diff options
| author | Catalin Marinas <catalin.marinas@arm.com> | 2014-04-06 23:04:12 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2014-05-09 15:47:47 +0100 |
| commit | 9141300a5884b57cea6d32c4e3fd16a337cfc99a (patch) | |
| tree | d717d0ae66c7458c922b885c689b9c192b0f4083 /arch/arm64/include | |
| parent | 6400111399e16a535231ebd76389c894ea1837ff (diff) | |
arm64: Provide read/write fault information in compat signal handlers
For AArch32, bit 11 (WnR) of the FSR/ESR register is set when the fault
was caused by a write access and applications like Qemu rely on such
information being provided in sigcontext. This patch introduces the
ESR_EL1 tracking for the arm64 kernel faults and sets bit 11 accordingly
in compat sigcontext.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/esr.h | 6 | ||||
| -rw-r--r-- | arch/arm64/include/asm/processor.h | 1 |
2 files changed, 5 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/esr.h b/arch/arm64/include/asm/esr.h index c4a7f940b38..72674f4c387 100644 --- a/arch/arm64/include/asm/esr.h +++ b/arch/arm64/include/asm/esr.h @@ -18,9 +18,11 @@ #ifndef __ASM_ESR_H #define __ASM_ESR_H -#define ESR_EL1_EC_SHIFT (26) -#define ESR_EL1_IL (1U << 25) +#define ESR_EL1_WRITE (1 << 6) +#define ESR_EL1_CM (1 << 8) +#define ESR_EL1_IL (1 << 25) +#define ESR_EL1_EC_SHIFT (26) #define ESR_EL1_EC_UNKNOWN (0x00) #define ESR_EL1_EC_WFI (0x01) #define ESR_EL1_EC_CP15_32 (0x03) diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index 45b20cd6cbc..34de2a8f7d9 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -79,6 +79,7 @@ struct thread_struct { unsigned long tp_value; struct fpsimd_state fpsimd_state; unsigned long fault_address; /* fault info */ + unsigned long fault_code; /* ESR_EL1 value */ struct debug_info debug; /* debugging */ }; |