Re: [PATCH v7 08/11] x86, kvm/x86.c: support vcpu preempted check

On 19/12/2016 14:56, Pan Xinhui wrote: > hi, Andrea > thanks for your reply. :) > > 在 2016/12/19 19:42, Andrea Arcangeli 写道: >> Hello, >> >> On Wed, Nov 02, 2016 at 05:08:35AM -0400, Pan Xinhui wrote: >>> Support the vcpu_is_preempted() functionality under KVM. This will >>> enhance lock per

Re: [PATCH v7 08/11] x86, kvm/x86.c: support vcpu preempted check

hi, Andrea thanks for your reply. :) 在 2016/12/19 19:42, Andrea Arcangeli 写道: Hello, On Wed, Nov 02, 2016 at 05:08:35AM -0400, Pan Xinhui wrote: Support the vcpu_is_preempted() functionality under KVM. This will enhance lock performance on overcommitted hosts (more runnable vcpus than

Re: [PATCH v7 08/11] x86, kvm/x86.c: support vcpu preempted check

Hello, On Wed, Nov 02, 2016 at 05:08:35AM -0400, Pan Xinhui wrote: > Support the vcpu_is_preempted() functionality under KVM. 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 sys

[PATCH v7 08/11] x86, kvm/x86.c: support vcpu preempted check

Support the vcpu_is_preempted() functionality under KVM. 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. Use one field of struct kvm_