linux-kernel - Re: [GIT PULL] perf fixes

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Message-ID: <Yzq/hvPKqiCF+QkH@gmail.com>
Date:   Mon, 3 Oct 2022 12:55:02 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>
Subject: Re: [GIT PULL] perf fixes


* Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> On Sun, Oct 2, 2022 at 3:56 AM Ingo Molnar <mingo@...nel.org> wrote:
> >
> >  - Fix KVM guest PEBS register handling.
> 
> I wondered why my diffstat wasn't the same as yours, but it turns out
> it's because I got this one from the kvm tree earlier.

Oh - indeed, didn't notice that.

> It all merged fine, just surprising.

Yeah. These are the two commits:

  [perf/urgent]     f2aeea57504c ("perf/x86/core: Completely disable guest PEBS via guest's global_ctrl")
  [KVM tree]        87693645ae89 ("perf/x86/core: Completely disable guest PEBS via guest's global_ctrl")

Just to make sure I double checked that they are identical:

  thule:~/tip> git log -1 -p f2aeea57504c | grep -A 100 "^@@" | tail +2 | sha1sum 
  e758bebe3046ef6a51d19d7b5498e165dc8e37be  -

  thule:~/tip> git log -1 -p 87693645ae89 | grep -A 100 "^@@" | tail +2 | sha1sum 
  e758bebe3046ef6a51d19d7b5498e165dc8e37be  -

Paolo applied the fix a couple of hours after Peter, but we
never noticed the overlap & the perf/urgent base didn't have
Paolo's commit so I didn't notice when sending the tree.

Sorry about that!

Thanks,

	Ingo