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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>
This commit is contained in:
Raghavendra K T 2012-07-18 19:07:32 +05:30 committed by Avi Kivity
parent 93b6547e22
commit f2a7434731
3 changed files with 5 additions and 0 deletions
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1
arch/s390/kvm/Kconfig
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@ -21,6 +21,7 @@ config KVM
depends on HAVE_KVM && EXPERIMENTAL depends on HAVE_KVM && EXPERIMENTAL
select PREEMPT_NOTIFIERS select PREEMPT_NOTIFIERS
select ANON_INODES select ANON_INODES
select HAVE_KVM_CPU_RELAX_INTERCEPT
---help--- ---help---
Support hosting paravirtualized guest machines using the SIE Support hosting paravirtualized guest machines using the SIE
virtualization capability on the mainframe. This should work virtualization capability on the mainframe. This should work

1
arch/x86/kvm/Kconfig
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@ -37,6 +37,7 @@ config KVM
select TASK_DELAY_ACCT select TASK_DELAY_ACCT
select PERF_EVENTS select PERF_EVENTS
select HAVE_KVM_MSI select HAVE_KVM_MSI
select HAVE_KVM_CPU_RELAX_INTERCEPT
---help--- ---help---
Support hosting fully virtualized guest machines using hardware Support hosting fully virtualized guest machines using hardware
virtualization extensions. You will need a fairly recent virtualization extensions. You will need a fairly recent

3
virt/kvm/Kconfig
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@ -21,3 +21,6 @@ config KVM_ASYNC_PF
config HAVE_KVM_MSI config HAVE_KVM_MSI
bool bool
config HAVE_KVM_CPU_RELAX_INTERCEPT
bool