On 8 November 2017 at 21:18, Richard Henderson <richard.hender...@linaro.org> wrote: > On 11/06/2017 07:33 PM, Peter Maydell wrote: >> For s390x, the address passed to a signal handler in the >> siginfo_t si_addr field is masked (in the kernel this is done in >> do_sigbus() and do_sigsegv() in arch/s390/mm/fault.c). Implement >> this architecture-specific oddity in linux-user. >> >> This is one of the issues described in >> https://bugs.launchpad.net/qemu/+bug/1705118 >> >> Signed-off-by: Peter Maydell <peter.mayd...@linaro.org> >> --- >> linux-user/main.c | 6 +++++- >> 1 file changed, 5 insertions(+), 1 deletion(-) > > Accurate, but really seems like a s390x kernel bug.
The kernel code goes out of its way to do the masking, so if it's a bug presumably it's a "retain back compat with some older bug" thing... thanks -- PMM
