x86/efi/32: Fix EFI on systems where the per-cpu GDT is virtually mapped
authorAndy Lutomirski <luto@kernel.org>
Wed, 22 Mar 2017 21:32:31 +0000 (14:32 -0700)
committerIngo Molnar <mingo@kernel.org>
Thu, 23 Mar 2017 07:25:07 +0000 (08:25 +0100)
commit3fa1cabbc3b61224ef33d3ca4a1a96998529bc68
tree1c3f577abd26f62b9f1edb6b957465e719589200
parentaa4ea675528f3fa11e9663e5a32f55a81c34dcac
x86/efi/32: Fix EFI on systems where the per-cpu GDT is virtually mapped

__pa() on a per-cpu pointer is invalid.  This bug appears to go *waaay*
back, and I guess it's just never been triggered.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Garnier <thgarnie@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/5ba1d3ffca85e1a5b3ac99265ebe55df4cf0dbe4.1490218061.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/platform/efi/efi_32.c