[GIT PULL] EFI urgent fix

[Matt Fleming]

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

----------------------------------------------------------------
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(+)