From: Andy Lutomirski <luto@kernel.org>
To: X86 ML <x86@kernel.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Borislav Petkov <bpetkov@suse.de>,
Vince Weaver <vincent.weaver@maine.edu>,
Andy Lutomirski <luto@kernel.org>
Subject: [PATCH 0/2] x86/perf: A CR4.PCE bugfix and clarification
Date: Thu, 16 Mar 2017 12:59:38 -0700 [thread overview]
Message-ID: <cover.1489694270.git.luto@kernel.org> (raw)
Hi all-
Vince found a bug in our CR4.PCE handling. While investigating, I
found what looked like another bug but actually wasn't.
Here's a fix for the bug (cc'd to stable) and a comment and lockdep
annotation for why the other non-bug isn't actually a bug.
Andy Lutomirski (2):
x86/perf: Fix CR4.PCE propagation to use active_mm instead of mm
x86/perf: Clarify why x86_pmu_event_mapped() isn't racy
arch/x86/events/core.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
--
2.9.3
next reply other threads:[~2017-03-16 20:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-16 19:59 Andy Lutomirski [this message]
2017-03-16 19:59 ` [PATCH 1/2] x86/perf: Fix CR4.PCE propagation to use active_mm instead of mm Andy Lutomirski
2017-03-17 10:16 ` [tip:perf/urgent] " tip-bot for Andy Lutomirski
2017-03-16 19:59 ` [PATCH 2/2] x86/perf: Clarify why x86_pmu_event_mapped() isn't racy Andy Lutomirski
2017-03-17 10:17 ` [tip:perf/urgent] " tip-bot for Andy Lutomirski
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