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 <[e-mail]>
Signed-off-by: Matt Fleming <[e-mail]>
Acked-by: Will Deacon <[e-mail]>
Cc: Ard Biesheuvel <[e-mail]>
Cc: Borislav Petkov <[e-mail]>
Cc: Catalin Marinas <[e-mail]>
Cc: Dan Williams <[e-mail]>
Cc: Leif Lindholm <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Russell King <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Ingo Molnar <[e-mail]>

arch/arm64/include/asm/efi.h

···
 #include <asm/io.h>
 #include <asm/mmu_context.h>
 #include <asm/neon.h>
+#include <asm/ptrace.h>
 #include <asm/tlbflush.h>
 
 #ifdef CONFIG_EFI
···
 	efi_virtmap_unload();						\
 	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 */