diff options
| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2024-02-29 11:34:31 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2024-03-01 20:36:51 +0300 |
| commit | 9d6b6789c8787fb1183d176a00569fb9b192243d (patch) | |
| tree | 42d5335dbd1d767e36a5d7c6455e84274091f30b /arch/arm64/kernel | |
| parent | 622442666dcca0f273fd8b1adf80cd1893ed88cf (diff) | |
| download | linux-9d6b6789c8787fb1183d176a00569fb9b192243d.tar.xz | |
arm64/hw_breakpoint: Directly use ESR_ELx_WNR for an watchpoint exception
Let's use existing ISS encoding for an watchpoint exception i.e ESR_ELx_WNR
This represents an instruction's either writing to or reading from a memory
location during an watchpoint exception. While here this drops non-standard
macro AARCH64_ESR_ACCESS_MASK.
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20240229083431.356578-1-anshuman.khandual@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel')
| -rw-r--r-- | arch/arm64/kernel/hw_breakpoint.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_breakpoint.c index 35225632d70a..2f5755192c2b 100644 --- a/arch/arm64/kernel/hw_breakpoint.c +++ b/arch/arm64/kernel/hw_breakpoint.c @@ -21,6 +21,7 @@ #include <asm/current.h> #include <asm/debug-monitors.h> +#include <asm/esr.h> #include <asm/hw_breakpoint.h> #include <asm/traps.h> #include <asm/cputype.h> @@ -779,7 +780,7 @@ static int watchpoint_handler(unsigned long addr, unsigned long esr, * Check that the access type matches. * 0 => load, otherwise => store */ - access = (esr & AARCH64_ESR_ACCESS_MASK) ? HW_BREAKPOINT_W : + access = (esr & ESR_ELx_WNR) ? HW_BREAKPOINT_W : HW_BREAKPOINT_R; if (!(access & hw_breakpoint_type(wp))) continue; |