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| author |   David Matlack <dmatlack@google.com> | 2020-04-17 15:14:46 -0700 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2020-04-24 12:53:17 -0400 |
| commit | acd05785e48c01edb2c4f4d014d28478b5f19fb5 (patch) | |
| tree | c8a7003b579cbdc7c79d109ec563f84de7d07018 /include/linux/kvm_host.h | |
| parent | KVM: nVMX: Store vmcs.EXIT_QUALIFICATION as an unsigned long, not u32 (diff) | |
| download | wireguard-linux-acd05785e48c01edb2c4f4d014d28478b5f19fb5.tar.xz wireguard-linux-acd05785e48c01edb2c4f4d014d28478b5f19fb5.zip | |
kvm: add capability for halt polling
KVM_CAP_HALT_POLL is a per-VM capability that lets userspace
control the halt-polling time, allowing halt-polling to be tuned or
disabled on particular VMs.
With dynamic halt-polling, a VM's VCPUs can poll from anywhere from
[0, halt_poll_ns] on each halt. KVM_CAP_HALT_POLL sets the
upper limit on the poll time.
Signed-off-by: David Matlack <dmatlack@google.com>
Signed-off-by: Jon Cargille <jcargill@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Message-Id: <20200417221446.108733-1-jcargill@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/linux/kvm_host.h')
| -rw-r--r-- | include/linux/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 5285a5568208..3cc6ccbb1183 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -503,6 +503,7 @@ struct kvm { struct srcu_struct srcu; struct srcu_struct irq_srcu; pid_t userspace_pid; + unsigned int max_halt_poll_ns; }; #define kvm_err(fmt, ...) \ |