On 3/27/06, Graham Murray <[EMAIL PROTECTED]> wrote: > "Richard Fish" <[EMAIL PROTECTED]> writes: > > > But I agree that PAE is the necessary option if your processor is too > > old and does not support the NX bit. Sorry I did not mention that. > > Even if the processor supports the NX bit, in arch/i386/mm/init.c it > looks as though NX is only enabled if PAE is configured (which > requires setting 64G highmem)
Hmm, yep, I didn't read enough source. Actually the best indicator that CONFIG_X86_PAE is necessary is from include/asm-i386/pgtable.h, which defines _PAGE_NX as: #ifdef CONFIG_X86_PAE #define _PAGE_NX (1ULL<<_PAGE_BIT_NX) #else #define _PAGE_NX 0 #endif Crow eaten with apologies to all. -Richard > -- > gentoo-user@gentoo.org mailing list > > -- gentoo-user@gentoo.org mailing list
