From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.rutland@arm.com (Mark Rutland) Date: Mon, 25 Apr 2016 14:46:33 +0100 Subject: [PATCHv3 4/5] x86/efi: enable runtime call flag checking In-Reply-To: <1461591994-14918-1-git-send-email-mark.rutland@arm.com> References: <1461591994-14918-1-git-send-email-mark.rutland@arm.com> Message-ID: <1461591994-14918-5-git-send-email-mark.rutland@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Define ARCH_EFI_IRQ_FLAGS_MASK for x86, which will enable the generic runtime wrapper code to detect when firmware erroneously modifies flags over a runtime services function call. For x86 (both 32-bit and 64-bit), we only need check the interrupt flag. Signed-off-by: Mark Rutland Cc: Ard Biesheuvel Cc: H. Peter Anvin Cc: Ingo Molnar Cc: Matt Fleming Cc: Thomas Gleixner Cc: linux-efi at vger.kernel.org Cc: linux-kernel at vger.kernel.org --- arch/x86/include/asm/efi.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index 34bd38b..c6d8ad1 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -3,6 +3,7 @@ #include #include +#include #include /* @@ -28,8 +29,9 @@ #define MAX_CMDLINE_ADDRESS UINT_MAX -#ifdef CONFIG_X86_32 +#define ARCH_EFI_IRQ_FLAGS_MASK X86_EFLAGS_IF +#ifdef CONFIG_X86_32 extern unsigned long asmlinkage efi_call_phys(void *, ...); -- 1.9.1