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