Merge tag 'imx-fixes-5.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo...

[sfrench/cifs-2.6.git] / arch / x86 / kernel / kvm.c

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index ba4bfb7f6a36996a806a634bf3c4a86bd594129f..5c93a65ee1e5c2ec56e83eda147bc1bc31e159cd 100644 (file)
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -457,6 +457,7 @@ static void __send_ipi_mask(const struct cpumask *mask, int vector)
 #else
        u64 ipi_bitmap = 0;
 #endif
+       long ret;
 
        if (cpumask_empty(mask))
                return;
@@ -482,8 +483,9 @@ static void __send_ipi_mask(const struct cpumask *mask, int vector)
                } else if (apic_id < min + KVM_IPI_CLUSTER_SIZE) {
                        max = apic_id < max ? max : apic_id;
                } else {
-                       kvm_hypercall4(KVM_HC_SEND_IPI, (unsigned long)ipi_bitmap,
+                       ret = kvm_hypercall4(KVM_HC_SEND_IPI, (unsigned long)ipi_bitmap,
                                (unsigned long)(ipi_bitmap >> BITS_PER_LONG), min, icr);
+                       WARN_ONCE(ret < 0, "KVM: failed to send PV IPI: %ld", ret);
                        min = max = apic_id;
                        ipi_bitmap = 0;
                }
@@ -491,8 +493,9 @@ static void __send_ipi_mask(const struct cpumask *mask, int vector)
        }
 
        if (ipi_bitmap) {
-               kvm_hypercall4(KVM_HC_SEND_IPI, (unsigned long)ipi_bitmap,
+               ret = kvm_hypercall4(KVM_HC_SEND_IPI, (unsigned long)ipi_bitmap,
                        (unsigned long)(ipi_bitmap >> BITS_PER_LONG), min, icr);
+               WARN_ONCE(ret < 0, "KVM: failed to send PV IPI: %ld", ret);
        }
 
        local_irq_restore(flags);