On 10/24/2017 11:37 AM, Eduardo Valentin wrote: > Hello Peter, > On Tue, Oct 24, 2017 at 10:13:45AM +0200, Peter Zijlstra wrote: >> On Mon, Oct 23, 2017 at 05:44:27PM -0700, Eduardo Valentin wrote: >>> @@ -46,6 +48,8 @@ static inline bool virt_spin_lock(struct qspinlock *lock) >>> if (!static_cpu_has(X86_FEATURE_HYPERVISOR)) >>> return false; >>> >>> + if (kvm_para_has_feature(KVM_FEATURE_PV_DEDICATED)) >>> + return false; >>> /* >>> * On hypervisors without PARAVIRT_SPINLOCKS support we fall >>> * back to a Test-and-Set spinlock, because fair locks have >> This does not apply. Much has been changed here recently. >> > I checked against Linus master branch before sending. Which tree/branch are you referring to / should I based this? > Please check the tip tree (https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git) which has the latest changes in locking code. Cheers, Longman
