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KVM: nVMX: set IDTR and GDTR limits when loading L1 host state

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commit 21f2d55118 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>
This commit is contained in:
Ladi Prosek
2017-10-11 16:54:42 +02:00
committed by Greg Kroah-Hartman
parent 4e426ed57c
commit 8293dc75de
1 changed files with 2 additions and 0 deletions
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arch/x86/kvm/vmx.c
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@ -10394,6 +10394,8 @@ static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
vmcs_writel(GUEST_SYSENTER_EIP, vmcs12->host_ia32_sysenter_eip); vmcs_writel(GUEST_SYSENTER_EIP, vmcs12->host_ia32_sysenter_eip);
vmcs_writel(GUEST_IDTR_BASE, vmcs12->host_idtr_base); vmcs_writel(GUEST_IDTR_BASE, vmcs12->host_idtr_base);
vmcs_writel(GUEST_GDTR_BASE, vmcs12->host_gdtr_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 not VM_EXIT_CLEAR_BNDCFGS, the L2 value propagates to L1. */
if (vmcs12->vm_exit_controls & VM_EXIT_CLEAR_BNDCFGS) if (vmcs12->vm_exit_controls & VM_EXIT_CLEAR_BNDCFGS)