Re: x86_64 segfault error codes

[Dave]

On 12/14/05, Andi Kleen <ak@xxxxxxx> wrote:
> On Wed, Dec 14, 2005 at 12:24:42PM -0700, Dave wrote:
> > Ah ok, thx! Looks like the comment in mm/fault.c is wrong then.... It
> > says bit 3 is instruction fetch and no mention of bit 4.
>
> Don't know what kernel you're looking at, but 2.6.15rc5 has
>
>  *      bit 0 == 0 means no page found, 1 means protection fault
>  *      bit 1 == 0 means read, 1 means write
>  *      bit 2 == 0 means kernel, 1 means user-mode
>  *      bit 3 == 1 means use of reserved bit detected
>  *      bit 4 == 1 means fault was an instruction fetch

Ah sorry. Was looking at 2.6.14.

--
-= Dave =-
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