Re: [Qemu-devel] [PATCH v4 1/4] linux-user/aarch64: Reset btype for syscalls and signals

[Peter Maydell]

On Sat, 30 Mar 2019 at 00:59, Richard Henderson
<address@hidden> wrote:
>
> The value of btype for syscalls is CONSTRAINED UNPREDICTABLE,
> so we need to make sure that the value is 0 before clone,
> fork, or syscall return.
>
> The value of btype for signals is defined, but it does not make
> sense for a SIGILL handler to enter with the btype set as for
> the indirect branch that caused the SIGILL.
>
> Signed-off-by: Richard Henderson <address@hidden>

Reviewed-by: Peter Maydell <address@hidden>

thanks
-- PMM