[Xen-devel] [PATCH v2] x86/hvm: Change return error for offline vcpus

[Alexandru Isaila <aisaila@xxxxxxxxxxxxxxx>]

This patch is needed in order to have a different return error for invalid vcpu
and offline vcpu on the per vcpu king.

Signed-off-by: Alexandru Isaila <aisaila@xxxxxxxxxxxxxxx>

---
Changes since V1:
        - Add conditional statement in order to have a difference between
        per_vcpu and per_dom return error.
---
 xen/arch/x86/hvm/save.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/arch/x86/hvm/save.c b/xen/arch/x86/hvm/save.c
index d520898843..1764fb0918 100644
--- a/xen/arch/x86/hvm/save.c
+++ b/xen/arch/x86/hvm/save.c
@@ -165,7 +165,8 @@ int hvm_save_one(struct domain *d, unsigned int typecode, 
unsigned int instance,
     if ( (rv = hvm_sr_handlers[typecode].save(v, &ctxt)) != 0 )
         printk(XENLOG_G_ERR "HVM%d save: failed to save type %"PRIu16" (%d)\n",
                d->domain_id, typecode, rv);
-    else if ( rv = -ENOENT, ctxt.cur >= sizeof(*desc) )
+    else if ( rv = hvm_sr_handlers[typecode].kind == HVMSR_PER_VCPU ?
+              -ENODATA : -ENOENT, ctxt.cur >= sizeof(*desc) )
     {
         uint32_t off;
 
-- 
2.17.1


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