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Message-Id: <da4e44418febfbe4e3d707d17987e717c0c300f1.1673539699.git.isaku.yamahata@intel.com>
Date: Thu, 12 Jan 2023 08:31:19 -0800
From: isaku.yamahata@...el.com
To: kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: isaku.yamahata@...el.com, isaku.yamahata@...il.com,
Paolo Bonzini <pbonzini@...hat.com>, erdemaktas@...gle.com,
Sean Christopherson <seanjc@...gle.com>,
Sagi Shahar <sagis@...gle.com>,
David Matlack <dmatlack@...gle.com>
Subject: [PATCH v11 011/113] KVM: TDX: Add helper functions to print TDX SEAMCALL error
From: Isaku Yamahata <isaku.yamahata@...el.com>
Add helper functions to print out errors from the TDX module in a uniform
manner.
Signed-off-by: Isaku Yamahata <isaku.yamahata@...el.com>
---
arch/x86/kvm/Makefile | 2 +-
arch/x86/kvm/vmx/tdx_error.c | 21 +++++++++++++++++++++
arch/x86/kvm/vmx/tdx_ops.h | 3 +++
3 files changed, 25 insertions(+), 1 deletion(-)
create mode 100644 arch/x86/kvm/vmx/tdx_error.c
diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index 4b01ab842ab7..e3354b784e10 100644
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -25,7 +25,7 @@ kvm-$(CONFIG_KVM_SMM) += smm.o
kvm-intel-y += vmx/vmx.o vmx/vmenter.o vmx/pmu_intel.o vmx/vmcs12.o \
vmx/hyperv.o vmx/nested.o vmx/posted_intr.o vmx/main.o
kvm-intel-$(CONFIG_X86_SGX_KVM) += vmx/sgx.o
-kvm-intel-$(CONFIG_INTEL_TDX_HOST) += vmx/tdx.o
+kvm-intel-$(CONFIG_INTEL_TDX_HOST) += vmx/tdx.o vmx/tdx_error.o
kvm-amd-y += svm/svm.o svm/vmenter.o svm/pmu.o svm/nested.o svm/avic.o \
svm/sev.o svm/hyperv.o
diff --git a/arch/x86/kvm/vmx/tdx_error.c b/arch/x86/kvm/vmx/tdx_error.c
new file mode 100644
index 000000000000..574b72d34e1e
--- /dev/null
+++ b/arch/x86/kvm/vmx/tdx_error.c
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+/* functions to record TDX SEAMCALL error */
+
+#include <linux/kernel.h>
+#include <linux/bug.h>
+
+#include "tdx_ops.h"
+
+void pr_tdx_error(u64 op, u64 error_code, const struct tdx_module_output *out)
+{
+ if (!out) {
+ pr_err_ratelimited("SEAMCALL[%lld] failed: 0x%llx\n",
+ op, error_code);
+ return;
+ }
+
+ pr_err_ratelimited("SEAMCALL[%lld] failed: 0x%llx RCX 0x%llx, RDX 0x%llx,"
+ " R8 0x%llx, R9 0x%llx, R10 0x%llx, R11 0x%llx\n",
+ op, error_code,
+ out->rcx, out->rdx, out->r8, out->r9, out->r10, out->r11);
+}
diff --git a/arch/x86/kvm/vmx/tdx_ops.h b/arch/x86/kvm/vmx/tdx_ops.h
index 85adbf49c277..8cc2f01c509b 100644
--- a/arch/x86/kvm/vmx/tdx_ops.h
+++ b/arch/x86/kvm/vmx/tdx_ops.h
@@ -9,12 +9,15 @@
#include <asm/cacheflush.h>
#include <asm/asm.h>
#include <asm/kvm_host.h>
+#include <asm/tdx.h>
#include "tdx_errno.h"
#include "tdx_arch.h"
#ifdef CONFIG_INTEL_TDX_HOST
+void pr_tdx_error(u64 op, u64 error_code, const struct tdx_module_output *out);
+
static inline u64 tdh_mng_addcx(hpa_t tdr, hpa_t addr)
{
clflush_cache_range(__va(addr), PAGE_SIZE);
--
2.25.1
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