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openSUSE:Maintenance:8626
xen.openSUSE_Leap_42.3_Update
5acdde3f-VT-x-fix-determination-of-EFER-LMA-in-...
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File 5acdde3f-VT-x-fix-determination-of-EFER-LMA-in-vmcs_dump_vcpu.patch of Package xen.openSUSE_Leap_42.3_Update
# Commit 82540b66ceb9318aa185f2488cbbbe479694de8f # Date 2018-04-11 11:06:55 +0100 # Author Andrew Cooper <andrew.cooper3@citrix.com> # Committer Andrew Cooper <andrew.cooper3@citrix.com> x86/VT-x: Fix determination of EFER.LMA in vmcs_dump_vcpu() The LMA setting comes from the entry controls. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Acked-by: Kevin Tian <kevin.tian@intel.com> --- a/xen/arch/x86/hvm/vmx/vmcs.c +++ b/xen/arch/x86/hvm/vmx/vmcs.c @@ -1806,7 +1806,10 @@ void vmcs_dump_vcpu(struct vcpu *v) vmentry_ctl = vmr32(VM_ENTRY_CONTROLS), vmexit_ctl = vmr32(VM_EXIT_CONTROLS); cr4 = vmr(GUEST_CR4); - efer = vmr(GUEST_EFER); + + /* EFER.LMA is read as zero, and is loaded from vmentry_ctl on entry. */ + BUILD_BUG_ON(VM_ENTRY_IA32E_MODE << 1 != EFER_LMA); + efer = vmr(GUEST_EFER) | ((vmentry_ctl & VM_ENTRY_IA32E_MODE) << 1); printk("*** Guest State ***\n"); printk("CR0: actual=0x%016lx, shadow=0x%016lx, gh_mask=%016lx\n",
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