On 2026/9/18 下午6:37, SignKirigami wrote:
Recognize LSX/LASX stores in the LoongArch host signal handler to fix
internal QEMU crashes when RISC-V vector stores hit write-protected code
pages through host memcpy.
Signed-off-by: Felix Yan <[email protected]>
Signed-off-by: SignKirigami <[email protected]>
---
linux-user/include/host/loongarch64/host-signal.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/linux-user/include/host/loongarch64/host-signal.h
b/linux-user/include/host/loongarch64/host-signal.h
index d33c3fc03e..eb4308cf09 100644
--- a/linux-user/include/host/loongarch64/host-signal.h
+++ b/linux-user/include/host/loongarch64/host-signal.h
@@ -61,6 +61,10 @@ static inline bool host_signal_write(siginfo_t *info,
host_sigcontext *uc)
return true;
}
break;
+ case 0b001011: /* v{ld,st}, xv{ld,st} */
+ return (insn >> 22) & 1;
+ case 0b001100: /* v{ldrepl,stelm}, xv{ldrepl,stelm} */
+ return (insn >> 24) & 1;
case 0b001110: /* indexed, atomic, bounds-checking memory operations */
switch ((insn >> 15) & 0b11111111111) {
case 0b00000100000: /* stx.b */
@@ -69,6 +73,8 @@ static inline bool host_signal_write(siginfo_t *info,
host_sigcontext *uc)
case 0b00000111000: /* stx.d */
case 0b00001110000: /* fstx.s */
case 0b00001111000: /* fstx.d */
+ case 0b00010001000: /* vstx */
+ case 0b00010011000: /* xvstx */
case 0b00011101100: /* fstgt.s */
case 0b00011101101: /* fstgt.d */
case 0b00011101110: /* fstle.s */
Reviewed-by: Bibo Mao <[email protected]>
