Re: [GIT PULL] EFI changes for v4.4

[Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>]

* Matt Fleming <matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org> wrote:

> Folks, please pull the following bugfix from Sai which prevents a
> kernel panic when booting an EFI machine with CONFIG_DEBUG_VIRTUAL
> enabled.
> 
> This bug was reported last year by Dave Hansen,
> 
>   https://lkml.kernel.org/r/5462999A.7090706-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org
> 
> and since nobody else has reported it, and given that it's only
> triggerable with a debug config option, I figured this should be
> targeted at v4.4.
> 
> The following changes since commit 0f96a99dab366333439e110d6ad253bc7c557c09:
> 
>   efi: Add "efi_fake_mem" boot option (2015-10-12 14:20:09 +0100)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi.git tags/efi-next
> 
> for you to fetch changes up to 2c66e24d75d424919c42288b418d2e593fa818b1:
> 
>   x86/efi: Fix kernel panic when CONFIG_DEBUG_VIRTUAL is enabled (2015-10-25 10:22:25 +0000)
> 
> ----------------------------------------------------------------
>  * Fix a kernel panic by not passing EFI virtual mapping addresses to
>    __pa() in the x86 pageattr code. Since these virtual addreses are
>   not part of the direct mapping or kernel text mapping, passing them
>   to __pa() will trigger a BUG_ON() when CONFIG_DEBUG_VIRTUAL is
>   enabled - Sai Praneeth Prakhya
> 
> ----------------------------------------------------------------
> Sai Praneeth (1):
>       x86/efi: Fix kernel panic when CONFIG_DEBUG_VIRTUAL is enabled
> 
>  arch/x86/mm/pageattr.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)

Pulled, thanks Matt!

	Ingo