Re: [Qemu-devel] gdbstub broken in master

["Andreas Färber" <afaerber@suse.de>]

Hi Max,

Am 09.07.2013 01:37, schrieb Max Filippov:
> commit c52a6b67c1d7c6fc9fb2e3ba988d7b978e1487d3
> Author: Andreas Färber <afaerber@suse.de>
> Date:   Fri May 17 17:49:10 2013 +0200
> 
>     gdbstub: Simplify find_cpu()
> 
>     Use qemu_get_cpu() and CPUState::env_ptr.
> 
>     Reviewed-by: Richard Henderson <rth@twiddle.net>
>     Signed-off-by: Andreas Färber <afaerber@suse.de>
> 
> breaks single-stepping in gdb. This commit replaces
> 
>         if (cpu_index(cpu) == thread_id) {
> 
> with qemu_get_cpu(thread_id) call, which does the following:
> 
>         if (cpu->cpu_index == index) {
> 
> while cpu_index(cpu) used to return cpu->cpu_index + 1;

Ouch! Thanks for catching this, not sure how I managed to mix them up.

I've reverted this on qom-cpu (rebasing the first_cpu/next_cpu patch)
and dropped a queued patch replacing two find_cpu()s with that
qemu_get_cpu().
https://github.com/afaerber/qemu-cpu/commits/qom-cpu

The qom-cpu-11 branch has been updated to convert c_cpu, g_cpu and
find_cpu() to CPUState all in one go rather than replacing and dropping
the latter and doing the two fields separately. Can you give it a test?

Regards,
Andreas

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