| 1 |
On 10/07/2013 10:42 PM, Alan McKinnon wrote: |
| 2 |
> On 07/10/2013 21:28, Alexander Kapshuk wrote: |
| 3 |
>> Is the message below I should do something about? |
| 4 |
>> |
| 5 |
>> box0=; dmesg|grep -i PAE |
| 6 |
>> [ 0.000000] Notice: NX (Execute Disable) protection cannot be |
| 7 |
>> enabled: non-PAE kernel! |
| 8 |
>> |
| 9 |
>> |
| 10 |
>> My CPU seems to have support for it. |
| 11 |
>> box0=; grep pae /proc/cpuinfo |
| 12 |
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca |
| 13 |
>> cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm |
| 14 |
>> constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl |
| 15 |
>> est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm |
| 16 |
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca |
| 17 |
>> cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm |
| 18 |
>> constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl |
| 19 |
>> est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm |
| 20 |
>> |
| 21 |
>> But not my kernel, as far as I can tell. |
| 22 |
>> box0=; uname -a |
| 23 |
>> Linux box0 3.10.7-gentoo-r1 #1 SMP Sat Oct 5 23:57:58 EEST 2013 i686 |
| 24 |
>> Intel(R) Pentium(R) Dual CPU T3400 @ 2.16GHz GenuineIntel GNU/Linux |
| 25 |
>> |
| 26 |
>> box0=; grep -i pae .config |
| 27 |
>> box0=; echo $? |
| 28 |
>> 1 |
| 29 |
>> |
| 30 |
>> Thanks. |
| 31 |
>> |
| 32 |
>> |
| 33 |
> |
| 34 |
> Symbol: ARM_LPAE [=ARM_LPAE] |
| 35 |
> Type : unknown |
| 36 |
> |
| 37 |
> Symbol: X86_PAE [=n] |
| 38 |
> Type : boolean |
| 39 |
> Prompt: PAE (Physical Address Extension) Support |
| 40 |
> Location: |
| 41 |
> (1) -> Processor type and features |
| 42 |
> Defined at arch/x86/Kconfig:1213 |
| 43 |
> Depends on: X86_32 [=n] && !HIGHMEM4G [=n] |
| 44 |
> Selected by: HIGHMEM64G [=n] && <choice> && !M486 [=n] |
| 45 |
> |
| 46 |
> |
| 47 |
Thanks. I did a little research into the whole PAE business, as |
| 48 |
obviously my knowledge of the matter in question was limited. |
| 49 |
|
| 50 |
If I understood it correctly, PAE is a method that allows 32-bit kernels |
| 51 |
access 4 or more Gb of RAM, which is normally the domain of 64-bit kernels. |
| 52 |
|
| 53 |
Seeing I've got 3 Gb of RAM, I arrived at the conclusion I don't need |
| 54 |
PAE enabled, do I? |
| 55 |
|
| 56 |
box0=; sed 1q /proc/meminfo |
| 57 |
MemTotal: 3107668 kB |
| 58 |
|
| 59 |
Thanks. |
Archives