On Thu, Jan 21, 2021 at 7:15 AM Andreas K. Hüttel <dilfri...@gentoo.org> wrote: > > Am Mittwoch, 20. Januar 2021, 22:12:30 EET schrieb Andreas K. Hüttel: > > > This patch just passes the waitid status directly back to the guest. > > > > This works at least as well as the previous versions, so ++ from me. > > > > Will do more testing over the next days to see if it maybe also improves the > > additional oddities I observed. > > > > So the patch is good since it clearly resolves the linked bug. > > However, something else is still broken (maybe related; unchanged compared to > the previous patch version). I keep seeing hanging "qemu-riscv32 /bin/bash > ..." processes using 100% cpu. If I attach strace (on the host arch x86-64) to > qemu, I see an infinite loop: > > waitid(P_ALL, -1, {}, WNOHANG|WEXITED, NULL) = 0 > rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], NULL, 8) = 0 > rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], NULL, 8) = 0 > rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0 > rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], NULL, 8) = 0 > rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], NULL, 8) = 0 > rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0 > waitid(P_ALL, -1, {}, WNOHANG|WEXITED, NULL) = 0 > rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], NULL, 8) = 0 > rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], NULL, 8) = 0 > rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0 > rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], NULL, 8) = 0 > rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], NULL, 8) = 0 > rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0 > ... > > Unfortunately I do not have a simple reproducer. This is somewhere in the > middle of our build system... > > Otherwise, I can re-build glibc, gcc, binutils, make in the qemu chroot > without obvious problems, with one striking strange detail - "make" refuses to > run more than one concurrent process (even with MAKEOPTS="-j9"). Something is > off there.
Ping! Even though it seems like there are still issues with RV32, this is a step in the right direction. Alistair > > -- > Andreas K. Hüttel > dilfri...@gentoo.org > Gentoo Linux developer > (council, qa, toolchain, base-system, perl, libreoffice)