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