From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Sean Christopherson <seanjc@google.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 with the kernel to pick SEAMCALL exit reason
Date: Thu, 13 Nov 2025 15:09:01 -0300 [thread overview]
Message-ID: <aRYevQjcXNCYVJRV@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:
9d7dfb95da2cb5c1 ("KVM: VMX: Inject #UD if guest tries to execute SEAMCALL or TDCALL")
The 'perf kvm-stat' tool uses the exit reasons that are included in the
VMX_EXIT_REASONS define, this new SEAMCALL isn't included there (TDCALL
is), so shouldn't be causing any change in behaviour, this patch ends up
being just addressess 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>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/arch/x86/include/uapi/asm/vmx.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/arch/x86/include/uapi/asm/vmx.h b/tools/arch/x86/include/uapi/asm/vmx.h
index 9792e329343e8715..1baa86dfe029329a 100644
--- a/tools/arch/x86/include/uapi/asm/vmx.h
+++ b/tools/arch/x86/include/uapi/asm/vmx.h
@@ -93,6 +93,7 @@
#define EXIT_REASON_TPAUSE 68
#define EXIT_REASON_BUS_LOCK 74
#define EXIT_REASON_NOTIFY 75
+#define EXIT_REASON_SEAMCALL 76
#define EXIT_REASON_TDCALL 77
#define EXIT_REASON_MSR_READ_IMM 84
#define EXIT_REASON_MSR_WRITE_IMM 85
--
2.51.1
reply other threads:[~2025-11-13 18:09 UTC|newest]
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