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| author |   Christian Borntraeger <borntraeger@de.ibm.com> | 2019-05-15 09:59:08 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2019-05-20 09:40:39 +0200 |
| commit | 6e9b622d1c3628fae65217465a148b157a361c2a (patch) | |
| tree | edf35c209426dcd87a034803b87d4852d273d811 /arch/s390 | |
| parent | KVM: s390: fix typo in parameter description (diff) | |
| download | linux-dev-6e9b622d1c3628fae65217465a148b157a361c2a.tar.xz linux-dev-6e9b622d1c3628fae65217465a148b157a361c2a.zip | |
KVM: s390: change default halt poll time to 50us
Recent measurements indicate that using 50us results in a reduced CPU
consumption, while still providing the benefit of halt polling. Let's
use 50us instead.
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/kvm_host.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index bdbc81b5bc91..2b00a3ebee08 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -36,7 +36,7 @@ */ #define KVM_NR_IRQCHIPS 1 #define KVM_IRQCHIP_NUM_PINS 4096 -#define KVM_HALT_POLL_NS_DEFAULT 80000 +#define KVM_HALT_POLL_NS_DEFAULT 50000 /* s390-specific vcpu->requests bit members */ #define KVM_REQ_ENABLE_IBS KVM_ARCH_REQ(0) |