RE: [PATCH v3 0/4] linux-user: fix use of SIGRTMIN

[Taylor Simpson]

Tested-by: Taylor Simpson <address@hidden>

> -----Original Message-----
> From: Laurent Vivier <address@hidden>
> Sent: Wednesday, February 12, 2020 6:57 AM
> To: address@hidden
> Cc: Aleksandar Markovic <address@hidden>; Laurent Vivier
> <address@hidden>; Matus Kysel <address@hidden>;
> address@hidden; Riku Voipio <address@hidden>; Josh Kunz
> <address@hidden>; Taylor Simpson <address@hidden>; Peter Maydell
> <address@hidden>; Marlies Ruck <address@hidden>
> Subject: [PATCH v3 0/4] linux-user: fix use of SIGRTMIN
>
> This series fixes the problem of the first real-time signals already
> in use by the glibc that are not available for the target glibc.
>
> Instead of reverting the first and last real-time signals we rely on
> the value provided by the glibc (SIGRTMIN) to know the first available
> signal and we map all the signals from this value to SIGRTMAX on top
> of TARGET_SIGRTMIN. So the consequence is we have less available signals
> in the target (generally 2) but all seems fine as at least 30 signals are
> still available.
>
> This has been tested with Go (golang 1.10.1 linux/arm64, bionic) on x86_64
> fedora 31. We can avoid the failure in this case allowing the unsupported
> signals when we don't provide the "act" parameters to sigaction, only the
> "oldact" one. I have also run the LTP suite with several target and debian
> based distros.
>
> v3: use trace_event_get_state_backends()
>     update comments
>     Add R-b
>
> v2: tested with golang 1.12.10 linux/arm64, eoan)
>     Ignore unsupported signals rather than returning an error
>     replace i, j by target_sig, host_sig
>
> Laurent Vivier (4):
>   linux-user: add missing TARGET_SIGRTMIN for hppa
>   linux-user: cleanup signal.c
>   linux-user: fix TARGET_NSIG and _NSIG uses
>   linux-user: fix use of SIGRTMIN
>
>  linux-user/hppa/target_signal.h |   1 +
>  linux-user/signal.c             | 134 ++++++++++++++++++++++++--------
>  linux-user/trace-events         |   3 +
>  3 files changed, 106 insertions(+), 32 deletions(-)
>
> --
> 2.24.1