Sean Christopherson 187c8833de KVM: x86: Use rw_semaphore for APICv lock to allow vCPU parallelism ... Use a rw_semaphore instead of a mutex to coordinate APICv updates so that vCPUs responding to requests can take the lock for read and run in parallel. Using a mutex forces serialization of vCPUs even though kvm_vcpu_update_apicv() only touches data local to that vCPU or is protected by a different lock, e.g. SVM's ir_list_lock. Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20211022004927.1448382-5-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2021-10-22 11:20:16 -04:00
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asm	KVM: x86: Use rw_semaphore for APICv lock to allow vCPU parallelism	2021-10-22 11:20:16 -04:00
uapi/asm	KVM: x86: Expose TSC offset controls to userspace	2021-10-18 14:43:45 -04:00