On Sat, 2014-01-11 at 21:49 +0100, Borislav Petkov wrote:
> From: Borislav Petkov <[email protected]>
>
> With reusing the ->trampoline_pgd page table for mapping EFI regions in
> order to use them after having switched to EFI virtual mode, it is very
> useful to be able to dump aforementioned page table in dmesg. This adds
> that functionality through the walk_pgd_level() interface which can be
> called from somewhere else.
[]
> diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
[]
> @@ -306,6 +326,11 @@ static void walk_pgd_level(struct seq_file *m)
> int i;
> struct pg_state st;
>
> + if (pgd) {
> + start = pgd;
> + dump_to_dmesg = true;
> + }
else
dump_to_dmesg = false;
?
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