From: Joerg Roedel
Force a page-fault on any further accesses to the GHCB page when they
shouldn't happen anymore. This will catch the bugs where a #VC exception
is raised when no one is expected anymore.
Signed-off-by: Joerg Roedel
---
arch/x86/boot/compressed/ident_map_64.c | 23
On Tue, Apr 28, 2020 at 05:16:34PM +0200, Joerg Roedel wrote:
> @@ -302,9 +313,13 @@ void do_boot_page_fault(struct pt_regs *regs, unsigned
> long error_code)
>* - User faults
>* - Reserved bits set
>*/
> - if (error_code & (X86_PF_PROT | X86_PF_USER | X86_PF_
On Wed, May 13, 2020 at 01:13:40PM +0200, Borislav Petkov wrote:
> On Tue, Apr 28, 2020 at 05:16:34PM +0200, Joerg Roedel wrote:
> > @@ -302,9 +313,13 @@ void do_boot_page_fault(struct pt_regs *regs, unsigned
> > long error_code)
> > * - User faults
> > * - Reserved bits set
>
On Wed, May 13, 2020 at 01:30:11PM +0200, Joerg Roedel wrote:
> Yeah, I had this this way in v2, but changed it upon you request[1] :)
Yeah, I was wondering why this isn't a separate function - you like them
so much. :-P
> [1] https://lore.kernel.org/lkml/20200402114941.ga9...@zn.tnic/
But that
On Wed, May 13, 2020 at 01:46:33PM +0200, Borislav Petkov wrote:
> On Wed, May 13, 2020 at 01:30:11PM +0200, Joerg Roedel wrote:
> > Yeah, I had this this way in v2, but changed it upon you request[1] :)
>
> Yeah, I was wondering why this isn't a separate function - you like them
> so much. :-P
>
