From: Ladi Prosek Date: Wed, 11 Oct 2017 14:54:42 +0000 (+0200) Subject: KVM: nVMX: set IDTR and GDTR limits when loading L1 host state X-Git-Tag: v3.2.99~70 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f05136784d68690a8df8d02c0c67d0ca10e46eb8;p=thirdparty%2Fkernel%2Fstable.git 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 Signed-off-by: Paolo Bonzini [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings --- diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 39d40adcaaf05..0b19852e2a32d 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -7076,6 +7076,8 @@ void load_vmcs12_host_state(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) 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); vmcs_writel(GUEST_TR_BASE, vmcs12->host_tr_base); vmcs_writel(GUEST_GS_BASE, vmcs12->host_gs_base); vmcs_writel(GUEST_FS_BASE, vmcs12->host_fs_base);