* [PATCH] x86: use HW_BREAKPOINT_RW where possible
@ 2022-11-08 2:12 Changbin Du
0 siblings, 0 replies; only message in thread
From: Changbin Du @ 2022-11-08 2:12 UTC (permalink / raw)
To: Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen, x86
Cc: H. Peter Anvin, linux-kernel, hw.huiwang, Changbin Du
Use enum HW_BREAKPOINT_RW where possible instead of individual
(HW_BREAKPOINT_R | HW_BREAKPOINT_W).
Signed-off-by: Changbin Du <changbin.du@huawei.com>
---
arch/x86/kernel/hw_breakpoint.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c
index 668a4a6533d9..cccfb446ce80 100644
--- a/arch/x86/kernel/hw_breakpoint.c
+++ b/arch/x86/kernel/hw_breakpoint.c
@@ -213,7 +213,7 @@ int arch_bp_generic_fields(int x86_len, int x86_type,
*gen_type = HW_BREAKPOINT_W;
break;
case X86_BREAKPOINT_RW:
- *gen_type = HW_BREAKPOINT_W | HW_BREAKPOINT_R;
+ *gen_type = HW_BREAKPOINT_RW;
break;
default:
return -EINVAL;
@@ -347,7 +347,7 @@ static int arch_build_bp_info(struct perf_event *bp,
case HW_BREAKPOINT_W:
hw->type = X86_BREAKPOINT_WRITE;
break;
- case HW_BREAKPOINT_W | HW_BREAKPOINT_R:
+ case HW_BREAKPOINT_RW:
hw->type = X86_BREAKPOINT_RW;
break;
case HW_BREAKPOINT_X:
--
2.25.1
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