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Diffstat (limited to 'arch/riscv/kernel/traps_misaligned.c')
-rw-r--r--arch/riscv/kernel/traps_misaligned.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/riscv/kernel/traps_misaligned.c b/arch/riscv/kernel/traps_misaligned.c
index 041fd2dbd955..b5fb1ff078e3 100644
--- a/arch/riscv/kernel/traps_misaligned.c
+++ b/arch/riscv/kernel/traps_misaligned.c
@@ -396,6 +396,9 @@ union reg_data {
u64 data_u64;
};
+/* sysctl hooks */
+int unaligned_enabled __read_mostly = 1; /* Enabled by default */
+
int handle_misaligned_load(struct pt_regs *regs)
{
union reg_data val;
@@ -406,6 +409,9 @@ int handle_misaligned_load(struct pt_regs *regs)
perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, addr);
+ if (!unaligned_enabled)
+ return -1;
+
if (get_insn(regs, epc, &insn))
return -1;
@@ -502,6 +508,9 @@ int handle_misaligned_store(struct pt_regs *regs)
perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, addr);
+ if (!unaligned_enabled)
+ return -1;
+
if (get_insn(regs, epc, &insn))
return -1;