Re: [PATCH 1/2] x86,kvm: move qemu/guest FPU switching out to vcpu_run

2017-11-14 Thread quan.x...@gmail.com
On 2017/11/15 05:54, r...@redhat.com wrote: From: Rik van Riel Currently, every time a VCPU is scheduled out, the host kernel will first save the guest FPU/xstate context, then load the qemu userspace FPU context, only to then immediately save the qemu userspace FPU context back to memory. Wh

Re: [PATCH RFC v3 4/6] Documentation: Add three sysctls for smart idle poll

2017-11-14 Thread quan.x...@gmail.com
On 2017年11月14日 15:44, Ingo Molnar wrote: * Quan Xu wrote: On 2017/11/13 23:08, Ingo Molnar wrote: * Quan Xu wrote: From: Quan Xu To reduce the cost of poll, we introduce three sysctl to control the poll time when running as a virtual machine with paravirt. Signed-off-by: Yang Zhang