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Subject[GIT PULL] EFI changes for v4.4
Date
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@intel.com

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(-)


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