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Subject[PATCH v5 3/5] KVM: x86: dump_vmcs should consider only the load controls of EFER/PAT
Date
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>
---
arch/x86/kvm/vmx/vmx.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 6ab9e4d69aac..67e574deced1 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -5837,11 +5837,9 @@ 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),
--
2.30.2
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