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[37/40] arm64/efi: Enable runtime call flag checking

Message ID 1461614832-17633-38-git-send-email-matt@codeblueprint.co.uk
State New
Headers show

Commit Message

Matt Fleming April 25, 2016, 8:07 p.m. UTC 
From: Mark Rutland <mark.rutland@arm.com>


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>

Acked-by: Will Deacon <will.deacon@arm.com>

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-efi@vger.kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>

---
 arch/arm64/include/asm/efi.h | 3 +++
 1 file changed, 3 insertions(+)

-- 
2.7.3
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Patch

diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h
index cfd4ae2e46c0..622db3c6474e 100644
--- a/arch/arm64/include/asm/efi.h
+++ b/arch/arm64/include/asm/efi.h
@@ -4,6 +4,7 @@ 
 #include <asm/io.h>
 #include <asm/mmu_context.h>
 #include <asm/neon.h>
+#include <asm/ptrace.h>
 #include <asm/tlbflush.h>
 
 #ifdef CONFIG_EFI
@@ -35,6 +36,8 @@  int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
 	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 */
 
 /*