Merge tag 'x86-mm-2021-04-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

[linux-2.6-microblaze.git] / arch / x86 / kernel / kvm.c

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 172c947..5d32fa4 100644 (file)
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -613,7 +613,7 @@ static int kvm_cpu_down_prepare(unsigned int cpu)
 }
 #endif
 
-static void kvm_flush_tlb_others(const struct cpumask *cpumask,
+static void kvm_flush_tlb_multi(const struct cpumask *cpumask,
                        const struct flush_tlb_info *info)
 {
        u8 state;
@@ -627,6 +627,11 @@ static void kvm_flush_tlb_others(const struct cpumask *cpumask,
         * queue flush_on_enter for pre-empted vCPUs
         */
        for_each_cpu(cpu, flushmask) {
+               /*
+                * The local vCPU is never preempted, so we do not explicitly
+                * skip check for local vCPU - it will never be cleared from
+                * flushmask.
+                */
                src = &per_cpu(steal_time, cpu);
                state = READ_ONCE(src->preempted);
                if ((state & KVM_VCPU_PREEMPTED)) {
@@ -636,7 +641,7 @@ static void kvm_flush_tlb_others(const struct cpumask *cpumask,
                }
        }
 
-       native_flush_tlb_others(flushmask, info);
+       native_flush_tlb_multi(flushmask, info);
 }
 
 static void __init kvm_guest_init(void)
@@ -654,7 +659,7 @@ static void __init kvm_guest_init(void)
        }
 
        if (pv_tlb_flush_supported()) {
-               pv_ops.mmu.flush_tlb_others = kvm_flush_tlb_others;
+               pv_ops.mmu.flush_tlb_multi = kvm_flush_tlb_multi;
                pv_ops.mmu.tlb_remove_table = tlb_remove_table;
                pr_info("KVM setup pv remote TLB flush\n");
        }