Re: [Xen-devel] [PATCH RFC XEN v1 12/14] tools: libxc: implement modify_returncode for ARM.

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Wed, 9 Dec 2015, Ian Campbell wrote:
> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> ---
>  tools/libxc/xc_resume.c | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/tools/libxc/xc_resume.c b/tools/libxc/xc_resume.c
> index 87d4324..fa16c3e 100644
> --- a/tools/libxc/xc_resume.c
> +++ b/tools/libxc/xc_resume.c
> @@ -81,6 +81,24 @@ static int modify_returncode(xc_interface *xch, uint32_t 
> domid)
>      return 0;
>  }
>  
> +#elif defined (__arm__) || defined(__aarch64__)
> +
> +static int modify_returncode(xc_interface *xch, uint32_t domid)
> +{
> +    vcpu_guest_context_any_t ctxt;
> +    int rc;


Should we call xc_domain_getinfo and check for info.shutdown_reason !=
SHUTDOWN_suspend, like x86 does?


> +    if ( (rc = xc_vcpu_getcontext(xch, domid, 0, &ctxt)) != 0 )
> +        return rc;
> +
> +    ctxt.c.user_regs.x0 = 1;
> +
> +    if ( (rc = xc_vcpu_setcontext(xch, domid, 0, &ctxt)) != 0 )
> +        return rc;
> +
> +    return 0;
> +}
> +
>  #else
>  
>  static int modify_returncode(xc_interface *xch, uint32_t domid)
> -- 
> 2.6.1
> 

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