SMI, F, 1, S ),
+ CMD( MI_RS_CONTEXT, SMI, F, 1, S ),
+- CMD( MI_LOAD_SCAN_LINES_INCL, SMI, !F, 0x3F, M ),
++ CMD( MI_LOAD_SCAN_LINES_INCL, SMI, !F, 0x3F, R ),
+ CMD( MI_LOAD_SCAN_LINES_EXCL, SMI, !F, 0x3F, R ),
+ CMD( MI_LOAD_REGISTER_REG, SMI, !F, 0xFF, R ),
+ CMD( MI_RS_STORE_DATA_IMM, SMI, !F, 0xFF, S ),
+@@ -229,7 +226,7 @@ static const struct drm_i915_cmd_descriptor hsw_render_cmds[] = {
+ CMD( GFX_OP_3DSTATE_BINDING_TABLE_EDIT_PS, S3D, !F, 0x1FF, S ),
+ };
+
+-static const struct drm_i915_cmd_descriptor video_cmds[] = {
++static const struct drm_i915_cmd_descriptor gen7_video_cmds[] = {
+ CMD( MI_ARB_ON_OFF, SMI, F, 1, R ),
+ CMD( MI_SET_APPID, SMI, F, 1, S ),
+ CMD( MI_STORE_DWORD_IMM, SMI, !F, 0xFF, B,
+@@ -273,7 +270,7 @@ static const struct drm_i915_cmd_descriptor video_cmds[] = {
+ CMD( MFX_WAIT, SMFX, F, 1, S ),
+ };
+
+-static const struct drm_i915_cmd_descriptor vecs_cmds[] = {
++static const struct drm_i915_cmd_descriptor gen7_vecs_cmds[] = {
+ CMD( MI_ARB_ON_OFF, SMI, F, 1, R ),
+ CMD( MI_SET_APPID, SMI, F, 1, S ),
+ CMD( MI_STORE_DWORD_IMM, SMI, !F, 0xFF, B,
+@@ -311,7 +308,7 @@ static const struct drm_i915_cmd_descriptor vecs_cmds[] = {
+ }}, ),
+ };
+
+-static const struct drm_i915_cmd_descriptor blt_cmds[] = {
++static const struct drm_i915_cmd_descriptor gen7_blt_cmds[] = {
+ CMD( MI_DISPLAY_FLIP, SMI, !F, 0xFF, R ),
+ CMD( MI_STORE_DWORD_IMM, SMI, !F, 0x3FF, B,
+ .bits = {{
+@@ -345,10 +342,62 @@ static const struct drm_i915_cmd_descriptor blt_cmds[] = {
+ };
+
+ static const struct drm_i915_cmd_descriptor hsw_blt_cmds[] = {
+- CMD( MI_LOAD_SCAN_LINES_INCL, SMI, !F, 0x3F, M ),
++ CMD( MI_LOAD_SCAN_LINES_INCL, SMI, !F, 0x3F, R ),
+ CMD( MI_LOAD_SCAN_LINES_EXCL, SMI, !F, 0x3F, R ),
+ };
+
++/*
++ * For Gen9 we can still rely on the h/w to enforce cmd security, and only
++ * need to re-enforce the register access checks. We therefore only need to
++ * teach the cmdparser how to find the end of each command, and identify
++ * register accesses. The table doesn't need to reject any commands, and so
++ * the only commands listed here are:
++ * 1) Those that touch registers
++ * 2) Those that do not have the default 8-bit length
++ *
++ * Note that the default MI length mask chosen for this table is 0xFF, not
++ * the 0x3F used on older devices. This is because the vast majority of MI
++ * cmds on Gen9 use a standard 8-bit Length field.
++ * All the Gen9 blitter instructions are standard 0xFF length mask, and
++ * none allow access to non-general registers, so in fact no BLT cmds are
++ * included in the table at all.
++ *
++ */
++static const struct drm_i915_cmd_descriptor gen9_blt_cmds[] = {
++ CMD( MI_NOOP, SMI, F, 1, S ),
++ CMD( MI_USER_INTERRUPT, SMI, F, 1, S ),
++ CMD( MI_WAIT_FOR_EVENT, SMI, F, 1, S ),
++ CMD( MI_FLUSH, SMI, F, 1, S ),
++ CMD( MI_ARB_CHECK, SMI, F, 1, S ),
++ CMD( MI_REPORT_HEAD, SMI, F, 1, S ),
++ CMD( MI_ARB_ON_OFF, SMI, F, 1, S ),
++ CMD( MI_SUSPEND_FLUSH, SMI, F, 1, S ),
++ CMD( MI_LOAD_SCAN_LINES_INCL, SMI, !F, 0x3F, S ),
++ CMD( MI_LOAD_SCAN_LINES_EXCL, SMI, !F, 0x3F, S ),
++ CMD( MI_STORE_DWORD_IMM, SMI, !F, 0x3FF, S ),
++ CMD( MI_LOAD_REGISTER_IMM(1), SMI, !F, 0xFF, W,
++ .reg = { .offset = 1, .mask = 0x007FFFFC, .step = 2 } ),
++ CMD( MI_UPDATE_GTT, SMI, !F, 0x3FF, S ),
++ CMD( MI_STORE_REGISTER_MEM_GEN8, SMI, F, 4, W,
++ .reg = { .offset = 1, .mask = 0x007FFFFC } ),
++ CMD( MI_FLUSH_DW, SMI, !F, 0x3F, S ),
++ CMD( MI_LOAD_REGISTER_MEM_GEN8, SMI, F, 4, W,
++ .reg = { .offset = 1, .mask = 0x007FFFFC } ),
++ CMD( MI_LOAD_REGISTER_REG, SMI, !F, 0xFF, W,
++ .reg = { .offset = 1, .mask = 0x007FFFFC, .step = 1 } ),
++
++ /*
++ * We allow BB_START but apply further checks. We just sanitize the
++ * basic fields here.
++ */
++ CMD( MI_BATCH_BUFFER_START_GEN8, SMI, !F, 0xFF, B,
++ .bits = {{
++ .offset = 0,
++ .mask = ~SMI,
++ .expected = (MI_BATCH_PPGTT_HSW | 1),
++ }}, ),
++};
++
+ #undef CMD
+ #undef SMI
+ #undef S3D
+@@ -359,40 +408,44 @@ static const struct drm_i915_cmd_descriptor hsw_blt_cmds[] = {
+ #undef R
+ #undef W
+ #undef B
+-#undef M
+
+-static const struct drm_i915_cmd_table gen7_render_cmds[] = {
+- { common_cmds, ARRAY_SIZE(common_cmds) },
+- { render_cmds, ARRAY_SIZE(render_cmds) },
++static const struct drm_i915_cmd_table gen7_render_cmd_table[] = {
++ { gen7_common_cmds, ARRAY_SIZE(gen7_common_cmds) },
++ { gen7_render_cmds, ARRAY_SIZE(gen7_render_cmds) },
+ };
+
+-static const struct drm_i915_cmd_table hsw_render_ring_cmds[] = {
+- { common_cmds, ARRAY_SIZE(common_cmds) },
+- { render_cmds, ARRAY_SIZE(render_cmds) },
++static const struct drm_i915_cmd_table hsw_render_ring_cmd_table[] = {
++ { gen7_common_cmds, ARRAY_SIZE(gen7_common_cmds) },
++ { gen7_render_cmds, ARRAY_SIZE(gen7_render_cmds) },
+ { hsw_render_cmds, ARRAY_SIZE(hsw_render_cmds) },
+ };
+
+-static const struct drm_i915_cmd_table gen7_video_cmds[] = {
+- { common_cmds, ARRAY_SIZE(common_cmds) },
+- { video_cmds, ARRAY_SIZE(video_cmds) },
++static const struct drm_i915_cmd_table gen7_video_cmd_table[] = {
++ { gen7_common_cmds, ARRAY_SIZE(gen7_common_cmds) },
++ { gen7_video_cmds, ARRAY_SIZE(gen7_video_cmds) },
+ };
+
+-static const struct drm_i915_cmd_table hsw_vebox_cmds[] = {
+- { common_cmds, ARRAY_SIZE(common_cmds) },
+- { vecs_cmds, ARRAY_SIZE(vecs_cmds) },
++static const struct drm_i915_cmd_table hsw_vebox_cmd_table[] = {
++ { gen7_common_cmds, ARRAY_SIZE(gen7_common_cmds) },
++ { gen7_vecs_cmds, ARRAY_SIZE(gen7_vecs_cmds) },
+ };
+
+-static const struct drm_i915_cmd_table gen7_blt_cmds[] = {
+- { common_cmds, ARRAY_SIZE(common_cmds) },
+- { blt_cmds, ARRAY_SIZE(blt_cmds) },
++static const struct drm_i915_cmd_table gen7_blt_cmd_table[] = {
++ { gen7_common_cmds, ARRAY_SIZE(gen7_common_cmds) },
++ { gen7_blt_cmds, ARRAY_SIZE(gen7_blt_cmds) },
+ };
+
+-static const struct drm_i915_cmd_table hsw_blt_ring_cmds[] = {
+- { common_cmds, ARRAY_SIZE(common_cmds) },
+- { blt_cmds, ARRAY_SIZE(blt_cmds) },
++static const struct drm_i915_cmd_table hsw_blt_ring_cmd_table[] = {
++ { gen7_common_cmds, ARRAY_SIZE(gen7_common_cmds) },
++ { gen7_blt_cmds, ARRAY_SIZE(gen7_blt_cmds) },
+ { hsw_blt_cmds, ARRAY_SIZE(hsw_blt_cmds) },
+ };
+
++static const struct drm_i915_cmd_table gen9_blt_cmd_table[] = {
++ { gen9_blt_cmds, ARRAY_SIZE(gen9_blt_cmds) },
++};
++
++
+ /*
+ * Register whitelists, sorted by increasing register offset.
+ */
+@@ -426,6 +479,10 @@ struct drm_i915_reg_descriptor {
+ #define REG64(addr) \
+ REG32(addr), REG32(addr + sizeof(u32))
+
++#define REG64_IDX(_reg, idx) \
++ { .addr = _reg(idx) }, \
++ { .addr = _reg ## _UDW(idx) }
++
+ static const struct drm_i915_reg_descriptor gen7_render_regs[] = {
+ REG64(GPGPU_THREADS_DISPATCHED),
+ REG64(HS_INVOCATION_COUNT),
+@@ -479,17 +536,27 @@ static const struct drm_i915_reg_descriptor gen7_blt_regs[] = {
+ REG32(BCS_SWCTRL),
+ };
+
+-static const struct drm_i915_reg_descriptor ivb_master_regs[] = {
+- REG32(FORCEWAKE_MT),
+- REG32(DERRMR),
+- REG32(GEN7_PIPE_DE_LOAD_SL(PIPE_A)),
+- REG32(GEN7_PIPE_DE_LOAD_SL(PIPE_B)),
+- REG32(GEN7_PIPE_DE_LOAD_SL(PIPE_C)),
+-};
+-
+-static const struct drm_i915_reg_descriptor hsw_master_regs[] = {
+- REG32(FORCEWAKE_MT),
+- REG32(DERRMR),
++static const struct drm_i915_reg_descriptor gen9_blt_regs[] = {
++ REG64_IDX(RING_TIMESTAMP, RENDER_RING_BASE),
++ REG64_IDX(RING_TIMESTAMP, BSD_RING_BASE),
++ REG32(BCS_SWCTRL),
++ REG64_IDX(RING_TIMESTAMP, BLT_RING_BASE),
++ REG64_IDX(BCS_GPR, 0),
++ REG64_IDX(BCS_GPR, 1),
++ REG64_IDX(BCS_GPR, 2),
++ REG64_IDX(BCS_GPR, 3),
++ REG64_IDX(BCS_GPR, 4),
++ REG64_IDX(BCS_GPR, 5),
++ REG64_IDX(BCS_GPR, 6),
++ REG64_IDX(BCS_GPR, 7),
++ REG64_IDX(BCS_GPR, 8),
++ REG64_IDX(BCS_GPR, 9),
++ REG64_IDX(BCS_GPR, 10),
++ REG64_IDX(BCS_GPR, 11),
++ REG64_IDX(BCS_GPR, 12),
++ REG64_IDX(BCS_GPR, 13),
++ REG64_IDX(BCS_GPR, 14),
++ REG64_IDX(BCS_GPR, 15),
+ };
+
+ #undef REG64
+@@ -550,6 +617,17 @@ static u32 gen7_blt_get_cmd_length_mask(u32 cmd_header)
+ return 0;
+ }
+
++static u32 gen9_blt_get_cmd_length_mask(u32 cmd_header)
++{
++ u32 client = (cmd_header & INSTR_CLIENT_MASK) >> INSTR_CLIENT_SHIFT;
++
++ if (client == INSTR_MI_CLIENT || client == INSTR_BC_CLIENT)
++ return 0xFF;
++
++ DRM_DEBUG_DRIVER("CMD: Abnormal blt cmd length! 0x%08X\n", cmd_header);
++ return 0;
++}
++
+ static bool validate_cmds_sorted(struct intel_engine_cs *ring,
+ const struct drm_i915_cmd_table *cmd_tables,
+ int cmd_table_count)
+@@ -608,9 +686,7 @@ static bool check_sorted(int ring_id,
+
+ static bool validate_regs_sorted(struct intel_engine_cs *ring)
+ {
+- return check_sorted(ring->id, ring->reg_table, ring->reg_count) &&
+- check_sorted(ring->id, ring->master_reg_table,
+- ring->master_reg_count);
++ return check_sorted(ring->id, ring->reg_table, ring->reg_count);
+ }
+
+ struct cmd_node {
+@@ -691,63 +767,61 @@ int i915_cmd_parser_init_ring(struct intel_engine_cs *ring)
+ int cmd_table_count;
+ int ret;
+
+- if (!IS_GEN7(ring->dev))
++ if (!IS_GEN7(ring->dev) && !(IS_GEN9(ring->dev) && ring->id == BCS))
+ return 0;
+
+ switch (ring->id) {
+ case RCS:
+ if (IS_HASWELL(ring->dev)) {
+- cmd_tables = hsw_render_ring_cmds;
++ cmd_tables = hsw_render_ring_cmd_table;
+ cmd_table_count =
+- ARRAY_SIZE(hsw_render_ring_cmds);
++ ARRAY_SIZE(hsw_render_ring_cmd_table);
+ } else {
+- cmd_tables = gen7_render_cmds;
+- cmd_table_count = ARRAY_SIZE(gen7_render_cmds);
++ cmd_tables = gen7_render_cmd_table;
++ cmd_table_count = ARRAY_SIZE(gen7_render_cmd_table);
+ }
+
+ ring->reg_table = gen7_render_regs;
+ ring->reg_count = ARRAY_SIZE(gen7_render_regs);
+
+- if (IS_HASWELL(ring->dev)) {
+- ring->master_reg_table = hsw_master_regs;
+- ring->master_reg_count = ARRAY_SIZE(hsw_master_regs);
+- } else {
+- ring->master_reg_table = ivb_master_regs;
+- ring->master_reg_count = ARRAY_SIZE(ivb_master_regs);
+- }
+-
+ ring->get_cmd_length_mask = gen7_render_get_cmd_length_mask;
+ break;
+ case VCS:
+- cmd_tables = gen7_video_cmds;
+- cmd_table_count = ARRAY_SIZE(gen7_video_cmds);
++ cmd_tables = gen7_video_cmd_table;
++ cmd_table_count = ARRAY_SIZE(gen7_video_cmd_table);
+ ring->get_cmd_length_mask = gen7_bsd_get_cmd_length_mask;
+ break;
+ case BCS:
+- if (IS_HASWELL(ring->dev)) {
+- cmd_tables = hsw_blt_ring_cmds;
+- cmd_table_count = ARRAY_SIZE(hsw_blt_ring_cmds);
++ ring->get_cmd_length_mask = gen7_blt_get_cmd_length_mask;
++ if (IS_GEN9(ring->dev)) {
++ cmd_tables = gen9_blt_cmd_table;
++ cmd_table_count = ARRAY_SIZE(gen9_blt_cmd_table);
++ ring->get_cmd_length_mask =
++ gen9_blt_get_cmd_length_mask;
++
++ /* BCS Engine unsafe without parser */
++ ring->requires_cmd_parser = 1;
++ }
++ else if (IS_HASWELL(ring->dev)) {
++ cmd_tables = hsw_blt_ring_cmd_table;
++ cmd_table_count = ARRAY_SIZE(hsw_blt_ring_cmd_table);
+ } else {
+- cmd_tables = gen7_blt_cmds;
+- cmd_table_count = ARRAY_SIZE(gen7_blt_cmds);
++ cmd_tables = gen7_blt_cmd_table;
++ cmd_table_count = ARRAY_SIZE(gen7_blt_cmd_table);
+ }
+
+- ring->reg_table = gen7_blt_regs;
+- ring->reg_count = ARRAY_SIZE(gen7_blt_regs);
+-
+- if (IS_HASWELL(ring->dev)) {
+- ring->master_reg_table = hsw_master_regs;
+- ring->master_reg_count = ARRAY_SIZE(hsw_master_regs);
++ if (IS_GEN9(ring->dev)) {
++ ring->reg_table = gen9_blt_regs;
++ ring->reg_count = ARRAY_SIZE(gen9_blt_regs);
+ } else {
+- ring->master_reg_table = ivb_master_regs;
+- ring->master_reg_count = ARRAY_SIZE(ivb_master_regs);
++ ring->reg_table = gen7_blt_regs;
++ ring->reg_count = ARRAY_SIZE(gen7_blt_regs);
+ }
+
+- ring->get_cmd_length_mask = gen7_blt_get_cmd_length_mask;
+ break;
+ case VECS:
+- cmd_tables = hsw_vebox_cmds;
+- cmd_table_count = ARRAY_SIZE(hsw_vebox_cmds);
++ cmd_tables = hsw_vebox_cmd_table;
++ cmd_table_count = ARRAY_SIZE(hsw_vebox_cmd_table);
+ /* VECS can use the same length_mask function as VCS */
+ ring->get_cmd_length_mask = gen7_bsd_get_cmd_length_mask;
+ break;
+@@ -769,7 +843,7 @@ int i915_cmd_parser_init_ring(struct intel_engine_cs *ring)
+ return ret;
+ }
+
+- ring->needs_cmd_parser = true;
++ ring->using_cmd_parser = true;
+
+ return 0;
+ }
+@@ -783,7 +857,7 @@ int i915_cmd_parser_init_ring(struct intel_engine_cs *ring)
+ */
+ void i915_cmd_parser_fini_ring(struct intel_engine_cs *ring)
+ {
+- if (!ring->needs_cmd_parser)
++ if (!ring->using_cmd_parser)
+ return;
+
+ fini_hash_table(ring);
+@@ -949,30 +1023,9 @@ unpin_src:
+ return ret ? ERR_PTR(ret) : dst;
+ }
+
+-/**
+- * i915_needs_cmd_parser() - should a given ring use software command parsing?
+- * @ring: the ring in question
+- *
+- * Only certain platforms require software batch buffer command parsing, and
+- * only when enabled via module parameter.
+- *
+- * Return: true if the ring requires software command parsing
+- */
+-bool i915_needs_cmd_parser(struct intel_engine_cs *ring)
+-{
+- if (!ring->needs_cmd_parser)
+- return false;
+-
+- if (!USES_PPGTT(ring->dev))
+- return false;
+-
+- return (i915.enable_cmd_parser == 1);
+-}
+-
+-static bool check_cmd(const struct intel_engine_cs *ring,
++static int check_cmd(const struct intel_engine_cs *ring,
+ const struct drm_i915_cmd_descriptor *desc,
+ const u32 *cmd, u32 length,
+- const bool is_master,
+ bool *oacontrol_set)
+ {
+ if (desc->flags & CMD_DESC_REJECT) {
+@@ -980,12 +1033,6 @@ static bool check_cmd(const struct intel_engine_cs *ring,
+ return false;
+ }
+
+- if ((desc->flags & CMD_DESC_MASTER) && !is_master) {
+- DRM_DEBUG_DRIVER("CMD: Rejected master-only command: 0x%08X\n",
+- *cmd);
+- return false;
+- }
+-
+ if (desc->flags & CMD_DESC_REGISTER) {
+ /*
+ * Get the distance between individual register offset
+@@ -1002,11 +1049,6 @@ static bool check_cmd(const struct intel_engine_cs *ring,
+ find_reg(ring->reg_table, ring->reg_count,
+ reg_addr);
+
+- if (!reg && is_master)
+- reg = find_reg(ring->master_reg_table,
+- ring->master_reg_count,
+- reg_addr);
+-
+ if (!reg) {
+ DRM_DEBUG_DRIVER("CMD: Rejected register 0x%08X in command: 0x%08X (ring=%d)\n",
+ reg_addr, *cmd, ring->id);
+@@ -1091,16 +1133,113 @@ static bool check_cmd(const struct intel_engine_cs *ring,
+ return true;
+ }
+
++static int check_bbstart(struct intel_context *ctx,
++ u32 *cmd, u64 offset, u32 length,
++ u32 batch_len,
++ u64 batch_start,
++ u64 shadow_batch_start)
++{
++
++ u64 jump_offset, jump_target;
++ u32 target_cmd_offset, target_cmd_index;
++
++ /* For igt compatibility on older platforms */
++ if (CMDPARSER_USES_GGTT(ctx->i915)) {
++ DRM_DEBUG("CMD: Rejecting BB_START for ggtt based submission\n");
++ return -EACCES;
++ }
++
++ if (length != 3) {
++ DRM_DEBUG("CMD: Recursive BB_START with bad length(%u)\n",
++ length);
++ return -EINVAL;
++ }
++
++ jump_target = *(u64*)(cmd+1);
++ jump_offset = jump_target - batch_start;
++
++ /*
++ * Any underflow of jump_target is guaranteed to be outside the range
++ * of a u32, so >= test catches both too large and too small
++ */
++ if (jump_offset >= batch_len) {
++ DRM_DEBUG("CMD: BB_START to 0x%llx jumps out of BB\n",
++ jump_target);
++ return -EINVAL;
++ }
++
++ /*
++ * This cannot overflow a u32 because we already checked jump_offset
++ * is within the BB, and the batch_len is a u32
++ */
++ target_cmd_offset = lower_32_bits(jump_offset);
++ target_cmd_index = target_cmd_offset / sizeof(u32);
++
++ *(u64*)(cmd + 1) = shadow_batch_start + target_cmd_offset;
++
++ if (target_cmd_index == offset)
++ return 0;
++
++ if (ctx->jump_whitelist_cmds <= target_cmd_index) {
++ DRM_DEBUG("CMD: Rejecting BB_START - truncated whitelist array\n");
++ return -EINVAL;
++ } else if (!test_bit(target_cmd_index, ctx->jump_whitelist)) {
++ DRM_DEBUG("CMD: BB_START to 0x%llx not a previously executed cmd\n",
++ jump_target);
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++static void init_whitelist(struct intel_context *ctx, u32 batch_len)
++{
++ const u32 batch_cmds = DIV_ROUND_UP(batch_len, sizeof(u32));
++ const u32 exact_size = BITS_TO_LONGS(batch_cmds);
++ u32 next_size = BITS_TO_LONGS(roundup_pow_of_two(batch_cmds));
++ unsigned long *next_whitelist;
++
++ if (CMDPARSER_USES_GGTT(ctx->i915))
++ return;
++
++ if (batch_cmds <= ctx->jump_whitelist_cmds) {
++ bitmap_zero(ctx->jump_whitelist, batch_cmds);
++ return;
++ }
++
++again:
++ next_whitelist = kcalloc(next_size, sizeof(long), GFP_KERNEL);
++ if (next_whitelist) {
++ kfree(ctx->jump_whitelist);
++ ctx->jump_whitelist = next_whitelist;
++ ctx->jump_whitelist_cmds =
++ next_size * BITS_PER_BYTE * sizeof(long);
++ return;
++ }
++
++ if (next_size > exact_size) {
++ next_size = exact_size;
++ goto again;
++ }
++
++ DRM_DEBUG("CMD: Failed to extend whitelist. BB_START may be disallowed\n");
++ bitmap_zero(ctx->jump_whitelist, ctx->jump_whitelist_cmds);
++
++ return;
++}
++
+ #define LENGTH_BIAS 2
+
+ /**
+ * i915_parse_cmds() - parse a submitted batch buffer for privilege violations
++ * @ctx: the context in which the batch is to execute
+ * @ring: the ring on which the batch is to execute
+ * @batch_obj: the batch buffer in question
+- * @shadow_batch_obj: copy of the batch buffer in question
++ * @user_batch_start: Canonical base address of original user batch
+ * @batch_start_offset: byte offset in the batch at which execution starts
+ * @batch_len: length of the commands in batch_obj
+- * @is_master: is the submitting process the drm master?
++ * @shadow_batch_obj: copy of the batch buffer in question
++ * @shadow_batch_start: Canonical base address of shadow_batch_obj
+ *
+ * Parses the specified batch buffer looking for privilege violations as
+ * described in the overview.
+@@ -1108,14 +1247,16 @@ static bool check_cmd(const struct intel_engine_cs *ring,
+ * Return: non-zero if the parser finds violations or otherwise fails; -EACCES
+ * if the batch appears legal but should use hardware parsing
+ */
+-int i915_parse_cmds(struct intel_engine_cs *ring,
++int i915_parse_cmds(struct intel_context *ctx,
++ struct intel_engine_cs *ring,
+ struct drm_i915_gem_object *batch_obj,
+- struct drm_i915_gem_object *shadow_batch_obj,
++ u64 user_batch_start,
+ u32 batch_start_offset,
+ u32 batch_len,
+- bool is_master)
++ struct drm_i915_gem_object *shadow_batch_obj,
++ u64 shadow_batch_start)
+ {
+- u32 *cmd, *batch_base, *batch_end;
++ u32 *cmd, *batch_base, *batch_end, offset = 0;
+ struct drm_i915_cmd_descriptor default_desc = { 0 };
+ bool oacontrol_set = false; /* OACONTROL tracking. See check_cmd() */
+ int ret = 0;
+@@ -1127,6 +1268,8 @@ int i915_parse_cmds(struct intel_engine_cs *ring,
+ return PTR_ERR(batch_base);
+ }
+
++ init_whitelist(ctx, batch_len);
++
+ /*
+ * We use the batch length as size because the shadow object is as
+ * large or larger and copy_batch() will write MI_NOPs to the extra
+@@ -1150,16 +1293,6 @@ int i915_parse_cmds(struct intel_engine_cs *ring,
+ break;
+ }
+
+- /*
+- * If the batch buffer contains a chained batch, return an
+- * error that tells the caller to abort and dispatch the
+- * workload as a non-secure batch.
+- */
+- if (desc->cmd.value == MI_BATCH_BUFFER_START) {
+- ret = -EACCES;
+- break;
+- }
+-
+ if (desc->flags & CMD_DESC_FIXED)
+ length = desc->length.fixed;
+ else
+@@ -1174,13 +1307,23 @@ int i915_parse_cmds(struct intel_engine_cs *ring,
+ break;
+ }
+
+- if (!check_cmd(ring, desc, cmd, length, is_master,
+- &oacontrol_set)) {
+- ret = -EINVAL;
++ if (!check_cmd(ring, desc, cmd, length, &oacontrol_set)) {
++ ret = CMDPARSER_USES_GGTT(ring->dev) ? -EINVAL : -EACCES;
+ break;
+ }
+
++ if (desc->cmd.value == MI_BATCH_BUFFER_START) {
++ ret = check_bbstart(ctx, cmd, offset, length,
++ batch_len, user_batch_start,
++ shadow_batch_start);
++ break;
++ }
++
++ if (ctx->jump_whitelist_cmds > offset)
++ set_bit(offset, ctx->jump_whitelist);
++
+ cmd += length;
++ offset += length;
+ }
+
+ if (oacontrol_set) {
+@@ -1206,7 +1349,7 @@ int i915_parse_cmds(struct intel_engine_cs *ring,
+ *
+ * Return: the current version number of the cmd parser
+ */
+-int i915_cmd_parser_get_version(void)
++int i915_cmd_parser_get_version(struct drm_i915_private *dev_priv)
+ {
+ /*
+ * Command parser version history
+@@ -1218,6 +1361,7 @@ int i915_cmd_parser_get_version(void)
+ * 3. Allow access to the GPGPU_THREADS_DISPATCHED register.
+ * 4. L3 atomic chicken bits of HSW_SCRATCH1 and HSW_ROW_CHICKEN3.
+ * 5. GPGPU dispatch compute indirect registers.
++ * 10. Gen9 only - Supports the new ppgtt based BLIT parser
+ */
+- return 5;
++ return CMDPARSER_USES_GGTT(dev_priv) ? 5 : 10;
+ }
+diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
+index 61fcb3b22297..7b61078c2330 100644
+--- a/drivers/gpu/drm/i915/i915_dma.c
++++ b/drivers/gpu/drm/i915/i915_dma.c
+@@ -133,7 +133,7 @@ static int i915_getparam(struct drm_device *dev, void *data,
+ value = 1;
+ break;
+ case I915_PARAM_HAS_SECURE_BATCHES:
+- value = capable(CAP_SYS_ADMIN);
++ value = HAS_SECURE_BATCHES(dev_priv) && capable(CAP_SYS_ADMIN);
+ break;
+ case I915_PARAM_HAS_PINNED_BATCHES:
+ value = 1;
+@@ -145,7 +145,7 @@ static int i915_getparam(struct drm_device *dev, void *data,
+ value = 1;
+ break;
+ case I915_PARAM_CMD_PARSER_VERSION:
+- value = i915_cmd_parser_get_version();
++ value = i915_cmd_parser_get_version(dev_priv);
+ break;
+ case I915_PARAM_HAS_COHERENT_PHYS_GTT:
+ value = 1;
+diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
+index a6ad938f44a6..697b2499c7a1 100644
+--- a/drivers/gpu/drm/i915/i915_drv.c
++++ b/drivers/gpu/drm/i915/i915_drv.c
+@@ -698,6 +698,8 @@ static int i915_drm_suspend_late(struct drm_device *drm_dev, bool hibernation)
+ return ret;
+ }
+
++ i915_rc6_ctx_wa_suspend(dev_priv);
++
+ pci_disable_device(drm_dev->pdev);
+ /*
+ * During hibernation on some platforms the BIOS may try to access
+@@ -849,6 +851,8 @@ static int i915_drm_resume_early(struct drm_device *dev)
+ intel_uncore_sanitize(dev);
+ intel_power_domains_init_hw(dev_priv);
+
++ i915_rc6_ctx_wa_resume(dev_priv);
++
+ return ret;
+ }
+
+diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
+index 5044f2257e89..adbbcaf14af6 100644
+--- a/drivers/gpu/drm/i915/i915_drv.h
++++ b/drivers/gpu/drm/i915/i915_drv.h
+@@ -891,6 +891,12 @@ struct intel_context {
+ int pin_count;
+ } engine[I915_NUM_RINGS];
+
++ /* jump_whitelist: Bit array for tracking cmds during cmdparsing */
++ unsigned long *jump_whitelist;
++
++ /* jump_whitelist_cmds: No of cmd slots available */
++ uint32_t jump_whitelist_cmds;
++
+ struct list_head link;
+ };
+
+@@ -1153,6 +1159,7 @@ struct intel_gen6_power_mgmt {
+ bool client_boost;
+
+ bool enabled;
++ bool ctx_corrupted;
+ struct delayed_work delayed_resume_work;
+ unsigned boosts;
+
+@@ -2539,6 +2546,9 @@ struct drm_i915_cmd_table {
+ #define HAS_BSD2(dev) (INTEL_INFO(dev)->ring_mask & BSD2_RING)
+ #define HAS_BLT(dev) (INTEL_INFO(dev)->ring_mask & BLT_RING)
+ #define HAS_VEBOX(dev) (INTEL_INFO(dev)->ring_mask & VEBOX_RING)
++
++#define HAS_SECURE_BATCHES(dev_priv) (INTEL_INFO(dev_priv)->gen < 6)
++
+ #define HAS_LLC(dev) (INTEL_INFO(dev)->has_llc)
+ #define HAS_WT(dev) ((IS_HASWELL(dev) || IS_BROADWELL(dev)) && \
+ __I915__(dev)->ellc_size)
+@@ -2553,8 +2563,18 @@ struct drm_i915_cmd_table {
+ #define HAS_OVERLAY(dev) (INTEL_INFO(dev)->has_overlay)
+ #define OVERLAY_NEEDS_PHYSICAL(dev) (INTEL_INFO(dev)->overlay_needs_physical)
+
++/*
++ * The Gen7 cmdparser copies the scanned buffer to the ggtt for execution
++ * All later gens can run the final buffer from the ppgtt
++ */
++#define CMDPARSER_USES_GGTT(dev_priv) IS_GEN7(dev_priv)
++
+ /* Early gen2 have a totally busted CS tlb and require pinned batches. */
+ #define HAS_BROKEN_CS_TLB(dev) (IS_I830(dev) || IS_845G(dev))
++
++#define NEEDS_RC6_CTX_CORRUPTION_WA(dev) \
++ (IS_BROADWELL(dev) || INTEL_INFO(dev)->gen == 9)
++
+ /*
+ * dp aux and gmbus irq on gen4 seems to be able to generate legacy interrupts
+ * even when in MSI mode. This results in spurious interrupt warnings if the
+@@ -3276,16 +3296,19 @@ void i915_get_extra_instdone(struct drm_device *dev, uint32_t *instdone);
+ const char *i915_cache_level_str(struct drm_i915_private *i915, int type);
+
+ /* i915_cmd_parser.c */
+-int i915_cmd_parser_get_version(void);
++int i915_cmd_parser_get_version(struct drm_i915_private *dev_priv);
+ int i915_cmd_parser_init_ring(struct intel_engine_cs *ring);
+ void i915_cmd_parser_fini_ring(struct intel_engine_cs *ring);
+ bool i915_needs_cmd_parser(struct intel_engine_cs *ring);
+-int i915_parse_cmds(struct intel_engine_cs *ring,
++int i915_parse_cmds(struct intel_context *cxt,
++ struct intel_engine_cs *ring,
+ struct drm_i915_gem_object *batch_obj,
+- struct drm_i915_gem_object *shadow_batch_obj,
++ u64 user_batch_start,
+ u32 batch_start_offset,
+ u32 batch_len,
+- bool is_master);
++ struct drm_i915_gem_object *shadow_batch_obj,
++ u64 shadow_batch_start);
++
+
+ /* i915_suspend.c */
+ extern int i915_save_state(struct drm_device *dev);
+diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
+index 0433d25f9d23..20fb0ee1df4f 100644
+--- a/drivers/gpu/drm/i915/i915_gem_context.c
++++ b/drivers/gpu/drm/i915/i915_gem_context.c
+@@ -157,6 +157,8 @@ void i915_gem_context_free(struct kref *ctx_ref)
+ if (i915.enable_execlists)
+ intel_lr_context_free(ctx);
+
++ kfree(ctx->jump_whitelist);
++
+ /*
+ * This context is going away and we need to remove all VMAs still
+ * around. This is to handle imported shared objects for which
+@@ -246,6 +248,9 @@ __create_hw_context(struct drm_device *dev,
+
+ ctx->hang_stats.ban_period_seconds = DRM_I915_CTX_BAN_PERIOD;
+
++ ctx->jump_whitelist = NULL;
++ ctx->jump_whitelist_cmds = 0;
++
+ return ctx;
+
+ err_out:
+diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+index 6ed7d63a0688..c373c45ae3d3 100644
+--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
++++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+@@ -1123,17 +1123,52 @@ i915_reset_gen7_sol_offsets(struct drm_device *dev,
+ return 0;
+ }
+
++static struct i915_vma*
++shadow_batch_pin(struct drm_i915_gem_object *obj, struct i915_address_space *vm)
++{
++ struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
++ struct i915_address_space *pin_vm = vm;
++ u64 flags;
++ int ret;
++
++ /*
++ * PPGTT backed shadow buffers must be mapped RO, to prevent
++ * post-scan tampering
++ */
++ if (CMDPARSER_USES_GGTT(dev_priv)) {
++ flags = PIN_GLOBAL;
++ pin_vm = &dev_priv->gtt.base;
++ } else if (vm->has_read_only) {
++ flags = PIN_USER;
++ obj->gt_ro = 1;
++ } else {
++ DRM_DEBUG("Cannot prevent post-scan tampering without RO capable vm\n");
++ return ERR_PTR(-EINVAL);
++ }
++
++ ret = i915_gem_object_pin(obj, pin_vm, 0, flags);
++ if (ret)
++ return ERR_PTR(ret);
++ else
++ return i915_gem_obj_to_vma(obj, pin_vm);
++}
++
+ static struct drm_i915_gem_object*
+-i915_gem_execbuffer_parse(struct intel_engine_cs *ring,
++i915_gem_execbuffer_parse(struct intel_context *ctx,
++ struct intel_engine_cs *ring,
+ struct drm_i915_gem_exec_object2 *shadow_exec_entry,
+ struct eb_vmas *eb,
++ struct i915_address_space *vm,
+ struct drm_i915_gem_object *batch_obj,
+ u32 batch_start_offset,
+- u32 batch_len,
+- bool is_master)
++ u32 batch_len)
+ {
+ struct drm_i915_gem_object *shadow_batch_obj;
+ struct i915_vma *vma;
++ struct i915_vma *user_vma = list_entry(eb->vmas.prev,
++ typeof(*user_vma), exec_list);
++ u64 batch_start;
++ u64 shadow_batch_start;
+ int ret;
+
+ shadow_batch_obj = i915_gem_batch_pool_get(&ring->batch_pool,
+@@ -1141,24 +1176,34 @@ i915_gem_execbuffer_parse(struct intel_engine_cs *ring,
+ if (IS_ERR(shadow_batch_obj))
+ return shadow_batch_obj;
+
+- ret = i915_parse_cmds(ring,
++ vma = shadow_batch_pin(shadow_batch_obj, vm);
++ if (IS_ERR(vma)) {
++ ret = PTR_ERR(vma);
++ goto err;
++ }
++
++ batch_start = user_vma->node.start + batch_start_offset;
++
++ shadow_batch_start = vma->node.start;
++
++ ret = i915_parse_cmds(ctx,
++ ring,
+ batch_obj,
+- shadow_batch_obj,
++ batch_start,
+ batch_start_offset,
+ batch_len,
+- is_master);
+- if (ret)
+- goto err;
+-
+- ret = i915_gem_obj_ggtt_pin(shadow_batch_obj, 0, 0);
+- if (ret)
++ shadow_batch_obj,
++ shadow_batch_start);
++ if (ret) {
++ WARN_ON(vma->pin_count == 0);
++ vma->pin_count--;
+ goto err;
++ }
+
+ i915_gem_object_unpin_pages(shadow_batch_obj);
+
+ memset(shadow_exec_entry, 0, sizeof(*shadow_exec_entry));
+
+- vma = i915_gem_obj_to_ggtt(shadow_batch_obj);
+ vma->exec_entry = shadow_exec_entry;
+ vma->exec_entry->flags = __EXEC_OBJECT_HAS_PIN;
+ drm_gem_object_reference(&shadow_batch_obj->base);
+@@ -1170,7 +1215,14 @@ i915_gem_execbuffer_parse(struct intel_engine_cs *ring,
+
+ err:
+ i915_gem_object_unpin_pages(shadow_batch_obj);
+- if (ret == -EACCES) /* unhandled chained batch */
++
++ /*
++ * Unsafe GGTT-backed buffers can still be submitted safely
++ * as non-secure.
++ * For PPGTT backing however, we have no choice but to forcibly
++ * reject unsafe buffers
++ */
++ if (CMDPARSER_USES_GGTT(batch_obj->base.dev) && (ret == -EACCES))
+ return batch_obj;
+ else
+ return ERR_PTR(ret);
+@@ -1322,6 +1374,13 @@ eb_get_batch(struct eb_vmas *eb)
+ return vma->obj;
+ }
+
++static inline bool use_cmdparser(const struct intel_engine_cs *ring,
++ u32 batch_len)
++{
++ return ring->requires_cmd_parser ||
++ (ring->using_cmd_parser && batch_len && USES_PPGTT(ring->dev));
++}
++
+ static int
+ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
+ struct drm_file *file,
+@@ -1351,6 +1410,10 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
+
+ dispatch_flags = 0;
+ if (args->flags & I915_EXEC_SECURE) {
++ /* Return -EPERM to trigger fallback code on old binaries. */
++ if (!HAS_SECURE_BATCHES(dev_priv))
++ return -EPERM;
++
+ if (!file->is_master || !capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+@@ -1489,16 +1552,20 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
+ }
+
+ params->args_batch_start_offset = args->batch_start_offset;
+- if (i915_needs_cmd_parser(ring) && args->batch_len) {
++ if (use_cmdparser(ring, args->batch_len)) {
+ struct drm_i915_gem_object *parsed_batch_obj;
+
+- parsed_batch_obj = i915_gem_execbuffer_parse(ring,
++ u32 batch_off = args->batch_start_offset;
++ u32 batch_len = args->batch_len;
++ if (batch_len == 0)
++ batch_len = batch_obj->base.size - batch_off;
++
++ parsed_batch_obj = i915_gem_execbuffer_parse(ctx, ring,
+ &shadow_exec_entry,
+- eb,
++ eb, vm,
+ batch_obj,
+- args->batch_start_offset,
+- args->batch_len,
+- file->is_master);
++ batch_off,
++ batch_len);
+ if (IS_ERR(parsed_batch_obj)) {
+ ret = PTR_ERR(parsed_batch_obj);
+ goto err;
+@@ -1508,18 +1575,9 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
+ * parsed_batch_obj == batch_obj means batch not fully parsed:
+ * Accept, but don't promote to secure.
+ */
+-
+ if (parsed_batch_obj != batch_obj) {
+- /*
+- * Batch parsed and accepted:
+- *
+- * Set the DISPATCH_SECURE bit to remove the NON_SECURE
+- * bit from MI_BATCH_BUFFER_START commands issued in
+- * the dispatch_execbuffer implementations. We
+- * specifically don't want that set on batches the
+- * command parser has accepted.
+- */
+- dispatch_flags |= I915_DISPATCH_SECURE;
++ if (CMDPARSER_USES_GGTT(dev_priv))
++ dispatch_flags |= I915_DISPATCH_SECURE;
+ params->args_batch_start_offset = 0;
+ batch_obj = parsed_batch_obj;
+ }
+diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
+index b37fe0df743e..65a53ee398b8 100644
+--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
++++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
+@@ -119,7 +119,8 @@ static int sanitize_enable_ppgtt(struct drm_device *dev, int enable_ppgtt)
+ (enable_ppgtt == 0 || !has_aliasing_ppgtt))
+ return 0;
+
+- if (enable_ppgtt == 1)
++ /* Full PPGTT is required by the Gen9 cmdparser */
++ if (enable_ppgtt == 1 && INTEL_INFO(dev)->gen != 9)
+ return 1;
+
+ if (enable_ppgtt == 2 && has_full_ppgtt)
+@@ -152,7 +153,8 @@ static int ppgtt_bind_vma(struct i915_vma *vma,
+ {
+ u32 pte_flags = 0;
+
+- /* Currently applicable only to VLV */
++ /* Applicable to VLV, and gen8+ */
++ pte_flags = 0;
+ if (vma->obj->gt_ro)
+ pte_flags |= PTE_READ_ONLY;
+
+@@ -172,11 +174,14 @@ static void ppgtt_unbind_vma(struct i915_vma *vma)
+
+ static gen8_pte_t gen8_pte_encode(dma_addr_t addr,
+ enum i915_cache_level level,
+- bool valid)
++ bool valid, u32 flags)
+ {
+ gen8_pte_t pte = valid ? _PAGE_PRESENT | _PAGE_RW : 0;
+ pte |= addr;
+
++ if (unlikely(flags & PTE_READ_ONLY))
++ pte &= ~_PAGE_RW;
++
+ switch (level) {
+ case I915_CACHE_NONE:
+ pte |= PPAT_UNCACHED_INDEX;
+@@ -460,7 +465,7 @@ static void gen8_initialize_pt(struct i915_address_space *vm,
+ gen8_pte_t scratch_pte;
+
+ scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page),
+- I915_CACHE_LLC, true);
++ I915_CACHE_LLC, true, 0);
+
+ fill_px(vm->dev, pt, scratch_pte);
+ }
+@@ -757,8 +762,9 @@ static void gen8_ppgtt_clear_range(struct i915_address_space *vm,
+ {
+ struct i915_hw_ppgtt *ppgtt =
+ container_of(vm, struct i915_hw_ppgtt, base);
+- gen8_pte_t scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page),
+- I915_CACHE_LLC, use_scratch);
++ gen8_pte_t scratch_pte =
++ gen8_pte_encode(px_dma(vm->scratch_page),
++ I915_CACHE_LLC, use_scratch, 0);
+
+ if (!USES_FULL_48BIT_PPGTT(vm->dev)) {
+ gen8_ppgtt_clear_pte_range(vm, &ppgtt->pdp, start, length,
+@@ -779,7 +785,8 @@ gen8_ppgtt_insert_pte_entries(struct i915_address_space *vm,
+ struct i915_page_directory_pointer *pdp,
+ struct sg_page_iter *sg_iter,
+ uint64_t start,
+- enum i915_cache_level cache_level)
++ enum i915_cache_level cache_level,
++ u32 flags)
+ {
+ struct i915_hw_ppgtt *ppgtt =
+ container_of(vm, struct i915_hw_ppgtt, base);
+@@ -799,7 +806,7 @@ gen8_ppgtt_insert_pte_entries(struct i915_address_space *vm,
+
+ pt_vaddr[pte] =
+ gen8_pte_encode(sg_page_iter_dma_address(sg_iter),
+- cache_level, true);
++ cache_level, true, flags);
+ if (++pte == GEN8_PTES) {
+ kunmap_px(ppgtt, pt_vaddr);
+ pt_vaddr = NULL;
+@@ -820,7 +827,7 @@ static void gen8_ppgtt_insert_entries(struct i915_address_space *vm,
+ struct sg_table *pages,
+ uint64_t start,
+ enum i915_cache_level cache_level,
+- u32 unused)
++ u32 flags)
+ {
+ struct i915_hw_ppgtt *ppgtt =
+ container_of(vm, struct i915_hw_ppgtt, base);
+@@ -830,7 +837,7 @@ static void gen8_ppgtt_insert_entries(struct i915_address_space *vm,
+
+ if (!USES_FULL_48BIT_PPGTT(vm->dev)) {
+ gen8_ppgtt_insert_pte_entries(vm, &ppgtt->pdp, &sg_iter, start,
+- cache_level);
++ cache_level, flags);
+ } else {
+ struct i915_page_directory_pointer *pdp;
+ uint64_t templ4, pml4e;
+@@ -838,7 +845,7 @@ static void gen8_ppgtt_insert_entries(struct i915_address_space *vm,
+
+ gen8_for_each_pml4e(pdp, &ppgtt->pml4, start, length, templ4, pml4e) {
+ gen8_ppgtt_insert_pte_entries(vm, pdp, &sg_iter,
+- start, cache_level);
++ start, cache_level, flags);
+ }
+ }
+ }
+@@ -1447,7 +1454,7 @@ static void gen8_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m)
+ uint64_t start = ppgtt->base.start;
+ uint64_t length = ppgtt->base.total;
+ gen8_pte_t scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page),
+- I915_CACHE_LLC, true);
++ I915_CACHE_LLC, true, 0);
+
+ if (!USES_FULL_48BIT_PPGTT(vm->dev)) {
+ gen8_dump_pdp(&ppgtt->pdp, start, length, scratch_pte, m);
+@@ -1515,6 +1522,14 @@ static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
+ ppgtt->base.clear_range = gen8_ppgtt_clear_range;
+ ppgtt->base.unbind_vma = ppgtt_unbind_vma;
+ ppgtt->base.bind_vma = ppgtt_bind_vma;
++
++ /*
++ * From bdw, there is support for read-only pages in the PPGTT.
++ *
++ * XXX GVT is not honouring the lack of RW in the PTE bits.
++ */
++ ppgtt->base.has_read_only = !intel_vgpu_active(ppgtt->base.dev);
++
+ ppgtt->debug_dump = gen8_dump_ppgtt;
+
+ if (USES_FULL_48BIT_PPGTT(ppgtt->base.dev)) {
+@@ -2343,7 +2358,7 @@ static void gen8_set_pte(void __iomem *addr, gen8_pte_t pte)
+ static void gen8_ggtt_insert_entries(struct i915_address_space *vm,
+ struct sg_table *st,
+ uint64_t start,
+- enum i915_cache_level level, u32 unused)
++ enum i915_cache_level level, u32 flags)
+ {
+ struct drm_i915_private *dev_priv = vm->dev->dev_private;
+ unsigned first_entry = start >> PAGE_SHIFT;
+@@ -2357,7 +2372,7 @@ static void gen8_ggtt_insert_entries(struct i915_address_space *vm,
+ addr = sg_dma_address(sg_iter.sg) +
+ (sg_iter.sg_pgoffset << PAGE_SHIFT);
+ gen8_set_pte(>t_entries[i],
+- gen8_pte_encode(addr, level, true));
++ gen8_pte_encode(addr, level, true, flags));
+ i++;
+ }
+
+@@ -2370,7 +2385,7 @@ static void gen8_ggtt_insert_entries(struct i915_address_space *vm,
+ */
+ if (i != 0)
+ WARN_ON(readq(>t_entries[i-1])
+- != gen8_pte_encode(addr, level, true));
++ != gen8_pte_encode(addr, level, true, flags));
+
+ /* This next bit makes the above posting read even more important. We
+ * want to flush the TLBs only after we're certain all the PTE updates
+@@ -2444,7 +2459,7 @@ static void gen8_ggtt_clear_range(struct i915_address_space *vm,
+
+ scratch_pte = gen8_pte_encode(px_dma(vm->scratch_page),
+ I915_CACHE_LLC,
+- use_scratch);
++ use_scratch, 0);
+ for (i = 0; i < num_entries; i++)
+ gen8_set_pte(>t_base[i], scratch_pte);
+ readl(gtt_base);
+@@ -2510,7 +2525,8 @@ static int ggtt_bind_vma(struct i915_vma *vma,
+ if (ret)
+ return ret;
+
+- /* Currently applicable only to VLV */
++ /* Applicable to VLV (gen8+ do not support RO in the GGTT) */
++ pte_flags = 0;
+ if (obj->gt_ro)
+ pte_flags |= PTE_READ_ONLY;
+
+@@ -2653,6 +2669,9 @@ static int i915_gem_setup_global_gtt(struct drm_device *dev,
+ i915_address_space_init(ggtt_vm, dev_priv);
+ ggtt_vm->total += PAGE_SIZE;
+
++ /* Only VLV supports read-only GGTT mappings */
++ ggtt_vm->has_read_only = IS_VALLEYVIEW(dev_priv);
++
+ if (intel_vgpu_active(dev)) {
+ ret = intel_vgt_balloon(dev);
+ if (ret)
+diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h
+index a216397ead52..d36f2d77576a 100644
+--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
++++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
+@@ -307,6 +307,9 @@ struct i915_address_space {
+ */
+ struct list_head inactive_list;
+
++ /* Some systems support read-only mappings for GGTT and/or PPGTT */
++ bool has_read_only:1;
++
+ /* FIXME: Need a more generic return type */
+ gen6_pte_t (*pte_encode)(dma_addr_t addr,
+ enum i915_cache_level level,
+diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
+index cace154bbdc0..603d8cdfc5f1 100644
+--- a/drivers/gpu/drm/i915/i915_reg.h
++++ b/drivers/gpu/drm/i915/i915_reg.h
+@@ -170,6 +170,8 @@
+ #define ECOCHK_PPGTT_WT_HSW (0x2<<3)
+ #define ECOCHK_PPGTT_WB_HSW (0x3<<3)
+
++#define GEN8_RC6_CTX_INFO 0x8504
++
+ #define GAC_ECO_BITS 0x14090
+ #define ECOBITS_SNB_BIT (1<<13)
+ #define ECOBITS_PPGTT_CACHE64B (3<<8)
+@@ -511,6 +513,10 @@
+ */
+ #define BCS_SWCTRL 0x22200
+
++/* There are 16 GPR registers */
++#define BCS_GPR(n) (0x22600 + (n) * 8)
++#define BCS_GPR_UDW(n) (0x22600 + (n) * 8 + 4)
++
+ #define GPGPU_THREADS_DISPATCHED 0x2290
+ #define HS_INVOCATION_COUNT 0x2300
+ #define DS_INVOCATION_COUNT 0x2308
+@@ -1567,6 +1573,7 @@ enum skl_disp_power_wells {
+ #define RING_IMR(base) ((base)+0xa8)
+ #define RING_HWSTAM(base) ((base)+0x98)
+ #define RING_TIMESTAMP(base) ((base)+0x358)
++#define RING_TIMESTAMP_UDW(base) ((base) + 0x358 + 4)
+ #define TAIL_ADDR 0x001FFFF8
+ #define HEAD_WRAP_COUNT 0xFFE00000
+ #define HEAD_WRAP_ONE 0x00200000
+@@ -5704,6 +5711,10 @@ enum skl_disp_power_wells {
+ #define GAMMA_MODE_MODE_12BIT (2 << 0)
+ #define GAMMA_MODE_MODE_SPLIT (3 << 0)
+
++/* Display Internal Timeout Register */
++#define RM_TIMEOUT 0x42060
++#define MMIO_TIMEOUT_US(us) ((us) << 0)
++
+ /* interrupts */
+ #define DE_MASTER_IRQ_CONTROL (1 << 31)
+ #define DE_SPRITEB_FLIP_DONE (1 << 29)
+diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
+index 4f5d07bb3511..a9166ff48a26 100644
+--- a/drivers/gpu/drm/i915/intel_display.c
++++ b/drivers/gpu/drm/i915/intel_display.c
+@@ -10747,6 +10747,10 @@ void intel_mark_busy(struct drm_device *dev)
+ return;
+
+ intel_runtime_pm_get(dev_priv);
++
++ if (NEEDS_RC6_CTX_CORRUPTION_WA(dev_priv))
++ intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
++
+ i915_update_gfx_val(dev_priv);
+ if (INTEL_INFO(dev)->gen >= 6)
+ gen6_rps_busy(dev_priv);
+@@ -10765,6 +10769,11 @@ void intel_mark_idle(struct drm_device *dev)
+ if (INTEL_INFO(dev)->gen >= 6)
+ gen6_rps_idle(dev->dev_private);
+
++ if (NEEDS_RC6_CTX_CORRUPTION_WA(dev_priv)) {
++ i915_rc6_ctx_wa_check(dev_priv);
++ intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
++ }
++
+ intel_runtime_pm_put(dev_priv);
+ }
+
+diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
+index 722aa159cd28..78503e481313 100644
+--- a/drivers/gpu/drm/i915/intel_drv.h
++++ b/drivers/gpu/drm/i915/intel_drv.h
+@@ -1410,6 +1410,9 @@ void intel_enable_gt_powersave(struct drm_device *dev);
+ void intel_disable_gt_powersave(struct drm_device *dev);
+ void intel_suspend_gt_powersave(struct drm_device *dev);
+ void intel_reset_gt_powersave(struct drm_device *dev);
++bool i915_rc6_ctx_wa_check(struct drm_i915_private *i915);
++void i915_rc6_ctx_wa_suspend(struct drm_i915_private *i915);
++void i915_rc6_ctx_wa_resume(struct drm_i915_private *i915);
+ void gen6_update_ring_freq(struct drm_device *dev);
+ void gen6_rps_busy(struct drm_i915_private *dev_priv);
+ void gen6_rps_reset_ei(struct drm_i915_private *dev_priv);
+diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
+index fd4690ed93c0..81bd84f9156b 100644
+--- a/drivers/gpu/drm/i915/intel_pm.c
++++ b/drivers/gpu/drm/i915/intel_pm.c
+@@ -66,6 +66,14 @@ static void bxt_init_clock_gating(struct drm_device *dev)
+ */
+ I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) |
+ GEN8_HDCUNIT_CLOCK_GATE_DISABLE_HDCREQ);
++
++ /*
++ * Lower the display internal timeout.
++ * This is needed to avoid any hard hangs when DSI port PLL
++ * is off and a MMIO access is attempted by any privilege
++ * application, using batch buffers or any other means.
++ */
++ I915_WRITE(RM_TIMEOUT, MMIO_TIMEOUT_US(950));
+ }
+
+ static void i915_pineview_get_mem_freq(struct drm_device *dev)
+@@ -4591,30 +4599,42 @@ void intel_set_rps(struct drm_device *dev, u8 val)
+ gen6_set_rps(dev, val);
+ }
+
+-static void gen9_disable_rps(struct drm_device *dev)
++static void gen9_disable_rc6(struct drm_device *dev)
+ {
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ I915_WRITE(GEN6_RC_CONTROL, 0);
++}
++
++static void gen9_disable_rps(struct drm_device *dev)
++{
++ struct drm_i915_private *dev_priv = dev->dev_private;
++
+ I915_WRITE(GEN9_PG_ENABLE, 0);
+ }
+
+-static void gen6_disable_rps(struct drm_device *dev)
++static void gen6_disable_rc6(struct drm_device *dev)
+ {
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ I915_WRITE(GEN6_RC_CONTROL, 0);
++}
++
++static void gen6_disable_rps(struct drm_device *dev)
++{
++ struct drm_i915_private *dev_priv = dev->dev_private;
++
+ I915_WRITE(GEN6_RPNSWREQ, 1 << 31);
+ }
+
+-static void cherryview_disable_rps(struct drm_device *dev)
++static void cherryview_disable_rc6(struct drm_device *dev)
+ {
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ I915_WRITE(GEN6_RC_CONTROL, 0);
+ }
+
+-static void valleyview_disable_rps(struct drm_device *dev)
++static void valleyview_disable_rc6(struct drm_device *dev)
+ {
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+@@ -4818,7 +4838,8 @@ static void gen9_enable_rc6(struct drm_device *dev)
+ I915_WRITE(GEN9_RENDER_PG_IDLE_HYSTERESIS, 25);
+
+ /* 3a: Enable RC6 */
+- if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE)
++ if (!dev_priv->rps.ctx_corrupted &&
++ intel_enable_rc6(dev) & INTEL_RC6_ENABLE)
+ rc6_mask = GEN6_RC_CTL_RC6_ENABLE;
+ DRM_INFO("RC6 %s\n", (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ?
+ "on" : "off");
+@@ -4841,7 +4862,7 @@ static void gen9_enable_rc6(struct drm_device *dev)
+ * WaRsDisableCoarsePowerGating:skl,bxt - Render/Media PG need to be disabled with RC6.
+ */
+ if ((IS_BROXTON(dev) && (INTEL_REVID(dev) < BXT_REVID_B0)) ||
+- ((IS_SKL_GT3(dev) || IS_SKL_GT4(dev)) && (INTEL_REVID(dev) <= SKL_REVID_F0)))
++ INTEL_INFO(dev)->gen == 9)
+ I915_WRITE(GEN9_PG_ENABLE, 0);
+ else
+ I915_WRITE(GEN9_PG_ENABLE, (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ?
+@@ -4884,7 +4905,8 @@ static void gen8_enable_rps(struct drm_device *dev)
+ I915_WRITE(GEN6_RC6_THRESHOLD, 50000); /* 50/125ms per EI */
+
+ /* 3: Enable RC6 */
+- if (intel_enable_rc6(dev) & INTEL_RC6_ENABLE)
++ if (!dev_priv->rps.ctx_corrupted &&
++ intel_enable_rc6(dev) & INTEL_RC6_ENABLE)
+ rc6_mask = GEN6_RC_CTL_RC6_ENABLE;
+ intel_print_rc6_info(dev, rc6_mask);
+ if (IS_BROADWELL(dev))
+@@ -6128,10 +6150,101 @@ static void intel_init_emon(struct drm_device *dev)
+ dev_priv->ips.corr = (lcfuse & LCFUSE_HIV_MASK);
+ }
+
++static bool i915_rc6_ctx_corrupted(struct drm_i915_private *dev_priv)
++{
++ return !I915_READ(GEN8_RC6_CTX_INFO);
++}
++
++static void i915_rc6_ctx_wa_init(struct drm_i915_private *i915)
++{
++ if (!NEEDS_RC6_CTX_CORRUPTION_WA(i915))
++ return;
++
++ if (i915_rc6_ctx_corrupted(i915)) {
++ DRM_INFO("RC6 context corrupted, disabling runtime power management\n");
++ i915->rps.ctx_corrupted = true;
++ intel_runtime_pm_get(i915);
++ }
++}
++
++static void i915_rc6_ctx_wa_cleanup(struct drm_i915_private *i915)
++{
++ if (i915->rps.ctx_corrupted) {
++ intel_runtime_pm_put(i915);
++ i915->rps.ctx_corrupted = false;
++ }
++}
++
++/**
++ * i915_rc6_ctx_wa_suspend - system suspend sequence for the RC6 CTX WA
++ * @i915: i915 device
++ *
++ * Perform any steps needed to clean up the RC6 CTX WA before system suspend.
++ */
++void i915_rc6_ctx_wa_suspend(struct drm_i915_private *i915)
++{
++ if (i915->rps.ctx_corrupted)
++ intel_runtime_pm_put(i915);
++}
++
++/**
++ * i915_rc6_ctx_wa_resume - system resume sequence for the RC6 CTX WA
++ * @i915: i915 device
++ *
++ * Perform any steps needed to re-init the RC6 CTX WA after system resume.
++ */
++void i915_rc6_ctx_wa_resume(struct drm_i915_private *i915)
++{
++ if (!i915->rps.ctx_corrupted)
++ return;
++
++ if (i915_rc6_ctx_corrupted(i915)) {
++ intel_runtime_pm_get(i915);
++ return;
++ }
++
++ DRM_INFO("RC6 context restored, re-enabling runtime power management\n");
++ i915->rps.ctx_corrupted = false;
++}
++
++static void intel_disable_rc6(struct drm_device *dev);
++
++/**
++ * i915_rc6_ctx_wa_check - check for a new RC6 CTX corruption
++ * @i915: i915 device
++ *
++ * Check if an RC6 CTX corruption has happened since the last check and if so
++ * disable RC6 and runtime power management.
++ *
++ * Return false if no context corruption has happened since the last call of
++ * this function, true otherwise.
++*/
++bool i915_rc6_ctx_wa_check(struct drm_i915_private *i915)
++{
++ if (!NEEDS_RC6_CTX_CORRUPTION_WA(i915))
++ return false;
++
++ if (i915->rps.ctx_corrupted)
++ return false;
++
++ if (!i915_rc6_ctx_corrupted(i915))
++ return false;
++
++ DRM_NOTE("RC6 context corruption, disabling runtime power management\n");
++
++ intel_disable_rc6(i915->dev);
++ i915->rps.ctx_corrupted = true;
++ intel_runtime_pm_get_noresume(i915);
++
++ return true;
++}
++
+ void intel_init_gt_powersave(struct drm_device *dev)
+ {
+ i915.enable_rc6 = sanitize_rc6_option(dev, i915.enable_rc6);
+
++ i915_rc6_ctx_wa_init(to_i915(dev));
++
+ if (IS_CHERRYVIEW(dev))
+ cherryview_init_gt_powersave(dev);
+ else if (IS_VALLEYVIEW(dev))
+@@ -6144,6 +6257,8 @@ void intel_cleanup_gt_powersave(struct drm_device *dev)
+ return;
+ else if (IS_VALLEYVIEW(dev))
+ valleyview_cleanup_gt_powersave(dev);
++
++ i915_rc6_ctx_wa_cleanup(to_i915(dev));
+ }
+
+ static void gen6_suspend_rps(struct drm_device *dev)
+@@ -6176,6 +6291,38 @@ void intel_suspend_gt_powersave(struct drm_device *dev)
+ gen6_rps_idle(dev_priv);
+ }
+
++static void __intel_disable_rc6(struct drm_device *dev)
++{
++ if (INTEL_INFO(dev)->gen >= 9)
++ gen9_disable_rc6(dev);
++ else if (IS_CHERRYVIEW(dev))
++ cherryview_disable_rc6(dev);
++ else if (IS_VALLEYVIEW(dev))
++ valleyview_disable_rc6(dev);
++ else
++ gen6_disable_rc6(dev);
++}
++
++static void intel_disable_rc6(struct drm_device *dev)
++{
++ struct drm_i915_private *dev_priv = to_i915(dev);
++
++ mutex_lock(&dev_priv->rps.hw_lock);
++ __intel_disable_rc6(dev);
++ mutex_unlock(&dev_priv->rps.hw_lock);
++}
++
++static void intel_disable_rps(struct drm_device *dev)
++{
++ if (IS_CHERRYVIEW(dev) || IS_VALLEYVIEW(dev))
++ return;
++
++ if (INTEL_INFO(dev)->gen >= 9)
++ gen9_disable_rps(dev);
++ else
++ gen6_disable_rps(dev);
++}
++
+ void intel_disable_gt_powersave(struct drm_device *dev)
+ {
+ struct drm_i915_private *dev_priv = dev->dev_private;
+@@ -6186,16 +6333,12 @@ void intel_disable_gt_powersave(struct drm_device *dev)
+ intel_suspend_gt_powersave(dev);
+
+ mutex_lock(&dev_priv->rps.hw_lock);
+- if (INTEL_INFO(dev)->gen >= 9)
+- gen9_disable_rps(dev);
+- else if (IS_CHERRYVIEW(dev))
+- cherryview_disable_rps(dev);
+- else if (IS_VALLEYVIEW(dev))
+- valleyview_disable_rps(dev);
+- else
+- gen6_disable_rps(dev);
++
++ __intel_disable_rc6(dev);
++ intel_disable_rps(dev);
+
+ dev_priv->rps.enabled = false;
++
+ mutex_unlock(&dev_priv->rps.hw_lock);
+ }
+ }
+diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
+index 9d48443bca2e..df6547f60a5c 100644
+--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
++++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
+@@ -2058,6 +2058,8 @@ static void intel_destroy_ringbuffer_obj(struct intel_ringbuffer *ringbuf)
+ static int intel_alloc_ringbuffer_obj(struct drm_device *dev,
+ struct intel_ringbuffer *ringbuf)
+ {
++ struct drm_i915_private *dev_priv = to_i915(dev);
++ struct i915_address_space *vm = &dev_priv->gtt.base;
+ struct drm_i915_gem_object *obj;
+
+ obj = NULL;
+@@ -2068,8 +2070,12 @@ static int intel_alloc_ringbuffer_obj(struct drm_device *dev,
+ if (obj == NULL)
+ return -ENOMEM;
+
+- /* mark ring buffers as read-only from GPU side by default */
+- obj->gt_ro = 1;
++ /*
++ * Mark ring buffers as read-only from GPU side (so no stray overwrites)
++ * if supported by the platform's GGTT.
++ */
++ if (vm->has_read_only)
++ obj->gt_ro = 1;
+
+ ringbuf->obj = obj;
+
+diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
+index 49fa41dc0eb6..56c872b89a92 100644
+--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
++++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
+@@ -314,7 +314,8 @@ struct intel_engine_cs {
+ volatile u32 *cpu_page;
+ } scratch;
+
+- bool needs_cmd_parser;
++ bool using_cmd_parser;
++ bool requires_cmd_parser;
+
+ /*
+ * Table of commands the command parser needs to know about
+diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
+index 892d0a71d766..57724a3afe78 100644
+--- a/drivers/gpu/drm/radeon/si_dpm.c
++++ b/drivers/gpu/drm/radeon/si_dpm.c
+@@ -1956,6 +1956,7 @@ static void si_initialize_powertune_defaults(struct radeon_device *rdev)
+ case 0x682C:
+ si_pi->cac_weights = cac_weights_cape_verde_pro;
+ si_pi->dte_data = dte_data_sun_xt;
++ update_dte_from_pl2 = true;
+ break;
+ case 0x6825:
+ case 0x6827:
+diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c
+index 1880105cc8c4..778a46247f8d 100644
+--- a/drivers/iio/imu/adis16480.c
++++ b/drivers/iio/imu/adis16480.c
+@@ -266,8 +266,11 @@ static int adis16480_set_freq(struct iio_dev *indio_dev, int val, int val2)
+ struct adis16480 *st = iio_priv(indio_dev);
+ unsigned int t;
+
++ if (val < 0 || val2 < 0)
++ return -EINVAL;
++
+ t = val * 1000 + val2 / 1000;
+- if (t <= 0)
++ if (t == 0)
+ return -EINVAL;
+
+ t = 2460000 / t;
+diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
+index 1bf4f54c2bef..e31b4c7d2522 100644
+--- a/drivers/net/bonding/bond_main.c
++++ b/drivers/net/bonding/bond_main.c
+@@ -1719,7 +1719,8 @@ err_detach:
+ slave_disable_netpoll(new_slave);
+
+ err_close:
+- slave_dev->priv_flags &= ~IFF_BONDING;
++ if (!netif_is_bond_master(slave_dev))
++ slave_dev->priv_flags &= ~IFF_BONDING;
+ dev_close(slave_dev);
+
+ err_restore_mac:
+@@ -1915,7 +1916,8 @@ static int __bond_release_one(struct net_device *bond_dev,
+
+ dev_set_mtu(slave_dev, slave->original_mtu);
+
+- slave_dev->priv_flags &= ~IFF_BONDING;
++ if (!netif_is_bond_master(slave_dev))
++ slave_dev->priv_flags &= ~IFF_BONDING;
+
+ bond_free_slave(slave);
+
+diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
+index e3dccd3200d5..7d35f6737499 100644
+--- a/drivers/net/can/c_can/c_can.c
++++ b/drivers/net/can/c_can/c_can.c
+@@ -97,6 +97,9 @@
+ #define BTR_TSEG2_SHIFT 12
+ #define BTR_TSEG2_MASK (0x7 << BTR_TSEG2_SHIFT)
+
++/* interrupt register */
++#define INT_STS_PENDING 0x8000
++
+ /* brp extension register */
+ #define BRP_EXT_BRPE_MASK 0x0f
+ #define BRP_EXT_BRPE_SHIFT 0
+@@ -1029,10 +1032,16 @@ static int c_can_poll(struct napi_struct *napi, int quota)
+ u16 curr, last = priv->last_status;
+ int work_done = 0;
+
+- priv->last_status = curr = priv->read_reg(priv, C_CAN_STS_REG);
+- /* Ack status on C_CAN. D_CAN is self clearing */
+- if (priv->type != BOSCH_D_CAN)
+- priv->write_reg(priv, C_CAN_STS_REG, LEC_UNUSED);
++ /* Only read the status register if a status interrupt was pending */
++ if (atomic_xchg(&priv->sie_pending, 0)) {
++ priv->last_status = curr = priv->read_reg(priv, C_CAN_STS_REG);
++ /* Ack status on C_CAN. D_CAN is self clearing */
++ if (priv->type != BOSCH_D_CAN)
++ priv->write_reg(priv, C_CAN_STS_REG, LEC_UNUSED);
++ } else {
++ /* no change detected ... */
++ curr = last;
++ }
+
+ /* handle state changes */
+ if ((curr & STATUS_EWARN) && (!(last & STATUS_EWARN))) {
+@@ -1083,10 +1092,16 @@ static irqreturn_t c_can_isr(int irq, void *dev_id)
+ {
+ struct net_device *dev = (struct net_device *)dev_id;
+ struct c_can_priv *priv = netdev_priv(dev);
++ int reg_int;
+
+- if (!priv->read_reg(priv, C_CAN_INT_REG))
++ reg_int = priv->read_reg(priv, C_CAN_INT_REG);
++ if (!reg_int)
+ return IRQ_NONE;
+
++ /* save for later use */
++ if (reg_int & INT_STS_PENDING)
++ atomic_set(&priv->sie_pending, 1);
++
+ /* disable all interrupts and schedule the NAPI */
+ c_can_irq_control(priv, false);
+ napi_schedule(&priv->napi);
+diff --git a/drivers/net/can/c_can/c_can.h b/drivers/net/can/c_can/c_can.h
+index 8acdc7fa4792..d5567a7c1c6d 100644
+--- a/drivers/net/can/c_can/c_can.h
++++ b/drivers/net/can/c_can/c_can.h
+@@ -198,6 +198,7 @@ struct c_can_priv {
+ struct net_device *dev;
+ struct device *device;
+ atomic_t tx_active;
++ atomic_t sie_pending;
+ unsigned long tx_dir;
+ int last_status;
+ u16 (*read_reg) (const struct c_can_priv *priv, enum reg index);
+diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
+index baef09b9449f..6b866d0451b2 100644
+--- a/drivers/net/can/flexcan.c
++++ b/drivers/net/can/flexcan.c
+@@ -923,6 +923,7 @@ static int flexcan_chip_start(struct net_device *dev)
+ reg_mecr = flexcan_read(®s->mecr);
+ reg_mecr &= ~FLEXCAN_MECR_ECRWRDIS;
+ flexcan_write(reg_mecr, ®s->mecr);
++ reg_mecr |= FLEXCAN_MECR_ECCDIS;
+ reg_mecr &= ~(FLEXCAN_MECR_NCEFAFRZ | FLEXCAN_MECR_HANCEI_MSK |
+ FLEXCAN_MECR_FANCEI_MSK);
+ flexcan_write(reg_mecr, ®s->mecr);
+diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
+index b227f81e4a7e..6982ab8777b7 100644
+--- a/drivers/net/can/usb/gs_usb.c
++++ b/drivers/net/can/usb/gs_usb.c
+@@ -617,6 +617,7 @@ static int gs_can_open(struct net_device *netdev)
+ rc);
+
+ usb_unanchor_urb(urb);
++ usb_free_urb(urb);
+ break;
+ }
+
+diff --git a/drivers/net/can/usb/peak_usb/pcan_usb.c b/drivers/net/can/usb/peak_usb/pcan_usb.c
+index 838545ce468d..e626c2afbbb1 100644
+--- a/drivers/net/can/usb/peak_usb/pcan_usb.c
++++ b/drivers/net/can/usb/peak_usb/pcan_usb.c
+@@ -108,7 +108,7 @@ struct pcan_usb_msg_context {
+ u8 *end;
+ u8 rec_cnt;
+ u8 rec_idx;
+- u8 rec_data_idx;
++ u8 rec_ts_idx;
+ struct net_device *netdev;
+ struct pcan_usb *pdev;
+ };
+@@ -552,10 +552,15 @@ static int pcan_usb_decode_status(struct pcan_usb_msg_context *mc,
+ mc->ptr += PCAN_USB_CMD_ARGS;
+
+ if (status_len & PCAN_USB_STATUSLEN_TIMESTAMP) {
+- int err = pcan_usb_decode_ts(mc, !mc->rec_idx);
++ int err = pcan_usb_decode_ts(mc, !mc->rec_ts_idx);
+
+ if (err)
+ return err;
++
++ /* Next packet in the buffer will have a timestamp on a single
++ * byte
++ */
++ mc->rec_ts_idx++;
+ }
+
+ switch (f) {
+@@ -638,10 +643,13 @@ static int pcan_usb_decode_data(struct pcan_usb_msg_context *mc, u8 status_len)
+
+ cf->can_dlc = get_can_dlc(rec_len);
+
+- /* first data packet timestamp is a word */
+- if (pcan_usb_decode_ts(mc, !mc->rec_data_idx))
++ /* Only first packet timestamp is a word */
++ if (pcan_usb_decode_ts(mc, !mc->rec_ts_idx))
+ goto decode_failed;
+
++ /* Next packet in the buffer will have a timestamp on a single byte */
++ mc->rec_ts_idx++;
++
+ /* read data */
+ memset(cf->data, 0x0, sizeof(cf->data));
+ if (status_len & PCAN_USB_STATUSLEN_RTR) {
+@@ -695,7 +703,6 @@ static int pcan_usb_decode_msg(struct peak_usb_device *dev, u8 *ibuf, u32 lbuf)
+ /* handle normal can frames here */
+ } else {
+ err = pcan_usb_decode_data(&mc, sl);
+- mc.rec_data_idx++;
+ }
+ }
+
+diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+index b1d68f49b398..8c47cc8dc896 100644
+--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
++++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+@@ -776,7 +776,7 @@ static int peak_usb_create_dev(const struct peak_usb_adapter *peak_usb_adapter,
+ dev = netdev_priv(netdev);
+
+ /* allocate a buffer large enough to send commands */
+- dev->cmd_buf = kmalloc(PCAN_USB_MAX_CMD_LEN, GFP_KERNEL);
++ dev->cmd_buf = kzalloc(PCAN_USB_MAX_CMD_LEN, GFP_KERNEL);
+ if (!dev->cmd_buf) {
+ err = -ENOMEM;
+ goto lbl_free_candev;
+diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c
+index 522286cc0f9c..50d9b945089e 100644
+--- a/drivers/net/can/usb/usb_8dev.c
++++ b/drivers/net/can/usb/usb_8dev.c
+@@ -1010,9 +1010,8 @@ static void usb_8dev_disconnect(struct usb_interface *intf)
+ netdev_info(priv->netdev, "device disconnected\n");
+
+ unregister_netdev(priv->netdev);
+- free_candev(priv->netdev);
+-
+ unlink_all_urbs(priv);
++ free_candev(priv->netdev);
+ }
+
+ }
+diff --git a/drivers/net/ethernet/hisilicon/hip04_eth.c b/drivers/net/ethernet/hisilicon/hip04_eth.c
+index e8b7dc1bcfa6..2a7dfac20546 100644
+--- a/drivers/net/ethernet/hisilicon/hip04_eth.c
++++ b/drivers/net/ethernet/hisilicon/hip04_eth.c
+@@ -950,7 +950,6 @@ static int hip04_remove(struct platform_device *pdev)
+
+ hip04_free_ring(ndev, d);
+ unregister_netdev(ndev);
+- free_irq(ndev->irq, ndev);
+ of_node_put(priv->phy_node);
+ cancel_work_sync(&priv->tx_timeout_task);
+ free_netdev(ndev);
+diff --git a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c
+index d70b2e5d5222..cbb0bdf85177 100644
+--- a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c
++++ b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c
+@@ -628,6 +628,7 @@ static int e1000_set_ringparam(struct net_device *netdev,
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ rxdr[i].count = rxdr->count;
+
++ err = 0;
+ if (netif_running(adapter->netdev)) {
+ /* Try to get new resources before deleting old */
+ err = e1000_setup_all_rx_resources(adapter);
+@@ -648,14 +649,13 @@ static int e1000_set_ringparam(struct net_device *netdev,
+ adapter->rx_ring = rxdr;
+ adapter->tx_ring = txdr;
+ err = e1000_up(adapter);
+- if (err)
+- goto err_setup;
+ }
+ kfree(tx_old);
+ kfree(rx_old);
+
+ clear_bit(__E1000_RESETTING, &adapter->flags);
+- return 0;
++ return err;
++
+ err_setup_tx:
+ e1000_free_all_rx_resources(adapter);
+ err_setup_rx:
+@@ -667,7 +667,6 @@ err_alloc_rx:
+ err_alloc_tx:
+ if (netif_running(adapter->netdev))
+ e1000_up(adapter);
+-err_setup:
+ clear_bit(__E1000_RESETTING, &adapter->flags);
+ return err;
+ }
+diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
+index 70ed5e5c3514..9404f38d9d0d 100644
+--- a/drivers/net/ethernet/intel/igb/igb_main.c
++++ b/drivers/net/ethernet/intel/igb/igb_main.c
+@@ -1673,7 +1673,8 @@ static void igb_check_swap_media(struct igb_adapter *adapter)
+ if ((hw->phy.media_type == e1000_media_type_copper) &&
+ (!(connsw & E1000_CONNSW_AUTOSENSE_EN))) {
+ swap_now = true;
+- } else if (!(connsw & E1000_CONNSW_SERDESD)) {
++ } else if ((hw->phy.media_type != e1000_media_type_copper) &&
++ !(connsw & E1000_CONNSW_SERDESD)) {
+ /* copper signal takes time to appear */
+ if (adapter->copper_tries < 4) {
+ adapter->copper_tries++;
+diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
+index f4657a2e730a..8b63c9d183a2 100644
+--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
++++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
+@@ -1465,8 +1465,16 @@ enum qede_remove_mode {
+ static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
+ {
+ struct net_device *ndev = pci_get_drvdata(pdev);
+- struct qede_dev *edev = netdev_priv(ndev);
+- struct qed_dev *cdev = edev->cdev;
++ struct qede_dev *edev;
++ struct qed_dev *cdev;
++
++ if (!ndev) {
++ dev_info(&pdev->dev, "Device has already been removed\n");
++ return;
++ }
++
++ edev = netdev_priv(ndev);
++ cdev = edev->cdev;
+
+ DP_INFO(edev, "Starting qede_remove\n");
+
+diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
+index 442efbccd005..71ef895b4dca 100644
+--- a/drivers/net/usb/cdc_ncm.c
++++ b/drivers/net/usb/cdc_ncm.c
+@@ -533,8 +533,8 @@ static void cdc_ncm_set_dgram_size(struct usbnet *dev, int new_size)
+ /* read current mtu value from device */
+ err = usbnet_read_cmd(dev, USB_CDC_GET_MAX_DATAGRAM_SIZE,
+ USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
+- 0, iface_no, &max_datagram_size, 2);
+- if (err < 0) {
++ 0, iface_no, &max_datagram_size, sizeof(max_datagram_size));
++ if (err < sizeof(max_datagram_size)) {
+ dev_dbg(&dev->intf->dev, "GET_MAX_DATAGRAM_SIZE failed\n");
+ goto out;
+ }
+@@ -545,7 +545,7 @@ static void cdc_ncm_set_dgram_size(struct usbnet *dev, int new_size)
+ max_datagram_size = cpu_to_le16(ctx->max_datagram_size);
+ err = usbnet_write_cmd(dev, USB_CDC_SET_MAX_DATAGRAM_SIZE,
+ USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_INTERFACE,
+- 0, iface_no, &max_datagram_size, 2);
++ 0, iface_no, &max_datagram_size, sizeof(max_datagram_size));
+ if (err < 0)
+ dev_dbg(&dev->intf->dev, "SET_MAX_DATAGRAM_SIZE failed\n");
+
+diff --git a/drivers/nfc/fdp/i2c.c b/drivers/nfc/fdp/i2c.c
+index a5d7332dfce5..a54e67cf0493 100644
+--- a/drivers/nfc/fdp/i2c.c
++++ b/drivers/nfc/fdp/i2c.c
+@@ -268,7 +268,7 @@ static void fdp_nci_i2c_read_device_properties(struct device *dev,
+ *fw_vsc_cfg, len);
+
+ if (r) {
+- devm_kfree(dev, fw_vsc_cfg);
++ devm_kfree(dev, *fw_vsc_cfg);
+ goto vsc_read_err;
+ }
+ } else {
+diff --git a/drivers/nfc/st21nfca/core.c b/drivers/nfc/st21nfca/core.c
+index dd8b150fbffa..1826cd330468 100644
+--- a/drivers/nfc/st21nfca/core.c
++++ b/drivers/nfc/st21nfca/core.c
+@@ -726,6 +726,7 @@ static int st21nfca_hci_complete_target_discovered(struct nfc_hci_dev *hdev,
+ NFC_PROTO_FELICA_MASK;
+ } else {
+ kfree_skb(nfcid_skb);
++ nfcid_skb = NULL;
+ /* P2P in type A */
+ r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_F_GATE,
+ ST21NFCA_RF_READER_F_NFCID1,
+diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c
+index 30323114c53c..9865793b538a 100644
+--- a/drivers/pci/host/pci-tegra.c
++++ b/drivers/pci/host/pci-tegra.c
+@@ -586,12 +586,15 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf1, tegra_pcie_fixup_class);
+ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1c, tegra_pcie_fixup_class);
+ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1d, tegra_pcie_fixup_class);
+
+-/* Tegra PCIE requires relaxed ordering */
++/* Tegra20 and Tegra30 PCIE requires relaxed ordering */
+ static void tegra_pcie_relax_enable(struct pci_dev *dev)
+ {
+ pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN);
+ }
+-DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, tegra_pcie_relax_enable);
++DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0bf0, tegra_pcie_relax_enable);
++DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0bf1, tegra_pcie_relax_enable);
++DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0e1c, tegra_pcie_relax_enable);
++DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0e1d, tegra_pcie_relax_enable);
+
+ static int tegra_pcie_setup(int nr, struct pci_sys_data *sys)
+ {
+diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
+index 193733e8c823..3a4613f9fb9f 100644
+--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
++++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
+@@ -759,9 +759,9 @@ lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
+
+ if (!(vport->fc_flag & FC_PT2PT)) {
+ /* Check config parameter use-adisc or FCP-2 */
+- if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
++ if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
+ ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
+- (ndlp->nlp_type & NLP_FCP_TARGET))) {
++ (ndlp->nlp_type & NLP_FCP_TARGET)))) {
+ spin_lock_irq(shost->host_lock);
+ ndlp->nlp_flag |= NLP_NPR_ADISC;
+ spin_unlock_irq(shost->host_lock);
+diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c
+index c26acde797f0..2d5375d67736 100644
+--- a/drivers/scsi/qla2xxx/qla_bsg.c
++++ b/drivers/scsi/qla2xxx/qla_bsg.c
+@@ -252,7 +252,7 @@ qla2x00_process_els(struct fc_bsg_job *bsg_job)
+ srb_t *sp;
+ const char *type;
+ int req_sg_cnt, rsp_sg_cnt;
+- int rval = (DRIVER_ERROR << 16);
++ int rval = (DID_ERROR << 16);
+ uint16_t nextlid = 0;
+
+ if (bsg_job->request->msgcode == FC_BSG_RPT_ELS) {
+@@ -426,7 +426,7 @@ qla2x00_process_ct(struct fc_bsg_job *bsg_job)
+ struct Scsi_Host *host = bsg_job->shost;
+ scsi_qla_host_t *vha = shost_priv(host);
+ struct qla_hw_data *ha = vha->hw;
+- int rval = (DRIVER_ERROR << 16);
++ int rval = (DID_ERROR << 16);
+ int req_sg_cnt, rsp_sg_cnt;
+ uint16_t loop_id;
+ struct fc_port *fcport;
+@@ -1910,7 +1910,7 @@ qlafx00_mgmt_cmd(struct fc_bsg_job *bsg_job)
+ struct Scsi_Host *host = bsg_job->shost;
+ scsi_qla_host_t *vha = shost_priv(host);
+ struct qla_hw_data *ha = vha->hw;
+- int rval = (DRIVER_ERROR << 16);
++ int rval = (DID_ERROR << 16);
+ struct qla_mt_iocb_rqst_fx00 *piocb_rqst;
+ srb_t *sp;
+ int req_sg_cnt = 0, rsp_sg_cnt = 0;
+diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
+index ff5df33fc740..611a127f08d8 100644
+--- a/drivers/scsi/qla2xxx/qla_os.c
++++ b/drivers/scsi/qla2xxx/qla_os.c
+@@ -2962,6 +2962,10 @@ qla2x00_shutdown(struct pci_dev *pdev)
+ /* Stop currently executing firmware. */
+ qla2x00_try_to_stop_firmware(vha);
+
++ /* Disable timer */
++ if (vha->timer_active)
++ qla2x00_stop_timer(vha);
++
+ /* Turn adapter off line */
+ vha->flags.online = 0;
+
+diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
+index 5abc4e5434ec..cbd064fae23b 100644
+--- a/drivers/usb/core/config.c
++++ b/drivers/usb/core/config.c
+@@ -314,6 +314,11 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
+
+ /* Validate the wMaxPacketSize field */
+ maxp = usb_endpoint_maxp(&endpoint->desc);
++ if (maxp == 0) {
++ dev_warn(ddev, "config %d interface %d altsetting %d endpoint 0x%X has wMaxPacketSize 0, skipping\n",
++ cfgno, inum, asnum, d->bEndpointAddress);
++ goto skip_to_next_endpoint_or_interface_descriptor;
++ }
+
+ /* Find the highest legal maxpacket size for this endpoint */
+ i = 0; /* additional transactions per microframe */
+diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
+index 351a406b97af..0f2d1e98481f 100644
+--- a/drivers/usb/gadget/composite.c
++++ b/drivers/usb/gadget/composite.c
+@@ -2068,14 +2068,18 @@ void composite_dev_cleanup(struct usb_composite_dev *cdev)
+ usb_ep_dequeue(cdev->gadget->ep0, cdev->os_desc_req);
+
+ kfree(cdev->os_desc_req->buf);
++ cdev->os_desc_req->buf = NULL;
+ usb_ep_free_request(cdev->gadget->ep0, cdev->os_desc_req);
++ cdev->os_desc_req = NULL;
+ }
+ if (cdev->req) {
+ if (cdev->setup_pending)
+ usb_ep_dequeue(cdev->gadget->ep0, cdev->req);
+
+ kfree(cdev->req->buf);
++ cdev->req->buf = NULL;
+ usb_ep_free_request(cdev->gadget->ep0, cdev->req);
++ cdev->req = NULL;
+ }
+ cdev->next_string_id = 0;
+ device_remove_file(&cdev->gadget->dev, &dev_attr_suspended);
+diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
+index d412e234f336..f91a43140694 100644
+--- a/drivers/usb/gadget/configfs.c
++++ b/drivers/usb/gadget/configfs.c
+@@ -62,6 +62,8 @@ struct gadget_info {
+ bool use_os_desc;
+ char b_vendor_code;
+ char qw_sign[OS_STRING_QW_SIGN_LEN];
++ spinlock_t spinlock;
++ bool unbind;
+ };
+
+ static inline struct gadget_info *to_gadget_info(struct config_item *item)
+@@ -1246,6 +1248,7 @@ static int configfs_composite_bind(struct usb_gadget *gadget,
+ int ret;
+
+ /* the gi->lock is hold by the caller */
++ gi->unbind = 0;
+ cdev->gadget = gadget;
+ set_gadget_data(gadget, cdev);
+ ret = composite_dev_prepare(composite, cdev);
+@@ -1378,31 +1381,128 @@ static void configfs_composite_unbind(struct usb_gadget *gadget)
+ {
+ struct usb_composite_dev *cdev;
+ struct gadget_info *gi;
++ unsigned long flags;
+
+ /* the gi->lock is hold by the caller */
+
+ cdev = get_gadget_data(gadget);
+ gi = container_of(cdev, struct gadget_info, cdev);
++ spin_lock_irqsave(&gi->spinlock, flags);
++ gi->unbind = 1;
++ spin_unlock_irqrestore(&gi->spinlock, flags);
+
+ kfree(otg_desc[0]);
+ otg_desc[0] = NULL;
+ purge_configs_funcs(gi);
+ composite_dev_cleanup(cdev);
+ usb_ep_autoconfig_reset(cdev->gadget);
++ spin_lock_irqsave(&gi->spinlock, flags);
+ cdev->gadget = NULL;
+ set_gadget_data(gadget, NULL);
++ spin_unlock_irqrestore(&gi->spinlock, flags);
++}
++
++static int configfs_composite_setup(struct usb_gadget *gadget,
++ const struct usb_ctrlrequest *ctrl)
++{
++ struct usb_composite_dev *cdev;
++ struct gadget_info *gi;
++ unsigned long flags;
++ int ret;
++
++ cdev = get_gadget_data(gadget);
++ if (!cdev)
++ return 0;
++
++ gi = container_of(cdev, struct gadget_info, cdev);
++ spin_lock_irqsave(&gi->spinlock, flags);
++ cdev = get_gadget_data(gadget);
++ if (!cdev || gi->unbind) {
++ spin_unlock_irqrestore(&gi->spinlock, flags);
++ return 0;
++ }
++
++ ret = composite_setup(gadget, ctrl);
++ spin_unlock_irqrestore(&gi->spinlock, flags);
++ return ret;
++}
++
++static void configfs_composite_disconnect(struct usb_gadget *gadget)
++{
++ struct usb_composite_dev *cdev;
++ struct gadget_info *gi;
++ unsigned long flags;
++
++ cdev = get_gadget_data(gadget);
++ if (!cdev)
++ return;
++
++ gi = container_of(cdev, struct gadget_info, cdev);
++ spin_lock_irqsave(&gi->spinlock, flags);
++ cdev = get_gadget_data(gadget);
++ if (!cdev || gi->unbind) {
++ spin_unlock_irqrestore(&gi->spinlock, flags);
++ return;
++ }
++
++ composite_disconnect(gadget);
++ spin_unlock_irqrestore(&gi->spinlock, flags);
++}
++
++static void configfs_composite_suspend(struct usb_gadget *gadget)
++{
++ struct usb_composite_dev *cdev;
++ struct gadget_info *gi;
++ unsigned long flags;
++
++ cdev = get_gadget_data(gadget);
++ if (!cdev)
++ return;
++
++ gi = container_of(cdev, struct gadget_info, cdev);
++ spin_lock_irqsave(&gi->spinlock, flags);
++ cdev = get_gadget_data(gadget);
++ if (!cdev || gi->unbind) {
++ spin_unlock_irqrestore(&gi->spinlock, flags);
++ return;
++ }
++
++ composite_suspend(gadget);
++ spin_unlock_irqrestore(&gi->spinlock, flags);
++}
++
++static void configfs_composite_resume(struct usb_gadget *gadget)
++{
++ struct usb_composite_dev *cdev;
++ struct gadget_info *gi;
++ unsigned long flags;
++
++ cdev = get_gadget_data(gadget);
++ if (!cdev)
++ return;
++
++ gi = container_of(cdev, struct gadget_info, cdev);
++ spin_lock_irqsave(&gi->spinlock, flags);
++ cdev = get_gadget_data(gadget);
++ if (!cdev || gi->unbind) {
++ spin_unlock_irqrestore(&gi->spinlock, flags);
++ return;
++ }
++
++ composite_resume(gadget);
++ spin_unlock_irqrestore(&gi->spinlock, flags);
+ }
+
+ static const struct usb_gadget_driver configfs_driver_template = {
+ .bind = configfs_composite_bind,
+ .unbind = configfs_composite_unbind,
+
+- .setup = composite_setup,
+- .reset = composite_disconnect,
+- .disconnect = composite_disconnect,
++ .setup = configfs_composite_setup,
++ .reset = configfs_composite_disconnect,
++ .disconnect = configfs_composite_disconnect,
+
+- .suspend = composite_suspend,
+- .resume = composite_resume,
++ .suspend = configfs_composite_suspend,
++ .resume = configfs_composite_resume,
+
+ .max_speed = USB_SPEED_SUPER,
+ .driver = {
+diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c
+index 585cb8734f50..668ac5e8681b 100644
+--- a/drivers/usb/gadget/udc/atmel_usba_udc.c
++++ b/drivers/usb/gadget/udc/atmel_usba_udc.c
+@@ -403,9 +403,11 @@ static void submit_request(struct usba_ep *ep, struct usba_request *req)
+ next_fifo_transaction(ep, req);
+ if (req->last_transaction) {
+ usba_ep_writel(ep, CTL_DIS, USBA_TX_PK_RDY);
+- usba_ep_writel(ep, CTL_ENB, USBA_TX_COMPLETE);
++ if (ep_is_control(ep))
++ usba_ep_writel(ep, CTL_ENB, USBA_TX_COMPLETE);
+ } else {
+- usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE);
++ if (ep_is_control(ep))
++ usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE);
+ usba_ep_writel(ep, CTL_ENB, USBA_TX_PK_RDY);
+ }
+ }
+diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c
+index 8991a4070792..bd98557caa28 100644
+--- a/drivers/usb/gadget/udc/fsl_udc_core.c
++++ b/drivers/usb/gadget/udc/fsl_udc_core.c
+@@ -2570,7 +2570,7 @@ static int fsl_udc_remove(struct platform_device *pdev)
+ dma_pool_destroy(udc_controller->td_pool);
+ free_irq(udc_controller->irq, udc_controller);
+ iounmap(dr_regs);
+- if (pdata->operating_mode == FSL_USB2_DR_DEVICE)
++ if (res && (pdata->operating_mode == FSL_USB2_DR_DEVICE))
+ release_mem_region(res->start, resource_size(res));
+
+ /* free udc --wait for the release() finished */
+diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
+index 4d68a1e9e878..3476d02967f7 100644
+--- a/drivers/usb/usbip/vhci_hcd.c
++++ b/drivers/usb/usbip/vhci_hcd.c
+@@ -303,6 +303,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+ default:
+ break;
+ }
++ break;
+ default:
+ usbip_dbg_vhci_rh(" ClearPortFeature: default %x\n",
+ wValue);
+diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
+index e137ff6cd9da..aa4df4a02252 100644
+--- a/fs/ceph/caps.c
++++ b/fs/ceph/caps.c
+@@ -926,6 +926,11 @@ void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release)
+
+ dout("__ceph_remove_cap %p from %p\n", cap, &ci->vfs_inode);
+
++ /* remove from inode's cap rbtree, and clear auth cap */
++ rb_erase(&cap->ci_node, &ci->i_caps);
++ if (ci->i_auth_cap == cap)
++ ci->i_auth_cap = NULL;
++
+ /* remove from session list */
+ spin_lock(&session->s_cap_lock);
+ if (session->s_cap_iterator == cap) {
+@@ -961,11 +966,6 @@ void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release)
+
+ spin_unlock(&session->s_cap_lock);
+
+- /* remove from inode list */
+- rb_erase(&cap->ci_node, &ci->i_caps);
+- if (ci->i_auth_cap == cap)
+- ci->i_auth_cap = NULL;
+-
+ if (removed)
+ ceph_put_cap(mdsc, cap);
+
+diff --git a/fs/configfs/symlink.c b/fs/configfs/symlink.c
+index 66e8c5d58b21..3af565e8fd51 100644
+--- a/fs/configfs/symlink.c
++++ b/fs/configfs/symlink.c
+@@ -157,11 +157,42 @@ int configfs_symlink(struct inode *dir, struct dentry *dentry, const char *symna
+ !type->ct_item_ops->allow_link)
+ goto out_put;
+
++ /*
++ * This is really sick. What they wanted was a hybrid of
++ * link(2) and symlink(2) - they wanted the target resolved
++ * at syscall time (as link(2) would've done), be a directory
++ * (which link(2) would've refused to do) *AND* be a deep
++ * fucking magic, making the target busy from rmdir POV.
++ * symlink(2) is nothing of that sort, and the locking it
++ * gets matches the normal symlink(2) semantics. Without
++ * attempts to resolve the target (which might very well
++ * not even exist yet) done prior to locking the parent
++ * directory. This perversion, OTOH, needs to resolve
++ * the target, which would lead to obvious deadlocks if
++ * attempted with any directories locked.
++ *
++ * Unfortunately, that garbage is userland ABI and we should've
++ * said "no" back in 2005. Too late now, so we get to
++ * play very ugly games with locking.
++ *
++ * Try *ANYTHING* of that sort in new code, and you will
++ * really regret it. Just ask yourself - what could a BOFH
++ * do to me and do I want to find it out first-hand?
++ *
++ * AV, a thoroughly annoyed bastard.
++ */
++ inode_unlock(dir);
+ ret = get_target(symname, &path, &target_item, dentry->d_sb);
++ inode_lock(dir);
+ if (ret)
+ goto out_put;
+
+- ret = type->ct_item_ops->allow_link(parent_item, target_item);
++ if (dentry->d_inode || d_unhashed(dentry))
++ ret = -EEXIST;
++ else
++ ret = inode_permission(dir, MAY_WRITE | MAY_EXEC);
++ if (!ret)
++ ret = type->ct_item_ops->allow_link(parent_item, target_item);
+ if (!ret) {
+ mutex_lock(&configfs_symlink_mutex);
+ ret = create_link(parent_item, target_item, dentry);
+diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
+index 76597dd8cfe8..80ea03034017 100644
+--- a/fs/fs-writeback.c
++++ b/fs/fs-writeback.c
+@@ -582,10 +582,13 @@ void wbc_attach_and_unlock_inode(struct writeback_control *wbc,
+ spin_unlock(&inode->i_lock);
+
+ /*
+- * A dying wb indicates that the memcg-blkcg mapping has changed
+- * and a new wb is already serving the memcg. Switch immediately.
++ * A dying wb indicates that either the blkcg associated with the
++ * memcg changed or the associated memcg is dying. In the first
++ * case, a replacement wb should already be available and we should
++ * refresh the wb immediately. In the second case, trying to
++ * refresh will keep failing.
+ */
+- if (unlikely(wb_dying(wbc->wb)))
++ if (unlikely(wb_dying(wbc->wb) && !css_is_dying(wbc->wb->memcg_css)))
+ inode_switch_wbs(inode, wbc->wb_id);
+ }
+
+diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
+index 7af5eeabc80e..5dac3382405c 100644
+--- a/fs/nfs/delegation.c
++++ b/fs/nfs/delegation.c
+@@ -52,6 +52,16 @@ nfs4_is_valid_delegation(const struct nfs_delegation *delegation,
+ return false;
+ }
+
++struct nfs_delegation *nfs4_get_valid_delegation(const struct inode *inode)
++{
++ struct nfs_delegation *delegation;
++
++ delegation = rcu_dereference(NFS_I(inode)->delegation);
++ if (nfs4_is_valid_delegation(delegation, 0))
++ return delegation;
++ return NULL;
++}
++
+ static int
+ nfs4_do_check_delegation(struct inode *inode, fmode_t flags, bool mark)
+ {
+diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
+index 333063e032f0..26a8af7bdca3 100644
+--- a/fs/nfs/delegation.h
++++ b/fs/nfs/delegation.h
+@@ -58,6 +58,7 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state
+ int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid);
+ bool nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode, fmode_t flags);
+
++struct nfs_delegation *nfs4_get_valid_delegation(const struct inode *inode);
+ void nfs_mark_delegation_referenced(struct nfs_delegation *delegation);
+ int nfs4_have_delegation(struct inode *inode, fmode_t flags);
+ int nfs4_check_delegation(struct inode *inode, fmode_t flags);
+diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
+index 900a62a9ad4e..08207001d475 100644
+--- a/fs/nfs/nfs4proc.c
++++ b/fs/nfs/nfs4proc.c
+@@ -1243,8 +1243,6 @@ static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode,
+ return 0;
+ if ((delegation->type & fmode) != fmode)
+ return 0;
+- if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags))
+- return 0;
+ switch (claim) {
+ case NFS4_OPEN_CLAIM_NULL:
+ case NFS4_OPEN_CLAIM_FH:
+@@ -1473,7 +1471,6 @@ static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmo
+ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
+ {
+ struct nfs4_state *state = opendata->state;
+- struct nfs_inode *nfsi = NFS_I(state->inode);
+ struct nfs_delegation *delegation;
+ int open_mode = opendata->o_arg.open_flags;
+ fmode_t fmode = opendata->o_arg.fmode;
+@@ -1490,7 +1487,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
+ }
+ spin_unlock(&state->owner->so_lock);
+ rcu_read_lock();
+- delegation = rcu_dereference(nfsi->delegation);
++ delegation = nfs4_get_valid_delegation(state->inode);
+ if (!can_open_delegated(delegation, fmode, claim)) {
+ rcu_read_unlock();
+ break;
+@@ -1981,7 +1978,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
+ if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
+ goto out_no_action;
+ rcu_read_lock();
+- delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
++ delegation = nfs4_get_valid_delegation(data->state->inode);
+ if (can_open_delegated(delegation, data->o_arg.fmode, claim))
+ goto unlock_no_action;
+ rcu_read_unlock();
+diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
+index a6cc576fd467..b0156f8a9ab7 100644
+--- a/include/net/ip_vs.h
++++ b/include/net/ip_vs.h
+@@ -880,6 +880,7 @@ struct netns_ipvs {
+ struct delayed_work defense_work; /* Work handler */
+ int drop_rate;
+ int drop_counter;
++ int old_secure_tcp;
+ atomic_t dropentry;
+ /* locks in ctl.c */
+ spinlock_t dropentry_lock; /* drop entry handling */
+diff --git a/include/net/neighbour.h b/include/net/neighbour.h
+index f6017ddc4ded..1c0d07376125 100644
+--- a/include/net/neighbour.h
++++ b/include/net/neighbour.h
+@@ -425,8 +425,8 @@ static inline int neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
+ {
+ unsigned long now = jiffies;
+
+- if (neigh->used != now)
+- neigh->used = now;
++ if (READ_ONCE(neigh->used) != now)
++ WRITE_ONCE(neigh->used, now);
+ if (!(neigh->nud_state&(NUD_CONNECTED|NUD_DELAY|NUD_PROBE)))
+ return __neigh_event_send(neigh, skb);
+ return 0;
+diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
+index 4bd7508bedc9..b96df7499600 100644
+--- a/include/net/netfilter/nf_tables.h
++++ b/include/net/netfilter/nf_tables.h
+@@ -648,7 +648,8 @@ struct nft_expr_ops {
+ */
+ struct nft_expr {
+ const struct nft_expr_ops *ops;
+- unsigned char data[];
++ unsigned char data[]
++ __attribute__((aligned(__alignof__(u64))));
+ };
+
+ static inline void *nft_expr_priv(const struct nft_expr *expr)
+diff --git a/include/net/sock.h b/include/net/sock.h
+index 1571ab68de16..5ed4786a2058 100644
+--- a/include/net/sock.h
++++ b/include/net/sock.h
+@@ -2174,7 +2174,7 @@ static inline ktime_t sock_read_timestamp(struct sock *sk)
+
+ return kt;
+ #else
+- return sk->sk_stamp;
++ return READ_ONCE(sk->sk_stamp);
+ #endif
+ }
+
+@@ -2185,7 +2185,7 @@ static inline void sock_write_timestamp(struct sock *sk, ktime_t kt)
+ sk->sk_stamp = kt;
+ write_sequnlock(&sk->sk_stamp_seq);
+ #else
+- sk->sk_stamp = kt;
++ WRITE_ONCE(sk->sk_stamp, kt);
+ #endif
+ }
+
+diff --git a/lib/dump_stack.c b/lib/dump_stack.c
+index c30d07e99dba..72de6444934d 100644
+--- a/lib/dump_stack.c
++++ b/lib/dump_stack.c
+@@ -44,7 +44,12 @@ retry:
+ was_locked = 1;
+ } else {
+ local_irq_restore(flags);
+- cpu_relax();
++ /*
++ * Wait for the lock to release before jumping to
++ * atomic_cmpxchg() in order to mitigate the thundering herd
++ * problem.
++ */
++ do { cpu_relax(); } while (atomic_read(&dump_lock) != -1);
+ goto retry;
+ }
+
+diff --git a/mm/filemap.c b/mm/filemap.c
+index 21e750b6e810..f217120973eb 100644
+--- a/mm/filemap.c
++++ b/mm/filemap.c
+@@ -340,7 +340,8 @@ int __filemap_fdatawrite_range(struct address_space *mapping, loff_t start,
+ .range_end = end,
+ };
+
+- if (!mapping_cap_writeback_dirty(mapping))
++ if (!mapping_cap_writeback_dirty(mapping) ||
++ !mapping_tagged(mapping, PAGECACHE_TAG_DIRTY))
+ return 0;
+
+ wbc_attach_fdatawrite_inode(&wbc, mapping->host);
+diff --git a/mm/vmstat.c b/mm/vmstat.c
+index 59e131e82b81..9d8936c7b40d 100644
+--- a/mm/vmstat.c
++++ b/mm/vmstat.c
+@@ -1589,7 +1589,7 @@ static int __init setup_vmstat(void)
+ #endif
+ #ifdef CONFIG_PROC_FS
+ proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
+- proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
++ proc_create("pagetypeinfo", 0400, NULL, &pagetypeinfo_file_ops);
+ proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
+ proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
+ #endif
+diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c
+index 54f3d7cb23e6..caa26184f7e3 100644
+--- a/net/netfilter/ipset/ip_set_core.c
++++ b/net/netfilter/ipset/ip_set_core.c
+@@ -1930,8 +1930,9 @@ ip_set_sockfn_get(struct sock *sk, int optval, void __user *user, int *len)
+ }
+
+ req_version->version = IPSET_PROTOCOL;
+- ret = copy_to_user(user, req_version,
+- sizeof(struct ip_set_req_version));
++ if (copy_to_user(user, req_version,
++ sizeof(struct ip_set_req_version)))
++ ret = -EFAULT;
+ goto done;
+ }
+ case IP_SET_OP_GET_BYNAME: {
+@@ -1988,7 +1989,8 @@ ip_set_sockfn_get(struct sock *sk, int optval, void __user *user, int *len)
+ } /* end of switch(op) */
+
+ copy:
+- ret = copy_to_user(user, data, copylen);
++ if (copy_to_user(user, data, copylen))
++ ret = -EFAULT;
+
+ done:
+ vfree(data);
+diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
+index 56c62b65923f..b176f76dfaa1 100644
+--- a/net/netfilter/ipvs/ip_vs_ctl.c
++++ b/net/netfilter/ipvs/ip_vs_ctl.c
+@@ -97,7 +97,6 @@ static bool __ip_vs_addr_is_local_v6(struct net *net,
+ static void update_defense_level(struct netns_ipvs *ipvs)
+ {
+ struct sysinfo i;
+- static int old_secure_tcp = 0;
+ int availmem;
+ int nomem;
+ int to_change = -1;
+@@ -178,35 +177,35 @@ static void update_defense_level(struct netns_ipvs *ipvs)
+ spin_lock(&ipvs->securetcp_lock);
+ switch (ipvs->sysctl_secure_tcp) {
+ case 0:
+- if (old_secure_tcp >= 2)
++ if (ipvs->old_secure_tcp >= 2)
+ to_change = 0;
+ break;
+ case 1:
+ if (nomem) {
+- if (old_secure_tcp < 2)
++ if (ipvs->old_secure_tcp < 2)
+ to_change = 1;
+ ipvs->sysctl_secure_tcp = 2;
+ } else {
+- if (old_secure_tcp >= 2)
++ if (ipvs->old_secure_tcp >= 2)
+ to_change = 0;
+ }
+ break;
+ case 2:
+ if (nomem) {
+- if (old_secure_tcp < 2)
++ if (ipvs->old_secure_tcp < 2)
+ to_change = 1;
+ } else {
+- if (old_secure_tcp >= 2)
++ if (ipvs->old_secure_tcp >= 2)
+ to_change = 0;
+ ipvs->sysctl_secure_tcp = 1;
+ }
+ break;
+ case 3:
+- if (old_secure_tcp < 2)
++ if (ipvs->old_secure_tcp < 2)
+ to_change = 1;
+ break;
+ }
+- old_secure_tcp = ipvs->sysctl_secure_tcp;
++ ipvs->old_secure_tcp = ipvs->sysctl_secure_tcp;
+ if (to_change >= 0)
+ ip_vs_protocol_timeout_change(ipvs,
+ ipvs->sysctl_secure_tcp > 1);
+diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
+index 80def98c9dba..04d4c388a7a8 100644
+--- a/net/nfc/netlink.c
++++ b/net/nfc/netlink.c
+@@ -1066,7 +1066,6 @@ static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info)
+
+ local = nfc_llcp_find_local(dev);
+ if (!local) {
+- nfc_put_device(dev);
+ rc = -ENODEV;
+ goto exit;
+ }
+@@ -1126,7 +1125,6 @@ static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
+
+ local = nfc_llcp_find_local(dev);
+ if (!local) {
+- nfc_put_device(dev);
+ rc = -ENODEV;
+ goto exit;
+ }
+diff --git a/sound/firewire/bebob/bebob_focusrite.c b/sound/firewire/bebob/bebob_focusrite.c
+index f11090057949..d0a8736613a1 100644
+--- a/sound/firewire/bebob/bebob_focusrite.c
++++ b/sound/firewire/bebob/bebob_focusrite.c
+@@ -28,6 +28,8 @@
+ #define SAFFIRE_CLOCK_SOURCE_SPDIF 1
+
+ /* clock sources as returned from register of Saffire Pro 10 and 26 */
++#define SAFFIREPRO_CLOCK_SOURCE_SELECT_MASK 0x000000ff
++#define SAFFIREPRO_CLOCK_SOURCE_DETECT_MASK 0x0000ff00
+ #define SAFFIREPRO_CLOCK_SOURCE_INTERNAL 0
+ #define SAFFIREPRO_CLOCK_SOURCE_SKIP 1 /* never used on hardware */
+ #define SAFFIREPRO_CLOCK_SOURCE_SPDIF 2
+@@ -190,6 +192,7 @@ saffirepro_both_clk_src_get(struct snd_bebob *bebob, unsigned int *id)
+ map = saffirepro_clk_maps[1];
+
+ /* In a case that this driver cannot handle the value of register. */
++ value &= SAFFIREPRO_CLOCK_SOURCE_SELECT_MASK;
+ if (value >= SAFFIREPRO_CLOCK_SOURCE_COUNT || map[value] < 0) {
+ err = -EIO;
+ goto end;
+diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
+index c55c0131be0a..c0742ee11519 100644
+--- a/sound/pci/hda/patch_ca0132.c
++++ b/sound/pci/hda/patch_ca0132.c
+@@ -4440,7 +4440,7 @@ static void hp_callback(struct hda_codec *codec, struct hda_jack_callback *cb)
+ /* Delay enabling the HP amp, to let the mic-detection
+ * state machine run.
+ */
+- cancel_delayed_work_sync(&spec->unsol_hp_work);
++ cancel_delayed_work(&spec->unsol_hp_work);
+ schedule_delayed_work(&spec->unsol_hp_work, msecs_to_jiffies(500));
+ tbl = snd_hda_jack_tbl_get(codec, cb->nid);
+ if (tbl)
+diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
+index f6720afa9f34..97ebd1d3646d 100644
+--- a/tools/perf/util/hist.c
++++ b/tools/perf/util/hist.c
+@@ -1080,7 +1080,7 @@ void hists__collapse_resort(struct hists *hists, struct ui_progress *prog)
+ }
+ }
+
+-static int hist_entry__sort(struct hist_entry *a, struct hist_entry *b)
++static int64_t hist_entry__sort(struct hist_entry *a, struct hist_entry *b)
+ {
+ struct perf_hpp_fmt *fmt;
+ int64_t cmp = 0;
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