linux-kernel - [PATCHv3 2/5] arm64/efi: enable runtime call flag checking

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Date:	Mon, 25 Apr 2016 14:46:31 +0100
From:	Mark Rutland <mark.rutland@....com>
To:	linux-efi@...r.kernel.org
Cc:	ard.biesheuvel@...aro.org, catalin.marinas@....com, hpa@...or.com,
	leif.lindholm@...aro.org, linux-arm-kernel@...ts.infradead.org,
	linux@....linux.org.uk, linux-kernel@...r.kernel.org,
	mark.rutland@....com, matt@...eblueprint.co.uk, mingo@...hat.com,
	tglx@...utronix.de, will.deacon@....com
Subject: [PATCHv3 2/5] 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@....com>
Cc: Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Leif Lindholm <leif.lindholm@...aro.org>
Cc: Matt Fleming <matt@...eblueprint.co.uk>
Cc: Will Deacon <will.deacon@....com>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-efi@...r.kernel.org
---
 arch/arm64/include/asm/efi.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h
index f4f71224..b44603e 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
@@ -33,6 +34,8 @@ 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 */
 
 /*
-- 
1.9.1