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authorRaghavendra K T <raghavendra.kt@linux.vnet.ibm.com>2012-07-18 19:07:32 +0530
committerAvi Kivity <avi@redhat.com>2012-07-23 13:00:53 +0300
commitf2a743473194a1ad44a85f8b63aeef9d63e5bf47 (patch)
treee0051018384596656ffa5892fafcf4b1665bfdbe
parent93b6547e2219784b2df790353e083e0bdbebd2c2 (diff)
downloadlinux-f2a743473194a1ad44a85f8b63aeef9d63e5bf47.tar.gz
KVM: Add config to support ple or cpu relax optimzation
Suggested-by: Avi Kivity <avi@redhat.com> Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Reviewed-by: Rik van Riel <riel@redhat.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> # on s390x Signed-off-by: Avi Kivity <avi@redhat.com>
-rw-r--r--arch/s390/kvm/Kconfig1
-rw-r--r--arch/x86/kvm/Kconfig1
-rw-r--r--virt/kvm/Kconfig3
3 files changed, 5 insertions, 0 deletions
diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig
index 78eb9847008..a6e2677724e 100644
--- a/arch/s390/kvm/Kconfig
+++ b/arch/s390/kvm/Kconfig
@@ -21,6 +21,7 @@ config KVM
depends on HAVE_KVM && EXPERIMENTAL
select PREEMPT_NOTIFIERS
select ANON_INODES
+ select HAVE_KVM_CPU_RELAX_INTERCEPT
---help---
Support hosting paravirtualized guest machines using the SIE
virtualization capability on the mainframe. This should work
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index a28f338843e..45c044f0fff 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -37,6 +37,7 @@ config KVM
select TASK_DELAY_ACCT
select PERF_EVENTS
select HAVE_KVM_MSI
+ select HAVE_KVM_CPU_RELAX_INTERCEPT
---help---
Support hosting fully virtualized guest machines using hardware
virtualization extensions. You will need a fairly recent
diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig
index 28694f4a913..d01b24b72c6 100644
--- a/virt/kvm/Kconfig
+++ b/virt/kvm/Kconfig
@@ -21,3 +21,6 @@ config KVM_ASYNC_PF
config HAVE_KVM_MSI
bool
+
+config HAVE_KVM_CPU_RELAX_INTERCEPT
+ bool