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From 9a920701b3d2d78612bc454c407cf7b0d01f51c6 Mon Sep 17 00:00:00 2001
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From: Paolo Bonzini <pbonzini@redhat.com>
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Date: Mon, 22 Jul 2019 18:22:05 +0100
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Subject: [PATCH 24/39] target/i386: kvm: add VMX migration blocker
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
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Message-id: <20190722182220.19374-4-pbonzini@redhat.com>
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Patchwork-id: 89621
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O-Subject: [RHEL-8.1.0 PATCH qemu-kvm v3 03/18] target/i386: kvm: add VMX migration blocker
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Bugzilla: 1689269
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RH-Acked-by: Peter Xu <zhexu@redhat.com>
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Nested VMX does not support live migration yet. Add a blocker
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until that is worked out.
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Nested SVM only does not support it, but unfortunately it is
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enabled by default for -cpu host so we cannot really disable it.
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit d98f26073bebddcd3da0ba1b86c3a34e840c0fb8)
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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target/i386/kvm.c | 12 ++++++++++++
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1 file changed, 12 insertions(+)
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diff --git a/target/i386/kvm.c b/target/i386/kvm.c
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index 8a4d31d..d414187 100644
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--- a/target/i386/kvm.c
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+++ b/target/i386/kvm.c
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@@ -772,6 +772,7 @@ static int hyperv_handle_properties(CPUState *cs)
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}
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static Error *invtsc_mig_blocker;
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+static Error *vmx_mig_blocker;
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#define KVM_MAX_CPUID_ENTRIES 100
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@@ -1115,6 +1116,17 @@ int kvm_arch_init_vcpu(CPUState *cs)
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!!(c->ecx & CPUID_EXT_SMX);
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}
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+ if ((env->features[FEAT_1_ECX] & CPUID_EXT_VMX) && !vmx_mig_blocker) {
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+ error_setg(&vmx_mig_blocker,
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+ "Nested VMX virtualization does not support live migration yet");
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+ r = migrate_add_blocker(vmx_mig_blocker, &local_err);
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+ if (local_err) {
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+ error_report_err(local_err);
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+ error_free(vmx_mig_blocker);
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+ return r;
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+ }
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+ }
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+
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if (env->mcg_cap & MCG_LMCE_P) {
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has_msr_mcg_ext_ctl = has_msr_feature_control = true;
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}
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--
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1.8.3.1
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