linux.git/tools, branch v5.19-rc5 Linux kernel source tree Merge tag 'perf-tools-fixes-for-v5.19-2022-07-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux 2022-07-02T16:28:36+00:00 Linus Torvalds torvalds@linux-foundation.org 2022-07-02T16:28:36+00:00 bb7c51268776941b7533374caabcaaed302b91e0 Pull perf tools fixes from Arnaldo Carvalho de Melo: - BPF program info linear (BPIL) data is accessed assuming 64-bit alignment resulting in undefined behavior as the data is just byte aligned. Fix it, Found using -fsanitize=undefined. - Fix 'perf offcpu' build on old kernels wrt task_struct's state/__state field. - Fix perf_event_attr.sample_type setting on the 'offcpu-time' event synthesized by the 'perf offcpu' tool. - Don't bail out when synthesizing PERF_RECORD_ events for pre-existing threads when one goes away while parsing its procfs entries. - Don't sort the task scan result from /proc, its not needed and introduces bugs when the main thread isn't the first one to be processed. - Fix uninitialized 'offset' variable on aarch64 in the unwind code. - Sync KVM headers with the kernel sources. * tag 'perf-tools-fixes-for-v5.19-2022-07-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf synthetic-events: Ignore dead threads during event synthesis perf synthetic-events: Don't sort the task scan result from /proc perf unwind: Fix unitialized 'offset' variable on aarch64 tools headers UAPI: Sync linux/kvm.h with the kernel sources perf bpf: 8 byte align bpil data tools kvm headers arm64: Update KVM headers from the kernel sources perf offcpu: Accept allowed sample types only perf offcpu: Fix build failure on old kernels 
Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - BPF program info linear (BPIL) data is accessed assuming 64-bit
   alignment resulting in undefined behavior as the data is just byte
   aligned. Fix it, Found using -fsanitize=undefined.

 - Fix 'perf offcpu' build on old kernels wrt task_struct's
   state/__state field.

 - Fix perf_event_attr.sample_type setting on the 'offcpu-time' event
   synthesized by the 'perf offcpu' tool.

 - Don't bail out when synthesizing PERF_RECORD_ events for pre-existing
   threads when one goes away while parsing its procfs entries.

 - Don't sort the task scan result from /proc, its not needed and
   introduces bugs when the main thread isn't the first one to be
   processed.

 - Fix uninitialized 'offset' variable on aarch64 in the unwind code.

 - Sync KVM headers with the kernel sources.

* tag 'perf-tools-fixes-for-v5.19-2022-07-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf synthetic-events: Ignore dead threads during event synthesis
  perf synthetic-events: Don't sort the task scan result from /proc
  perf unwind: Fix unitialized 'offset' variable on aarch64
  tools headers UAPI: Sync linux/kvm.h with the kernel sources
  perf bpf: 8 byte align bpil data
  tools kvm headers arm64: Update KVM headers from the kernel sources
  perf offcpu: Accept allowed sample types only
  perf offcpu: Fix build failure on old kernels
perf synthetic-events: Ignore dead threads during event synthesis 2022-07-02T12:22:26+00:00 Namhyung Kim namhyung@kernel.org 2022-07-01T20:54:58+00:00 ff898552fb32d255517fb0676f9fa500664c484d When it synthesize various task events, it scans the list of task first and then accesses later. There's a window threads can die between the two and proc entries may not be available. Instead of bailing out, we can ignore that thread and move on. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20220701205458.985106-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 
When it synthesize various task events, it scans the list of task
first and then accesses later.  There's a window threads can die
between the two and proc entries may not be available.

Instead of bailing out, we can ignore that thread and move on.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20220701205458.985106-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
perf synthetic-events: Don't sort the task scan result from /proc 2022-07-02T12:21:41+00:00 Namhyung Kim namhyung@kernel.org 2022-07-01T20:54:57+00:00 363afa3aef24f5e08df6a539f5dc3aae4cddcc1a It should not sort the result as procfs already returns a proper ordering of tasks. Actually sorting the order caused problems that it doesn't guararantee to process the main thread first. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20220701205458.985106-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 
It should not sort the result as procfs already returns a proper
ordering of tasks.  Actually sorting the order caused problems that it
doesn't guararantee to process the main thread first.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20220701205458.985106-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
perf unwind: Fix unitialized 'offset' variable on aarch64 2022-07-02T12:16:52+00:00 Ivan Babrou ivan@cloudflare.com 2022-07-01T18:20:46+00:00 5eb502b2e1ae1ab052cdf6bdd7615217e8517360 Commit dc2cf4ca866f5715 ("perf unwind: Fix segbase for ld.lld linked objects") uncovered the following issue on aarch64: util/unwind-libunwind-local.c: In function 'find_proc_info': util/unwind-libunwind-local.c:386:28: error: 'offset' may be used uninitialized in this function [-Werror=maybe-uninitialized] 386 | if (ofs > 0) { | ^ util/unwind-libunwind-local.c:199:22: note: 'offset' was declared here 199 | u64 address, offset; | ^~~~~~ util/unwind-libunwind-local.c:371:20: error: 'offset' may be used uninitialized in this function [-Werror=maybe-uninitialized] 371 | if (ofs <= 0) { | ^ util/unwind-libunwind-local.c:199:22: note: 'offset' was declared here 199 | u64 address, offset; | ^~~~~~ util/unwind-libunwind-local.c:363:20: error: 'offset' may be used uninitialized in this function [-Werror=maybe-uninitialized] 363 | if (ofs <= 0) { | ^ util/unwind-libunwind-local.c:199:22: note: 'offset' was declared here 199 | u64 address, offset; | ^~~~~~ In file included from util/libunwind/arm64.c:37: Fixes: dc2cf4ca866f5715 ("perf unwind: Fix segbase for ld.lld linked objects") Signed-off-by: Ivan Babrou <ivan@cloudflare.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Fangrui Song <maskray@google.com> Cc: Ian Rogers <irogers@google.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: kernel-team@cloudflare.com Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20220701182046.12589-1-ivan@cloudflare.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 
Commit dc2cf4ca866f5715 ("perf unwind: Fix segbase for ld.lld linked
objects") uncovered the following issue on aarch64:

    util/unwind-libunwind-local.c: In function 'find_proc_info':
    util/unwind-libunwind-local.c:386:28: error: 'offset' may be used uninitialized in this function [-Werror=maybe-uninitialized]
    386 |                         if (ofs > 0) {
        |                            ^
    util/unwind-libunwind-local.c:199:22: note: 'offset' was declared here
    199 |         u64 address, offset;
        |                      ^~~~~~
    util/unwind-libunwind-local.c:371:20: error: 'offset' may be used uninitialized in this function [-Werror=maybe-uninitialized]
    371 |                 if (ofs <= 0) {
        |                    ^
    util/unwind-libunwind-local.c:199:22: note: 'offset' was declared here
    199 |         u64 address, offset;
        |                      ^~~~~~
    util/unwind-libunwind-local.c:363:20: error: 'offset' may be used uninitialized in this function [-Werror=maybe-uninitialized]
    363 |                 if (ofs <= 0) {
        |                    ^
    util/unwind-libunwind-local.c:199:22: note: 'offset' was declared here
    199 |         u64 address, offset;
        |                      ^~~~~~
    In file included from util/libunwind/arm64.c:37:

Fixes: dc2cf4ca866f5715 ("perf unwind: Fix segbase for ld.lld linked objects")
Signed-off-by: Ivan Babrou <ivan@cloudflare.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: kernel-team@cloudflare.com
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20220701182046.12589-1-ivan@cloudflare.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Merge tag 'net-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-06-30T22:26:55+00:00 Linus Torvalds torvalds@linux-foundation.org 2022-06-30T22:26:55+00:00 5e8379351dbde61ea383e514f0f9ecb2c047cf4e Pull networking fixes from Jakub Kicinski: "Including fixes from netfilter. Current release - new code bugs: - clear msg_get_inq in __sys_recvfrom() and __copy_msghdr_from_user() - mptcp: - invoke MP_FAIL response only when needed - fix shutdown vs fallback race - consistent map handling on failure - octeon_ep: use bitwise AND Previous releases - regressions: - tipc: move bc link creation back to tipc_node_create, fix NPD Previous releases - always broken: - tcp: add a missing nf_reset_ct() in 3WHS handling to prevent socket buffered skbs from keeping refcount on the conntrack module - ipv6: take care of disable_policy when restoring routes - tun: make sure to always disable and unlink NAPI instances - phy: don't trigger state machine while in suspend - netfilter: nf_tables: avoid skb access on nf_stolen - asix: fix "can't send until first packet is send" issue - usb: asix: do not force pause frames support - nxp-nci: don't issue a zero length i2c_master_read() Misc: - ncsi: allow use of proper "mellanox" DT vendor prefix - act_api: add a message for user space if any actions were already flushed before the error was hit" * tag 'net-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (55 commits) net: dsa: felix: fix race between reading PSFP stats and port stats selftest: tun: add test for NAPI dismantle net: tun: avoid disabling NAPI twice net: sparx5: mdb add/del handle non-sparx5 devices net: sfp: fix memory leak in sfp_probe() mlxsw: spectrum_router: Fix rollback in tunnel next hop init net: rose: fix UAF bugs caused by timer handler net: usb: ax88179_178a: Fix packet receiving net: bonding: fix use-after-free after 802.3ad slave unbind ipv6: fix lockdep splat in in6_dump_addrs() net: phy: ax88772a: fix lost pause advertisement configuration net: phy: Don't trigger state machine while in suspend usbnet: fix memory allocation in helpers selftests net: fix kselftest net fatal error NFC: nxp-nci: don't print header length mismatch on i2c error NFC: nxp-nci: Don't issue a zero length i2c_master_read() net: tipc: fix possible refcount leak in tipc_sk_create() nfc: nfcmrvl: Fix irq_of_parse_and_map() return value net: ipv6: unexport __init-annotated seg6_hmac_net_init() ipv6/sit: fix ipip6_tunnel_get_prl return value ... 
Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter.

  Current release - new code bugs:

   - clear msg_get_inq in __sys_recvfrom() and __copy_msghdr_from_user()

   - mptcp:
      - invoke MP_FAIL response only when needed
      - fix shutdown vs fallback race
      - consistent map handling on failure

   - octeon_ep: use bitwise AND

  Previous releases - regressions:

   - tipc: move bc link creation back to tipc_node_create, fix NPD

  Previous releases - always broken:

   - tcp: add a missing nf_reset_ct() in 3WHS handling to prevent socket
     buffered skbs from keeping refcount on the conntrack module

   - ipv6: take care of disable_policy when restoring routes

   - tun: make sure to always disable and unlink NAPI instances

   - phy: don't trigger state machine while in suspend

   - netfilter: nf_tables: avoid skb access on nf_stolen

   - asix: fix "can't send until first packet is send" issue

   - usb: asix: do not force pause frames support

   - nxp-nci: don't issue a zero length i2c_master_read()

  Misc:

   - ncsi: allow use of proper "mellanox" DT vendor prefix

   - act_api: add a message for user space if any actions were already
     flushed before the error was hit"

* tag 'net-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (55 commits)
  net: dsa: felix: fix race between reading PSFP stats and port stats
  selftest: tun: add test for NAPI dismantle
  net: tun: avoid disabling NAPI twice
  net: sparx5: mdb add/del handle non-sparx5 devices
  net: sfp: fix memory leak in sfp_probe()
  mlxsw: spectrum_router: Fix rollback in tunnel next hop init
  net: rose: fix UAF bugs caused by timer handler
  net: usb: ax88179_178a: Fix packet receiving
  net: bonding: fix use-after-free after 802.3ad slave unbind
  ipv6: fix lockdep splat in in6_dump_addrs()
  net: phy: ax88772a: fix lost pause advertisement configuration
  net: phy: Don't trigger state machine while in suspend
  usbnet: fix memory allocation in helpers
  selftests net: fix kselftest net fatal error
  NFC: nxp-nci: don't print header length mismatch on i2c error
  NFC: nxp-nci: Don't issue a zero length i2c_master_read()
  net: tipc: fix possible refcount leak in tipc_sk_create()
  nfc: nfcmrvl: Fix irq_of_parse_and_map() return value
  net: ipv6: unexport __init-annotated seg6_hmac_net_init()
  ipv6/sit: fix ipip6_tunnel_get_prl return value
  ...
selftest: tun: add test for NAPI dismantle 2022-06-30T18:34:10+00:00 Jakub Kicinski kuba@kernel.org 2022-06-29T18:19:11+00:00 839b92fede7ba308f1a475aa00fea55f63b7fccf Being lazy does not pay, add the test for various ordering of tun queue close / detach / destroy. Link: https://lore.kernel.org/r/20220629181911.372047-2-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Being lazy does not pay, add the test for various
ordering of tun queue close / detach / destroy.

Link: https://lore.kernel.org/r/20220629181911.372047-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
selftests net: fix kselftest net fatal error 2022-06-30T03:15:57+00:00 Coleman Dietsch dietschc@csp.edu 2022-06-28T17:47:44+00:00 7b92aa9e613508cbaa29dd35bf27db4c35628b10 The incorrect path is causing the following error when trying to run net kselftests: In file included from bpf/nat6to4.c:43: ../../../lib/bpf/bpf_helpers.h:11:10: fatal error: 'bpf_helper_defs.h' file not found ^~~~~~~~~~~~~~~~~~~ 1 error generated. Fixes: cf67838c4422 ("selftests net: fix bpf build error") Signed-off-by: Coleman Dietsch <dietschc@csp.edu> Link: https://lore.kernel.org/r/20220628174744.7908-1-dietschc@csp.edu Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
The incorrect path is causing the following error when trying to run net
kselftests:

In file included from bpf/nat6to4.c:43:
../../../lib/bpf/bpf_helpers.h:11:10: fatal error: 'bpf_helper_defs.h' file not found
         ^~~~~~~~~~~~~~~~~~~
1 error generated.

Fixes: cf67838c4422 ("selftests net: fix bpf build error")
Signed-off-by: Coleman Dietsch <dietschc@csp.edu>
Link: https://lore.kernel.org/r/20220628174744.7908-1-dietschc@csp.edu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
selftests: mptcp: Initialize variables to quiet gcc 12 warnings 2022-06-29T03:45:43+00:00 Mat Martineau mathew.j.martineau@linux.intel.com 2022-06-28T01:02:43+00:00 fd37c2ecb21f7aee04ccca5f561469f07d00063c In a few MPTCP selftest tools, gcc 12 complains that the 'sock' variable might be used uninitialized. This is a false positive because the only code path that could lead to uninitialized access is where getaddrinfo() fails, but the local xgetaddrinfo() wrapper exits if such a failure occurs. Initialize the 'sock' variable anyway to allow the tools to build with gcc 12. Fixes: 048d19d444be ("mptcp: add basic kselftest for mptcp") Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
In a few MPTCP selftest tools, gcc 12 complains that the 'sock' variable
might be used uninitialized. This is a false positive because the only
code path that could lead to uninitialized access is where getaddrinfo()
fails, but the local xgetaddrinfo() wrapper exits if such a failure
occurs.

Initialize the 'sock' variable anyway to allow the tools to build with
gcc 12.

Fixes: 048d19d444be ("mptcp: add basic kselftest for mptcp")
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
selftests: mptcp: more stable diag tests 2022-06-29T03:45:43+00:00 Paolo Abeni pabeni@redhat.com 2022-06-28T01:02:41+00:00 42fb6cddec3b306c9f6ef136b6438e0de1836431 The mentioned test-case still use an hard-coded-len sleep to wait for a relative large number of connection to be established. On very slow VM and with debug build such timeout could be exceeded, causing failures in our CI. Address the issue polling for the expected condition several times, up to an unreasonable high amount of time. On reasonably fast system the self-tests will be faster then before, on very slow one we will still catch the correct condition. Fixes: df62f2ec3df6 ("selftests/mptcp: add diag interface tests") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
The mentioned test-case still use an hard-coded-len sleep to
wait for a relative large number of connection to be established.

On very slow VM and with debug build such timeout could be exceeded,
causing failures in our CI.

Address the issue polling for the expected condition several times,
up to an unreasonable high amount of time. On reasonably fast system
the self-tests will be faster then before, on very slow one we will
still catch the correct condition.

Fixes: df62f2ec3df6 ("selftests/mptcp: add diag interface tests")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
tools headers UAPI: Sync linux/kvm.h with the kernel sources 2022-06-28T17:20:22+00:00 Arnaldo Carvalho de Melo acme@redhat.com 2021-05-09T12:39:02+00:00 7fe718fb8f3f543da1f04ca08bf652dd2afb55f8 To pick the changes in: bfbab44568779e16 ("KVM: arm64: Implement PSCI SYSTEM_SUSPEND") 7b33a09d036ffd9a ("KVM: arm64: Add support for userspace to suspend a vCPU") ffbb61d09fc56c85 ("KVM: x86: Accept KVM_[GS]ET_TSC_KHZ as a VM ioctl.") 661a20fab7d156cf ("KVM: x86/xen: Advertise and document KVM_XEN_HVM_CONFIG_EVTCHN_SEND") fde0451be8fb3208 ("KVM: x86/xen: Support per-vCPU event channel upcall via local APIC") 28d1629f751c4a5f ("KVM: x86/xen: Kernel acceleration for XENVER_version") 536395260582be74 ("KVM: x86/xen: handle PV timers oneshot mode") 942c2490c23f2800 ("KVM: x86/xen: Add KVM_XEN_VCPU_ATTR_TYPE_VCPU_ID") 2fd6df2f2b47d430 ("KVM: x86/xen: intercept EVTCHNOP_send from guests") 35025735a79eaa89 ("KVM: x86/xen: Support direct injection of event channel events") That automatically adds support for this new ioctl: $ tools/perf/trace/beauty/kvm_ioctl.sh > before $ cp include/uapi/linux/kvm.h tools/include/uapi/linux/kvm.h $ tools/perf/trace/beauty/kvm_ioctl.sh > after $ diff -u before after --- before 2022-06-28 12:13:07.281150509 -0300 +++ after 2022-06-28 12:13:16.423392896 -0300 @@ -98,6 +98,7 @@ [0xcc] = "GET_SREGS2", [0xcd] = "SET_SREGS2", [0xce] = "GET_STATS_FD", + [0xd0] = "XEN_HVM_EVTCHN_SEND", [0xe0] = "CREATE_DEVICE", [0xe1] = "SET_DEVICE_ATTR", [0xe2] = "GET_DEVICE_ATTR", $ This silences these 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@intel.com> Cc: David Woodhouse <dwmw@amazon.co.uk> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Oliver Upton <oupton@google.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Link: http://lore.kernel.org/lkml/Yrs4RE+qfgTaWdAt@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 
To pick the changes in:

  bfbab44568779e16 ("KVM: arm64: Implement PSCI SYSTEM_SUSPEND")
  7b33a09d036ffd9a ("KVM: arm64: Add support for userspace to suspend a vCPU")
  ffbb61d09fc56c85 ("KVM: x86: Accept KVM_[GS]ET_TSC_KHZ as a VM ioctl.")
  661a20fab7d156cf ("KVM: x86/xen: Advertise and document KVM_XEN_HVM_CONFIG_EVTCHN_SEND")
  fde0451be8fb3208 ("KVM: x86/xen: Support per-vCPU event channel upcall via local APIC")
  28d1629f751c4a5f ("KVM: x86/xen: Kernel acceleration for XENVER_version")
  536395260582be74 ("KVM: x86/xen: handle PV timers oneshot mode")
  942c2490c23f2800 ("KVM: x86/xen: Add KVM_XEN_VCPU_ATTR_TYPE_VCPU_ID")
  2fd6df2f2b47d430 ("KVM: x86/xen: intercept EVTCHNOP_send from guests")
  35025735a79eaa89 ("KVM: x86/xen: Support direct injection of event channel events")

That automatically adds support for this new ioctl:

  $ tools/perf/trace/beauty/kvm_ioctl.sh > before
  $ cp include/uapi/linux/kvm.h tools/include/uapi/linux/kvm.h
  $ tools/perf/trace/beauty/kvm_ioctl.sh > after
  $ diff -u before after
  --- before	2022-06-28 12:13:07.281150509 -0300
  +++ after	2022-06-28 12:13:16.423392896 -0300
  @@ -98,6 +98,7 @@
   	[0xcc] = "GET_SREGS2",
   	[0xcd] = "SET_SREGS2",
   	[0xce] = "GET_STATS_FD",
  +	[0xd0] = "XEN_HVM_EVTCHN_SEND",
   	[0xe0] = "CREATE_DEVICE",
   	[0xe1] = "SET_DEVICE_ATTR",
   	[0xe2] = "GET_DEVICE_ATTR",
  $

This silences these 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@intel.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Oliver Upton <oupton@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Link: http://lore.kernel.org/lkml/Yrs4RE+qfgTaWdAt@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>