linux-kernel - [PATCH] KVM: vmx: print more APICv fields in dump

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Message-Id: <1555335333-23636-1-git-send-email-pbonzini@redhat.com>
Date:   Mon, 15 Apr 2019 15:35:32 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: [PATCH] KVM: vmx: print more APICv fields in dump_vmcs

The SVI, RVI, virtual-APIC page address and APIC-access page address fields
were left out of dump_vmcs.  Add them.

Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 arch/x86/kvm/vmx/vmx.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index ab432a930ae8..f8054dc1de65 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -5723,8 +5723,17 @@ static void dump_vmcs(void)
 	if (secondary_exec_control & SECONDARY_EXEC_TSC_SCALING)
 		pr_err("TSC Multiplier = 0x%016llx\n",
 		       vmcs_read64(TSC_MULTIPLIER));
-	if (cpu_based_exec_ctrl & CPU_BASED_TPR_SHADOW)
-		pr_err("TPR Threshold = 0x%02x\n", vmcs_read32(TPR_THRESHOLD));
+	if (cpu_based_exec_ctrl & CPU_BASED_TPR_SHADOW) {
+		if (secondary_exec_control & SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY) {
+			u16 status = vmcs_read16(GUEST_INTR_STATUS);
+			pr_err("SVI|RVI = %02x|%02x ", status >> 8, status & 0xff);
+		}
+		pr_err(KERN_CONT "TPR Threshold = 0x%02x\n", vmcs_read32(TPR_THRESHOLD));
+		if (secondary_exec_control & (SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
+		    			      SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE))
+			pr_err("APIC-access addr = 0x%016llx ", vmcs_read64(APIC_ACCESS_ADDR));
+		pr_err(KERN_CONT "virt-APIC addr=0x%016llx\n", vmcs_read64(VIRTUAL_APIC_PAGE_ADDR));
+	}
 	if (pin_based_exec_ctrl & PIN_BASED_POSTED_INTR)
 		pr_err("PostedIntrVec = 0x%02x\n", vmcs_read16(POSTED_INTR_NV));
 	if ((secondary_exec_control & SECONDARY_EXEC_ENABLE_EPT))
-- 
1.8.3.1