[GIT PULL] EFI urgent fix
From: Matt Fleming
Date: Fri Jan 27 2017 - 17:07:25 EST
Folks, please pull the below fix from Jiri which fixes a triple fault
affecting the Lenovo Yogas since v4.8.
The following changes since commit 7a308bb3016f57e5be11a677d15b821536419d36:
Linux 4.10-rc5 (2017-01-22 12:54:15 -0800)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git tags/efi-urgent
for you to fetch changes up to 090abfc9dc7faf3f84799f956158c8c3af149a81:
x86/efi: Always map first physical page into EFI pagetables (2017-01-27 20:20:01 +0000)
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* Fix triple fault on boot affecting Lenovo Yoga. The firmware on
these machines will write to the zero page even though it's marked
EFI_CONVENTIONAL_MEMORY, so we must ensure it's mapped in the EFI
page tables - Jiri Kosina
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Jiri Kosina (1):
x86/efi: Always map first physical page into EFI pagetables
arch/x86/platform/efi/efi_64.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)