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

2016-12-19 Thread Paolo Bonzini
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

2016-12-19 Thread Pan Xinhui
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

2016-12-19 Thread Andrea Arcangeli
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