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From:   "Suthikulpanit, Suravee" <Suravee.Suthikulpanit@amd.com>
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Subject: [PATCH] svm: Add warning message for AVIC IPI invalid target
Thread-Topic: [PATCH] svm: Add warning message for AVIC IPI invalid target
Thread-Index: AQHUsjyio81xgzyc0EGuZO9Z8XPvxQ==
Date:   Tue, 22 Jan 2019 10:24:19 +0000
Message-ID: <20190122102356.125085-1-Suravee.Suthikulpanit@amd.com>
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From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>

Print warning message when IPI target ID is invalid due to one of
the following reasons:
  * In logical mode: cluster > max_cluster (64)
  * In physical mode: target > max_physical (512)
  * Address is not present in the physical or logical ID tables

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
---
 arch/x86/kvm/svm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index a157ca5b6869..2aff835a65ed 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -4526,6 +4526,8 @@ static int avic_incomplete_ipi_interception(struct vc=
pu_svm *svm)
 		break;
 	}
 	case AVIC_IPI_FAILURE_INVALID_TARGET:
+		WARN_ONCE(1, "Invalid IPI target: index=3D%u, vcpu=3D%d, icr=3D%#0x:%#0x=
\n",
+			  index, svm->vcpu.vcpu_id, icrh, icrl);
 		break;
 	case AVIC_IPI_FAILURE_INVALID_BACKING_PAGE:
 		WARN_ONCE(1, "Invalid backing page\n");
--=20
2.17.1