From: Qing Zhang zhangqing@loongson.cn
[ Upstream commit 0246d0aaf0a634a65135050011767b56ba351a8f ]
The hardware monitoring points for instruction fetching and load/store operations need to align 4 bytes and 1/2/4/8 bytes respectively.
Reported-by: Colin King colin.i.king@gmail.com Signed-off-by: Qing Zhang zhangqing@loongson.cn Signed-off-by: Huacai Chen chenhuacai@loongson.cn Signed-off-by: Sasha Levin sashal@kernel.org --- arch/loongarch/kernel/hw_breakpoint.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/loongarch/kernel/hw_breakpoint.c b/arch/loongarch/kernel/hw_breakpoint.c index 2406c95b34cc4..021b59c248fac 100644 --- a/arch/loongarch/kernel/hw_breakpoint.c +++ b/arch/loongarch/kernel/hw_breakpoint.c @@ -396,6 +396,8 @@ int hw_breakpoint_arch_parse(struct perf_event *bp,
if (hw->ctrl.type != LOONGARCH_BREAKPOINT_EXECUTE) alignment_mask = 0x7; + else + alignment_mask = 0x3; offset = hw->address & alignment_mask;
hw->address &= ~alignment_mask;