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| H A D | user-exec.c | db17d2cdb1a10e6fa8aa02de167546c17c893c3c Tue Aug 03 22:16:06 UTC 2021 Ilya Leoshkevich <iii@linux.ibm.com> accel/tcg/user-exec: Fix read-modify-write of code on s390 hosts
x86_64 dotnet/runtime uses cmpxchg for code patching. When running it
under s390x qemu-linux user, cpu_signal_handler() does not recognize
this as a write and does not restore PAGE_WRITE cleared by
tb_page_add(), incorrectly forwarding the signal to the guest code.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210803221606.150103-1-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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