Messages in this thread Patch in this message | | | From | Mark Rutland <> | Subject | [PATCHv3 4/5] x86/efi: enable runtime call flag checking | Date | Mon, 25 Apr 2016 14:46:33 +0100 |
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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 <mark.rutland@arm.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Cc: linux-kernel@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 <asm/fpu/api.h> #include <asm/pgtable.h> +#include <asm/processor-flags.h> #include <asm/tlb.h> /* @@ -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
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