[PATCH v4 14/15] pvh/acpi: Save ACPI registers for PVH guests

[Boris Ostrovsky <boris.ostrovsky@oracle.com>]

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
---
Changes in v4:
* New patch

(This should eventually be moved in acpi.c)

 xen/arch/x86/hvm/pmtimer.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/xen/arch/x86/hvm/pmtimer.c b/xen/arch/x86/hvm/pmtimer.c
index 5144928..a810f2b 100644
--- a/xen/arch/x86/hvm/pmtimer.c
+++ b/xen/arch/x86/hvm/pmtimer.c
@@ -257,7 +257,11 @@ static int acpi_save(struct domain *d, hvm_domain_context_t *h)
     int rc;
 
     if ( !has_vpm(d) )
+    {
+        if ( !has_acpi_dm_ff(d) )
+            return hvm_save_entry(ACPI, 0, h, acpi);
         return 0;
+    }
 
     spin_lock(&s->lock);
 
@@ -286,7 +290,11 @@ static int acpi_load(struct domain *d, hvm_domain_context_t *h)
     PMTState *s = &d->arch.hvm_domain.pl_time->vpmt;
 
     if ( !has_vpm(d) )
+    {
+        if ( !has_acpi_dm_ff(d) )
+            return hvm_load_entry(ACPI, h, acpi);
         return -ENODEV;
+    }
 
     spin_lock(&s->lock);
 
-- 
2.7.4


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