efi: Process the MEMATTR table only if EFI_MEMMAP is enabled
authorDaniel Kiper <daniel.kiper@oracle.com>
Thu, 22 Jun 2017 10:51:36 +0000 (12:51 +0200)
committerIngo Molnar <mingo@kernel.org>
Fri, 23 Jun 2017 09:11:02 +0000 (11:11 +0200)
commit457ea3f7e97881f937136ce0ba1f29f82b9abdb0
tree0d5e14635e148ff402d0f53a0c99bc4e25095c6c
parentbb817bef3b1989a9cdb40362cfb8d2aa224ac1bc
efi: Process the MEMATTR table only if EFI_MEMMAP is enabled

Otherwise e.g. Xen dom0 on x86_64 EFI platforms crashes.

In theory we can check EFI_PARAVIRT too, however,
EFI_MEMMAP looks more targeted and covers more cases.

Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: andrew.cooper3@citrix.com
Cc: boris.ostrovsky@oracle.com
Cc: jgross@suse.com
Cc: linux-efi@vger.kernel.org
Cc: matt@codeblueprint.co.uk
Cc: stable@vger.kernel.org
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/1498128697-12943-2-git-send-email-daniel.kiper@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
drivers/firmware/efi/efi.c