From: Alexander Kapshuk <alexander.kapshuk@gmail.com>
To: gentoo-user@lists.gentoo.org
Cc: Alan McKinnon <alan.mckinnon@gmail.com>
Subject: Re: [gentoo-user] re: NX (Execute Disable) protection cannot be enabled: non-PAE kernel! [dmesg]
Date: Tue, 08 Oct 2013 20:04:16 +0300 [thread overview]
Message-ID: <52543B10.10201@gmail.com> (raw)
In-Reply-To: <52530E8C.1040701@gmail.com>
On 10/07/2013 10:42 PM, Alan McKinnon wrote:
> On 07/10/2013 21:28, Alexander Kapshuk wrote:
>> Is the message below I should do something about?
>>
>> box0=; dmesg|grep -i PAE
>> [ 0.000000] Notice: NX (Execute Disable) protection cannot be
>> enabled: non-PAE kernel!
>>
>>
>> My CPU seems to have support for it.
>> box0=; grep pae /proc/cpuinfo
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
>> cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
>> constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl
>> est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
>> cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
>> constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl
>> est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm
>>
>> But not my kernel, as far as I can tell.
>> box0=; uname -a
>> Linux box0 3.10.7-gentoo-r1 #1 SMP Sat Oct 5 23:57:58 EEST 2013 i686
>> Intel(R) Pentium(R) Dual CPU T3400 @ 2.16GHz GenuineIntel GNU/Linux
>>
>> box0=; grep -i pae .config
>> box0=; echo $?
>> 1
>>
>> Thanks.
>>
>>
>
> Symbol: ARM_LPAE [=ARM_LPAE]
> Type : unknown
>
> Symbol: X86_PAE [=n]
> Type : boolean
> Prompt: PAE (Physical Address Extension) Support
> Location:
> (1) -> Processor type and features
> Defined at arch/x86/Kconfig:1213
> Depends on: X86_32 [=n] && !HIGHMEM4G [=n]
> Selected by: HIGHMEM64G [=n] && <choice> && !M486 [=n]
>
>
Thanks. I did a little research into the whole PAE business, as
obviously my knowledge of the matter in question was limited.
If I understood it correctly, PAE is a method that allows 32-bit kernels
access 4 or more Gb of RAM, which is normally the domain of 64-bit kernels.
Seeing I've got 3 Gb of RAM, I arrived at the conclusion I don't need
PAE enabled, do I?
box0=; sed 1q /proc/meminfo
MemTotal: 3107668 kB
Thanks.
next prev parent reply other threads:[~2013-10-08 17:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-07 19:28 [gentoo-user] re: NX (Execute Disable) protection cannot be enabled: non-PAE kernel! [dmesg] Alexander Kapshuk
2013-10-07 19:42 ` Alan McKinnon
2013-10-08 17:04 ` Alexander Kapshuk [this message]
2013-10-08 21:20 ` Alan McKinnon
2013-10-09 2:17 ` gottlieb
2013-10-09 18:56 ` Alexander Kapshuk
2013-10-09 21:11 ` gottlieb
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=52543B10.10201@gmail.com \
--to=alexander.kapshuk@gmail.com \
--cc=alan.mckinnon@gmail.com \
--cc=gentoo-user@lists.gentoo.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox