[Crash-utility] Value of
Dave Anderson
anderson at redhat.com
Thu Apr 30 13:03:17 UTC 2015
----- Original Message -----
>
>
> Hi Dave
>
> I was looking in the file arm64.c at function arm64_translate_pte and saw the
> line:
>
> if (!page_present && (pte & PTE_FILE)) {
>
> I also saw that there are two versions of the value PTE_FILE (see also
> defs.h) and the following code is included in arm64.c in arm64_init :
>
> if (THIS_KERNEL_VERSION >= LINUX(3,10,0)) {
>
> machdep->machspec->pte_protnone = PTE_PROT_NONE_3_10;
>
> machdep->machspec->pte_file = PTE_FILE_3_10;
>
> } else {
>
> machdep->machspec->pte_protnone = PTE_PROT_NONE;
>
> machdep->machspec->pte_file = PTE_FILE;
>
> }
>
> So should not the first mentioned line be changed to:
>
> if (!page_present && (pte & machdep->machspec->pte_file)) {
>
> Jan
It was in a state of flux when that code was originally put in place,
and I see now that it's changed yet again, where PTE_FILE and PTE_PROT_NONE
don't even exist anymore upstream.
So it certainly needs revisiting...
Dave
More information about the Crash-utility
mailing list