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authorDavid Hildenbrand <dahi@linux.vnet.ibm.com>2015-09-18 12:34:53 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2015-09-25 10:31:30 +0200
commit920552b213e3dc832a874b4e7ba29ecddbab31bc (patch)
treec07ed91961b7842a5056f98794c4827a0e493cea /arch/arm/include
parent58c95070da3a504fbeca7939435bbb062cb96ea3 (diff)
downloadlinux-linaro-stable-920552b213e3dc832a874b4e7ba29ecddbab31bc.tar.gz
KVM: disable halt_poll_ns as default for s390x
We observed some performance degradation on s390x with dynamic halt polling. Until we can provide a proper fix, let's enable halt_poll_ns as default only for supported architectures. Architectures are now free to set their own halt_poll_ns default value. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/kvm_host.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
index 3df1e975f72a..c4072d9f32c7 100644
--- a/arch/arm/include/asm/kvm_host.h
+++ b/arch/arm/include/asm/kvm_host.h
@@ -33,6 +33,7 @@
#define KVM_PRIVATE_MEM_SLOTS 4
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
#define KVM_HAVE_ONE_REG
+#define KVM_HALT_POLL_NS_DEFAULT 500000
#define KVM_VCPU_MAX_FEATURES 2