search for: pv_lock_preempt

Displaying 4 results from an estimated 4 matches for "pv_lock_preempt".

Did you mean: pv_lock_preempted
2019 Dec 19
0
[PATCH 1/5] KVM: arm64: Document PV-lock interface
...= >> + >> +KVM/arm64 provids some hypervisor service calls to support a paravirtualized >> +guest obtaining the vcpu is currently running or not. >> + >> +Two new SMCCC compatible hypercalls are defined: >> + >> +* PV_LOCK_FEATURES: 0xC5000040 >> +* PV_LOCK_PREEMPTED: 0xC5000041 > > These values are in the "Standard Hypervisor Service Calls" section of > SMCCC - so is there a document that describes this features such that > other OSes or hypervisors can implement it? I'm also not entirely sure > of the process of ensuring that...
2019 Dec 26
7
[PATCH v2 0/6] KVM: arm64: VCPU preempted check support
This patch set aims to support the vcpu_is_preempted() functionality under KVM/arm64, which allowing the guest to obtain the VCPU is currently running or not. This will enhance lock performance on overcommitted hosts (more runnable VCPUs than physical CPUs in the system) as doing busy waits for preempted VCPUs will hurt system performance far worse than early yielding. We have observed some
2019 Dec 17
10
[PATCH 0/5] KVM: arm64: vcpu preempted check support
From: Zengruan Ye <yezengruan at huawei.com> This patch set aims to support the vcpu_is_preempted() functionality under KVM/arm64, which allowing the guest to obtain the vcpu is currently running or not. This will enhance lock performance on overcommitted hosts (more runnable vcpus than physical cpus in the system) as doing busy waits for preempted vcpus will hurt system performance far
2019 Dec 17
10
[PATCH 0/5] KVM: arm64: vcpu preempted check support
From: Zengruan Ye <yezengruan at huawei.com> This patch set aims to support the vcpu_is_preempted() functionality under KVM/arm64, which allowing the guest to obtain the vcpu is currently running or not. This will enhance lock performance on overcommitted hosts (more runnable vcpus than physical cpus in the system) as doing busy waits for preempted vcpus will hurt system performance far