[GIT PULL] EFI changes for v4.4
From: Matt Fleming
Date: Sun Oct 25 2015 - 06:49:17 EST
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@xxxxxxxxx
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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