On Tue, Feb 7, 2017 at 12:42 PM, Edgar E. Iglesias <edgar.igles...@gmail.com
> wrote:
> From: "Edgar E. Iglesias" <edgar.igles...@xilinx.com>
>
> Allow platform_hvc to handle guest SMC calls (as well as
> HVC calls) in a platform specific way.
>
> Signed-off-by: Edgar E. Iglesias <edgar.igles...@xilinx.com>
> ---
> xen/arch/arm/traps.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c
> index 33950d9..1bedc6e 100644
> --- a/xen/arch/arm/traps.c
> +++ b/xen/arch/arm/traps.c
> @@ -2623,6 +2623,11 @@ static void do_trap_smc(struct cpu_user_regs *regs,
> const union hsr hsr)
> if ( current->domain->arch.monitor.privileged_call_enabled )
> rc = monitor_smc();
>
>
I think you should check that rc is still 0 at this point as the vCPU might
already be paused and the event forwarded to a monitor subscriber.
> + if ( platform_hvc(regs) ) {
> + advance_pc(regs, hsr);
> + rc = 1;
> + }
> +
> if ( rc != 1 )
> inject_undef_exception(regs, hsr);
> }
> --
> 2.7.4
>
>
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>
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