Patchwork [1/2] QEMU kvm: Add PV_UNHALT feature support

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Submitter Raghavendra K T
Date March 23, 2012, 8:23 a.m.
Message ID <20120323082310.17193.22446.sendpatchset@codeblue>
Download mbox | patch
Permalink /patch/148395/
State New
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Comments

Raghavendra K T - March 23, 2012, 8:23 a.m.
From: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>

Extend the KVM Hypervisor to enable PVLOCK_KICK feature that allows
a vcpu to kick the halted vcpu to continue with execution in PV ticket
spinlock.

Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
---

Patch

diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index e74a9e4..dbebd3a 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -98,6 +98,7 @@  struct kvm_para_features {
     { KVM_CAP_NOP_IO_DELAY, KVM_FEATURE_NOP_IO_DELAY },
     { KVM_CAP_PV_MMU, KVM_FEATURE_MMU_OP },
     { KVM_CAP_ASYNC_PF, KVM_FEATURE_ASYNC_PF },
+    { KVM_CAP_PV_UNHALT, KVM_FEATURE_PV_UNHALT },
     { -1, -1 }
 };