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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>
Raghavendra K T 13 years ago
parent
93b6547e22
commit
f2a7434731
3 changed files with 5 additions and 0 deletions
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  1. 1 0
      arch/s390/kvm/Kconfig
  2. 1 0
      arch/x86/kvm/Kconfig
  3. 3 0
      virt/kvm/Kconfig

+ 1 - 0
arch/s390/kvm/Kconfig
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@@ -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

+ 1 - 0
arch/x86/kvm/Kconfig
View File 

@@ -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

+ 3 - 0
virt/kvm/Kconfig
View File 

@@ -21,3 +21,6 @@ config KVM_ASYNC_PF
 
 
 config HAVE_KVM_MSI
 
        bool
 
+
 
+config HAVE_KVM_CPU_RELAX_INTERCEPT
 
+       bool