linux-kernel - [PATCH 1/1] tools headers UAPI: Sync linux/kvm.h with the kernel sources

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Date:   Tue, 3 May 2022 11:15:32 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/1] tools headers UAPI: Sync linux/kvm.h with the kernel
 sources

To pick the changes in:

  d495f942f40aa412 ("KVM: fix bad user ABI for KVM_EXIT_SYSTEM_EVENT")

That just rebuilds perf, as these patches don't add any new KVM ioctl to
be harvested for the the 'perf trace' ioctl syscall argument
beautifiers.

This is also by now used by tools/testing/selftests/kvm/, a simple test
build succeeded.

This silences this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
  diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h

Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Paolo Bonzini <pbonzini@...hat.com>
Link: http://lore.kernel.org/lkml/
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/include/uapi/linux/kvm.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/include/uapi/linux/kvm.h b/tools/include/uapi/linux/kvm.h
index 91a6fe4e02c08c4b..6a184d260c7f2e17 100644
--- a/tools/include/uapi/linux/kvm.h
+++ b/tools/include/uapi/linux/kvm.h
@@ -445,7 +445,13 @@ struct kvm_run {
 #define KVM_SYSTEM_EVENT_RESET          2
 #define KVM_SYSTEM_EVENT_CRASH          3
 			__u32 type;
-			__u64 flags;
+			__u32 ndata;
+			union {
+#ifndef __KERNEL__
+				__u64 flags;
+#endif
+				__u64 data[16];
+			};
 		} system_event;
 		/* KVM_EXIT_S390_STSI */
 		struct {
@@ -1144,6 +1150,8 @@ struct kvm_ppc_resize_hpt {
 #define KVM_CAP_S390_MEM_OP_EXTENSION 211
 #define KVM_CAP_PMU_CAPABILITY 212
 #define KVM_CAP_DISABLE_QUIRKS2 213
+/* #define KVM_CAP_VM_TSC_CONTROL 214 */
+#define KVM_CAP_SYSTEM_EVENT_DATA 215
 
 #ifdef KVM_CAP_IRQ_ROUTING
 
-- 
2.35.1