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[PATCH v5 59/67] accel/tcg: Report unaligned load/store for user-only
From: |
Richard Henderson |
Subject: |
[PATCH v5 59/67] accel/tcg: Report unaligned load/store for user-only |
Date: |
Thu, 14 Oct 2021 21:10:45 -0700 |
Use the new cpu_loop_exit_sigbus for cpu_mmu_lookup.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
accel/tcg/user-exec.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 92cbffd7c6..7d50dd54f6 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -220,9 +220,14 @@ static void validate_memop(MemOpIdx oi, MemOp expected)
static void *cpu_mmu_lookup(CPUArchState *env, target_ulong addr,
MemOpIdx oi, uintptr_t ra, MMUAccessType type)
{
+ MemOp mop = get_memop(oi);
+ int a_bits = get_alignment_bits(mop);
void *ret;
- /* TODO: Enforce guest required alignment. */
+ /* Enforce guest required alignment. */
+ if (unlikely(addr & ((1 << a_bits) - 1))) {
+ cpu_loop_exit_sigbus(env_cpu(env), addr, type, ra);
+ }
ret = g2h(env_cpu(env), addr);
set_helper_retaddr(ra);
--
2.25.1
- [PATCH v5 58/67] accel/tcg: Report unaligned atomics for user-only, (continued)
- [PATCH v5 58/67] accel/tcg: Report unaligned atomics for user-only, Richard Henderson, 2021/10/15
- [PATCH v5 61/67] linux-user: Handle BUS_ADRALN in host_signal_handler, Richard Henderson, 2021/10/15
- [PATCH v5 64/67] linux-user: Add code for PR_GET/SET_UNALIGN, Richard Henderson, 2021/10/15
- [PATCH v5 67/67] target/sh4: Implement prctl_unalign_sigbus, Richard Henderson, 2021/10/15
- [PATCH v5 63/67] linux-user: Disable more prctl subcodes, Richard Henderson, 2021/10/15
- [PATCH v5 46/67] target/arm: Implement arm_cpu_record_sigbus, Richard Henderson, 2021/10/15
- [PATCH v5 56/67] target/sparc: Split out build_sfsr, Richard Henderson, 2021/10/15
- [PATCH v5 59/67] accel/tcg: Report unaligned load/store for user-only,
Richard Henderson <=
- [PATCH v5 65/67] target/alpha: Implement prctl_unalign_sigbus, Richard Henderson, 2021/10/15
- [PATCH v5 62/67] linux-user: Split out do_prctl and subroutines, Richard Henderson, 2021/10/15
- [PATCH v5 66/67] target/hppa: Implement prctl_unalign_sigbus, Richard Henderson, 2021/10/15