[PATCH 0/1] KVM: s390: one more backport for 4.4

[PATCH 0/1] KVM: s390: one more backport for 4.4

[Christian Borntraeger]

Greg,

this is a backport of a patch that is needed to make
"KVM: s390: wire up bpb feature" useful in 4.4. Without that the
bpb feature is available but the guest does not know that it
can be used.

Alexander Yarygin (1):
  KVM: s390: Enable all facility bits that are known good for
    passthrough

 arch/s390/kvm/kvm-s390.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

-- 
2.14.2

[PATCH 1/1] KVM: s390: Enable all facility bits that are known good for passthrough

[Christian Borntraeger]

From: Alexander Yarygin <yarygin@linux.vnet.ibm.com>

Some facility bits are in a range that is defined to be "ok for guests
without any necessary hypervisor changes". Enable those bits.

Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Upstream: ed8dda0bf74b4fb8e73d8880c78effabd3285fd8)
---
 arch/s390/kvm/kvm-s390.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index b011140e6b06..5ddb1debba95 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -118,8 +118,8 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
 
 /* upper facilities limit for kvm */
 unsigned long kvm_s390_fac_list_mask[] = {
-	0xffe6fffbfcfdfc40UL,
-	0x005e800000000000UL,
+	0xffe6ffffffffffffUL,
+	0x005effffffffffffUL,
 };
 
 unsigned long kvm_s390_fac_list_mask_size(void)
-- 
2.14.2

Re: [PATCH 1/1] KVM: s390: Enable all facility bits that are known good for passthrough

[Greg Kroah-Hartman]

On Thu, May 03, 2018 at 11:56:17AM +0200, Christian Borntraeger wrote:
> From: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
> 
> Some facility bits are in a range that is defined to be "ok for guests
> without any necessary hypervisor changes". Enable those bits.
> 
> Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
> Upstream: ed8dda0bf74b4fb8e73d8880c78effabd3285fd8)

Mis-matched ) just hurts my programmer brain :)

Now applied, thanks.

greg k-h

Re: [PATCH 0/1] KVM: s390: one more backport for 4.4

[Cornelia Huck]

On Thu,  3 May 2018 11:56:16 +0200
Christian Borntraeger <borntraeger@de.ibm.com> wrote:

> Greg,
> 
> this is a backport of a patch that is needed to make
> "KVM: s390: wire up bpb feature" useful in 4.4. Without that the
> bpb feature is available but the guest does not know that it
> can be used.
> 
> Alexander Yarygin (1):
>   KVM: s390: Enable all facility bits that are known good for
>     passthrough
> 
>  arch/s390/kvm/kvm-s390.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 

Indeed, this patch is needed, and it looks good to me.