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authorLadi Prosek <lprosek@redhat.com>2017-10-11 16:54:42 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-11-30 08:39:06 +0000
commit1be0c0ebbcbc31bab0e4bd144c5337e7b06f7467 (patch)
treec70da86a19a505c210e9b1ffaab82ff9b476734b /arch
parent3df312771012fcefde06590294a6bcfdcc7beaf7 (diff)
KVM: nVMX: set IDTR and GDTR limits when loading L1 host state
commit 21f2d551183847bc7fbe8d866151d00cdad18752 upstream. Intel SDM 27.5.2 Loading Host Segment and Descriptor-Table Registers: "The GDTR and IDTR limits are each set to FFFFH." Signed-off-by: Ladi Prosek <lprosek@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/vmx.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index a8ae57acb6f6..0f0b27d96f27 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -10715,6 +10715,8 @@ static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
vmcs_writel(GUEST_SYSENTER_EIP, vmcs12->host_ia32_sysenter_eip);
vmcs_writel(GUEST_IDTR_BASE, vmcs12->host_idtr_base);
vmcs_writel(GUEST_GDTR_BASE, vmcs12->host_gdtr_base);
+ vmcs_write32(GUEST_IDTR_LIMIT, 0xFFFF);
+ vmcs_write32(GUEST_GDTR_LIMIT, 0xFFFF);
/* If not VM_EXIT_CLEAR_BNDCFGS, the L2 value propagates to L1. */
if (vmcs12->vm_exit_controls & VM_EXIT_CLEAR_BNDCFGS)