On Fri, 27 Mar 2020 11:23:33 +0100
Christian Borntraeger <borntraeger@xxxxxxxxxx> wrote:
> On 27.03.20 10:23, Christian Borntraeger wrote:
> After the qemu patch discussion I would add
>
>
> diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
> index 0e268b3d1591..ba8f9cbe4376 100644
> --- a/Documentation/virt/kvm/api.rst
> +++ b/Documentation/virt/kvm/api.rst
> @@ -4680,6 +4680,12 @@ KVM_PV_ENABLE
> command has succeeded, any CPU added via hotplug will become
> protected during its creation as well.
>
> + Errors:
> +
> + ===== =============================
> + EINTR an unmasked signal is pending
> + ===== =============================
> +
> KVM_PV_DISABLE
>
> Deregister the VM from the Ultravisor and reclaim the memory that
>
>
> and change the patch description to something like
>
>
> s390/gmap: return proper error code on ksm unsharing
>
> If a signal is pending we might return -ENOMEM instead of -EINTR.
> We should propagate the proper error during KSM unsharing.
> unmerge_ksm_pages returns -ERESTARTSYS on signal_pending. This gets
> translated by entry.S to -EINTR. It is important to get this error
> code so that userspace can retry.
>
> Fixes: 3ac8e38015d4 ("s390/mm: disable KSM for storage key enabled pages")
> Reviewed-by: Janosch Frank <frankja@xxxxxxxxxxxxxxxxxx>
> Reported-by: Marc Hartmayer <mhartmay@xxxxxxxxxxxxx>
> Tested-by: Marc Hartmayer <mhartmay@xxxxxxxxxxxxx>
> Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
>
LGTM
