Re: [PATCH] [RFC] Fix for kvm qemu to return control to gdb stub on breakpoints

[Jan Kiszka <jan.kiszka@web.de>]

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Jerone Young wrote:
> 1 file changed, 2 insertions(+)
> qemu/qemu-kvm.c |    2 ++
> 
> 
> Currently breakpoints do not fully work for x86 or any other arch with kvm enable qemu. Control is not being returned by to the gdb stub. This patch add back this ability to return control to the gdb stub when a debug interrupt is hit.
> 
> This is in the io thread so it's best to get comments on this. Is it in the best place? Should more be done here?
> 
> Signed-off-by: Jerone Young <jyoung5@us.ibm.com>
> 
> diff --git a/qemu/qemu-kvm.c b/qemu/qemu-kvm.c
> --- a/qemu/qemu-kvm.c
> +++ b/qemu/qemu-kvm.c
> @@ -352,6 +352,8 @@ static int kvm_main_loop_cpu(CPUState *e
>  	    update_regs_for_init(env);
>  	if (!(env->hflags & HF_HALTED_MASK) && !info->init)
>  	    kvm_cpu_exec(env);
> +	if (env->exception_index == EXCP_DEBUG)
> +	    vm_stop(EXCP_DEBUG);

This isn't enough, please see

	http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/17660

and the rest of that series - just RFC, but already usable.

Jan


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