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| author |   Suresh E. Warrier <warrier@linux.vnet.ibm.com> | 2015-12-21 16:33:57 -0600 |
|---|---|---|
| committer |   Paul Mackerras <paulus@samba.org> | 2016-02-29 16:25:06 +1100 |
| commit | 520fe9c607d3acea96391aad27e17518bd7d39bd (patch) | |
| tree | ee3c420760c8d739bfe2cfa9d928c40622545c69 /include/uapi/linux/kvm.h | |
| parent | KVM: PPC: Book3S HV: Send IPI to host core to wake VCPU (diff) | |
| download | linux-dev-520fe9c607d3acea96391aad27e17518bd7d39bd.tar.xz linux-dev-520fe9c607d3acea96391aad27e17518bd7d39bd.zip | |
KVM: PPC: Book3S HV: Add tunable to control H_IPI redirection
Redirecting the wakeup of a VCPU from the H_IPI hypercall to
a core running in the host is usually a good idea, most workloads
seemed to benefit. However, in one heavily interrupt-driven SMT1
workload, some regression was observed. This patch adds a kvm_hv
module parameter called h_ipi_redirect to control this feature.
The default value for this tunable is 1 - that is enable the feature.
Signed-off-by: Suresh Warrier <warrier@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/uapi/linux/kvm.h')
0 files changed, 0 insertions, 0 deletions