From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753477AbdCVVdu (ORCPT ); Wed, 22 Mar 2017 17:33:50 -0400 Received: from mail.kernel.org ([198.145.29.136]:42596 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751506AbdCVVdF (ORCPT ); Wed, 22 Mar 2017 17:33:05 -0400 From: Andy Lutomirski To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, Borislav Petkov , Boris Ostrovsky , Juergen Gross , Thomas Garnier , Andy Lutomirski , Matt Fleming , Ard Biesheuvel , linux-efi@vger.kernel.org Subject: [PATCH 3/7] x86/efi/32: Fix EFI on systems where the percpu GDT is virtually mapped Date: Wed, 22 Mar 2017 14:32:31 -0700 Message-Id: <5ba1d3ffca85e1a5b3ac99265ebe55df4cf0dbe4.1490218061.git.luto@kernel.org> X-Mailer: git-send-email 2.9.3 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org __pa on a percpu pointer is invalid. This bug appears to go *waaay* back, and I guess it's just never been triggered. Cc: Matt Fleming Cc: Ard Biesheuvel Cc: linux-efi@vger.kernel.org Signed-off-by: Andy Lutomirski --- 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 950071171436..3481268da3d0 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); -- 2.9.3