From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Sean Christopherson <seanjc@google.com>, Xin Li <xin@zytor.com>,
Isaku Yamahata <isaku.yamahata@intel.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Ian Rogers <irogers@google.com>,
James Clark <james.clark@linaro.org>,
Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>
Subject: [PATCH 1/1] tools headers UAPI: Sync KVM's vmx.h header with the kernel sources to handle new exit reasons
Date: Mon, 3 Nov 2025 13:29:04 -0300 [thread overview]
Message-ID: <aQjYUNV37bAvFNks@x1> (raw)
tldr; Just FYI, I'm carrying this on the perf tools tree.
Full explanation:
There used to be no copies, with tools/ code using kernel headers
directly. From time to time tools/perf/ broke due to legitimate kernel
hacking. At some point Linus complained about such direct usage. Then we
adopted the current model.
See further details at:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/include/uapi/README
To pick the changes in:
885df2d2109a60f8 ("KVM: x86: Add support for RDMSR/WRMSRNS w/ immediate on Intel")
c42856af8f70d983 ("KVM: TDX: Add a place holder for handler of TDX hypercalls (TDG.VP.VMCALL)")
That makes 'perf kvm-stat' aware of these new TDCALL and
MSR_{READ,WRITE}_IMM exit reasons, thus addressing the following perf
build warning:
Warning: Kernel ABI header differences:
diff -u tools/arch/x86/include/uapi/asm/vmx.h arch/x86/include/uapi/asm/vmx.h
Please see tools/include/uapi/README for further details.
Cc: Sean Christopherson <seanjc@google.com>
Cc: Xin Li <xin@zytor.com>
Cc: Isaku Yamahata <isaku.yamahata@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/arch/x86/include/uapi/asm/vmx.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/tools/arch/x86/include/uapi/asm/vmx.h b/tools/arch/x86/include/uapi/asm/vmx.h
index f0f4a4cf84a7244e..9792e329343e8715 100644
--- a/tools/arch/x86/include/uapi/asm/vmx.h
+++ b/tools/arch/x86/include/uapi/asm/vmx.h
@@ -94,6 +94,8 @@
#define EXIT_REASON_BUS_LOCK 74
#define EXIT_REASON_NOTIFY 75
#define EXIT_REASON_TDCALL 77
+#define EXIT_REASON_MSR_READ_IMM 84
+#define EXIT_REASON_MSR_WRITE_IMM 85
#define VMX_EXIT_REASONS \
{ EXIT_REASON_EXCEPTION_NMI, "EXCEPTION_NMI" }, \
@@ -158,7 +160,9 @@
{ EXIT_REASON_TPAUSE, "TPAUSE" }, \
{ EXIT_REASON_BUS_LOCK, "BUS_LOCK" }, \
{ EXIT_REASON_NOTIFY, "NOTIFY" }, \
- { EXIT_REASON_TDCALL, "TDCALL" }
+ { EXIT_REASON_TDCALL, "TDCALL" }, \
+ { EXIT_REASON_MSR_READ_IMM, "MSR_READ_IMM" }, \
+ { EXIT_REASON_MSR_WRITE_IMM, "MSR_WRITE_IMM" }
#define VMX_EXIT_REASON_FLAGS \
{ VMX_EXIT_REASONS_FAILED_VMENTRY, "FAILED_VMENTRY" }
--
2.51.1
reply other threads:[~2025-11-03 16:29 UTC|newest]
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