On Tue, 17 Dec 2013, Konrad Rzeszutek Wilk wrote:
> From: Mukesh Rathor <mukesh.rat...@oracle.com>
>
> As we do not have yet a mechanism for that.
>
> Signed-off-by: Mukesh Rathor <mukesh.rat...@oracle.com>
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
Even though we don't even compile cpu_hotplug on ARM yet, I don't like
this change because it affects ARM guests too.
Please add a note about ARM guests in the FIXME line.
> drivers/xen/cpu_hotplug.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/xen/cpu_hotplug.c b/drivers/xen/cpu_hotplug.c
> index cc6513a..cbb02af 100644
> --- a/drivers/xen/cpu_hotplug.c
> +++ b/drivers/xen/cpu_hotplug.c
> @@ -4,6 +4,7 @@
>
> #include <xen/xen.h>
> #include <xen/xenbus.h>
> +#include <xen/features.h>
>
> #include <asm/xen/hypervisor.h>
> #include <asm/cpu.h>
> @@ -102,7 +103,8 @@ static int __init setup_vcpu_hotplug_event(void)
> static struct notifier_block xsn_cpu = {
> .notifier_call = setup_cpu_watcher };
>
> - if (!xen_pv_domain())
> + /* PVH TBD/FIXME: future work */
> + if (!xen_pv_domain() || xen_feature(XENFEAT_auto_translated_physmap))
> return -ENODEV;
>
> register_xenstore_notifier(&xsn_cpu);
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