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KVM: x86: dump_vmcs should consider only the load controls of EFER/PAT

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When deciding whether to dump the GUEST_IA32_EFER and GUEST_IA32_PAT
fields of the VMCS, examine only the VM entry load controls, as saving
on VM exit has no effect on whether VM entry succeeds or fails.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: David Edmondson <david.edmondson@oracle.com>
Message-Id: <20210318120841.133123-4-david.edmondson@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
David Edmondson 2021-03-18 12:08:39 +00:00 committed by Paolo Bonzini
parent 699e1b2e55
commit 5518da62d4
1 changed files with 2 additions and 4 deletions
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6
arch/x86/kvm/vmx/vmx.c
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@ -5771,11 +5771,9 @@ void dump_vmcs(void)
vmx_dump_sel("LDTR:", GUEST_LDTR_SELECTOR);
vmx_dump_dtsel("IDTR:", GUEST_IDTR_LIMIT);
vmx_dump_sel("TR: ", GUEST_TR_SELECTOR);
if ((vmexit_ctl & VM_EXIT_SAVE_IA32_EFER) ||
(vmentry_ctl & VM_ENTRY_LOAD_IA32_EFER))
if (vmentry_ctl & VM_ENTRY_LOAD_IA32_EFER)
pr_err("EFER= 0x%016llx\n", vmcs_read64(GUEST_IA32_EFER));
if ((vmexit_ctl & VM_EXIT_SAVE_IA32_PAT) ||
(vmentry_ctl & VM_ENTRY_LOAD_IA32_PAT))
if (vmentry_ctl & VM_ENTRY_LOAD_IA32_PAT)
pr_err("PAT = 0x%016llx\n", vmcs_read64(GUEST_IA32_PAT));
pr_err("DebugCtl = 0x%016llx DebugExceptions = 0x%016lx\n",
vmcs_read64(GUEST_IA32_DEBUGCTL),