Commit-ID: 3fa1cabbc3b61224ef33d3ca4a1a96998529bc68 Gitweb: http://git.kernel.org/tip/3fa1cabbc3b61224ef33d3ca4a1a96998529bc68 Author: Andy Lutomirski <l...@kernel.org> AuthorDate: Wed, 22 Mar 2017 14:32:31 -0700 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Thu, 23 Mar 2017 08:25:07 +0100
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 <l...@kernel.org> Cc: Ard Biesheuvel <ard.biesheu...@linaro.org> Cc: Boris Ostrovsky <boris.ostrov...@oracle.com> Cc: Borislav Petkov <b...@alien8.de> Cc: Brian Gerst <brge...@gmail.com> Cc: Denys Vlasenko <dvlas...@redhat.com> Cc: H. Peter Anvin <h...@zytor.com> Cc: Josh Poimboeuf <jpoim...@redhat.com> Cc: Juergen Gross <jgr...@suse.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Matt Fleming <m...@codeblueprint.co.uk> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Garnier <thgar...@google.com> Cc: Thomas Gleixner <t...@linutronix.de> Cc: linux-...@vger.kernel.org Link: http://lkml.kernel.org/r/5ba1d3ffca85e1a5b3ac99265ebe55df4cf0dbe4.1490218061.git.l...@kernel.org Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/x86/platform/efi/efi_32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c index 9500711..3481268 100644 --- a/arch/x86/platform/efi/efi_32.c +++ b/arch/x86/platform/efi/efi_32.c @@ -68,7 +68,7 @@ pgd_t * __init efi_call_phys_prolog(void) load_cr3(initial_page_table); __flush_tlb_all(); - gdt_descr.address = __pa(get_cpu_gdt_rw(0)); + gdt_descr.address = get_cpu_gdt_paddr(0); gdt_descr.size = GDT_SIZE - 1; load_gdt(&gdt_descr);
