Re: [gentoo-user] chroot: cannot run command `bin/bash': Exec format error

[Bo Andresen <bo.andresen@gmail.com>]

On Thursday 23 February 2006 23:33, Boyd Stephen Smith Jr. wrote:
> On Thursday 23 February 2006 15:56, Bo Andresen <bo.andresen@gmail.com>
> > > A 64-bit kernel will run 32-bit binaries fine... Um, there may be a
> > > needed kernel option though... CONFIG_IA32_EMUL? Anyone?
> >
> > I cannot seem to find any such kernel config option.
>
> I think these are relevant:
> $ zgrep -i ia32 /proc/config.gz
> CONFIG_IA32_EMULATION=y
> CONFIG_IA32_AOUT=y

I cannot find those options.

~ # zcat /proc/config.gz | grep -i '32\|k8'
CONFIG_X86_32=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_MK8=y
# CONFIG_SCSI_QLA2322 is not set
# CONFIG_SCSI_NSP32 is not set
# CONFIG_PCNET32 is not set
# CONFIG_USB_SERIAL_MCT_U232 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
CONFIG_CRYPTO_CRC32C=m
CONFIG_CRC32=y
CONFIG_LIBCRC32C=m

I notice CONFIG_X86_32=y but cannot figure out where to change that in make 
menuconfig. Typing /X86_32 just gives this as a search result:

Symbol: X86_32 [=y]

> > Is there a way to verify that I really
> > am running a 64 kernel?
>
> I believe this tells you:
> $ uname -m
> x86_64

~ # uname -m
i686

> So, you may want to configure, make, and install your kernel like:
> make ARCH=x86_64 menuconfig
> make ARCH=x86_64
> make ARCH=x86_64 install
>
> (You don't need a CROSS_COMPILE prefix since gcc should work fine.)

Should I ignore all these warnings?

# make ARCH=x86_64 menuconfig
scripts/kconfig/mconf arch/x86_64/Kconfig
#
# using defaults found in .config
#
.config:90:warning: trying to assign nonexistent symbol X86_ELAN
.config:91:warning: trying to assign nonexistent symbol X86_VOYAGER
.config:93:warning: trying to assign nonexistent symbol X86_SUMMIT
.config:94:warning: trying to assign nonexistent symbol X86_BIGSMP
.config:96:warning: trying to assign nonexistent symbol X86_GENERICARCH
.config:97:warning: trying to assign nonexistent symbol X86_ES7000
.config:98:warning: trying to assign nonexistent symbol M386
.config:99:warning: trying to assign nonexistent symbol M486
.config:100:warning: trying to assign nonexistent symbol M586
.config:101:warning: trying to assign nonexistent symbol M586TSC
.config:102:warning: trying to assign nonexistent symbol M586MMX
.config:103:warning: trying to assign nonexistent symbol M686
.config:104:warning: trying to assign nonexistent symbol MPENTIUMII
.config:105:warning: trying to assign nonexistent symbol MPENTIUMIII
.config:106:warning: trying to assign nonexistent symbol MPENTIUMM
.config:107:warning: trying to assign nonexistent symbol MPENTIUM4
.config:108:warning: trying to assign nonexistent symbol MK6
.config:109:warning: trying to assign nonexistent symbol MK7
.config:111:warning: trying to assign nonexistent symbol MCRUSOE
.config:112:warning: trying to assign nonexistent symbol MEFFICEON
.config:113:warning: trying to assign nonexistent symbol MWINCHIPC6
.config:114:warning: trying to assign nonexistent symbol MWINCHIP2
.config:115:warning: trying to assign nonexistent symbol MWINCHIP3D
.config:116:warning: trying to assign nonexistent symbol MGEODEGX1
.config:117:warning: trying to assign nonexistent symbol MCYRIXIII
.config:118:warning: trying to assign nonexistent symbol MVIAC3_2
.config:119:warning: trying to assign nonexistent symbol X86_GENERIC
.config:121:warning: trying to assign nonexistent symbol X86_XADD
.config:125:warning: trying to assign nonexistent symbol X86_WP_WORKS_OK
.config:126:warning: trying to assign nonexistent symbol X86_INVLPG
.config:127:warning: trying to assign nonexistent symbol X86_BSWAP
.config:128:warning: trying to assign nonexistent symbol X86_POPAD_OK
.config:129:warning: trying to assign nonexistent symbol X86_CMPXCHG64
.config:131:warning: trying to assign nonexistent symbol X86_INTEL_USERCOPY
.config:132:warning: trying to assign nonexistent symbol X86_USE_PPRO_CHECKSUM
.config:140:warning: trying to assign nonexistent symbol X86_UP_APIC
.config:141:warning: trying to assign nonexistent symbol X86_UP_IOAPIC
.config:145:warning: trying to assign nonexistent symbol X86_MCE_NONFATAL
.config:146:warning: trying to assign nonexistent symbol X86_MCE_P4THERMAL
.config:147:warning: trying to assign nonexistent symbol TOSHIBA
.config:148:warning: trying to assign nonexistent symbol I8K
.config:149:warning: trying to assign nonexistent symbol X86_REBOOTFIXUPS
.config:160:warning: trying to assign nonexistent symbol NOHIGHMEM
.config:161:warning: trying to assign nonexistent symbol HIGHMEM4G
.config:174:warning: trying to assign nonexistent symbol REGPARM
.config:220:warning: trying to assign nonexistent symbol APM
.config:231:warning: trying to assign nonexistent symbol PCI_GOBIOS
.config:232:warning: trying to assign nonexistent symbol PCI_GOMMCONFIG
.config:233:warning: trying to assign nonexistent symbol PCI_GODIRECT
.config:234:warning: trying to assign nonexistent symbol PCI_GOANY
.config:1405:warning: trying to assign nonexistent symbol X86_FIND_SMP_CONFIG
.config:1406:warning: trying to assign nonexistent symbol X86_MPPARSE
.config:1459:warning: trying to assign nonexistent symbol X86_BIOS_REBOOT

-- 
Bo Andresen
-- 
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