Commit ee6cab5d authored Apr 25, 2016 by Mark Rutland Committed by Ingo Molnar Apr 28, 2016

arm64/efi: Enable runtime call flag checking



Define ARCH_EFI_IRQ_FLAGS_MASK for arm64, which will enable the generic
runtime wrapper code to detect when firmware erroneously modifies flags
over a runtime services function call.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/1461614832-17633-38-git-send-email-matt@codeblueprint.co.uk


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent 1d04ba17

arch/arm64/include/asm/efi.h

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -4,6 +4,7 @@
	#include <asm/io.h>		#include <asm/io.h>
	#include <asm/mmu_context.h>		#include <asm/mmu_context.h>
	#include <asm/neon.h>		#include <asm/neon.h>
			#include <asm/ptrace.h>
	#include <asm/tlbflush.h>		#include <asm/tlbflush.h>

	#ifdef CONFIG_EFI		#ifdef CONFIG_EFI
	@@ -35,6 +36,8 @@ int efi_create_mapping(struct mm_struct mm, efi_memory_desc_t md);
	kernel_neon_end(); \		kernel_neon_end(); \
	})		})

			#define ARCH_EFI_IRQ_FLAGS_MASK (PSR_D_BIT \| PSR_A_BIT \| PSR_I_BIT \| PSR_F_BIT)

	/* arch specific definitions used by the stub code */		/* arch specific definitions used by the stub code */

	/*		/*