On 9/6/15 10:32 PM, Paolo Bonzini wrote:
On 05/09/2015 00:38, Wanpeng Li wrote:
@@ -1940,11 +1975,16 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu)
* arrives.
*/
if (kvm_vcpu_check_block(vcpu) < 0) {
+polled = true;
On 05/09/2015 00:38, Wanpeng Li wrote:
>>
>> @@ -1940,11 +1975,16 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu)
>>* arrives.
>>*/
>> if (kvm_vcpu_check_block(vcpu) < 0) {
>> +polled = true;
>>
Hi Paolo,
On 9/3/15 10:07 PM, Wanpeng Li wrote:
[...]
static int kvm_vcpu_check_block(struct kvm_vcpu *vcpu)
{
if (kvm_arch_vcpu_runnable(vcpu)) {
@@ -1928,7 +1962,8 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu)
{
ktime_t start, cur;
DEFINE_WAIT(wait);
- bool
There is a downside of always-poll since poll is still happened for idle
vCPUs which can waste cpu usage. This patchset add the ability to adjust
halt_poll_ns dynamically, to grow halt_poll_ns when shot halt is detected,
and to shrink halt_poll_ns when long halt is detected.
There are two new
