From: Andi Kleen <andi@firstfloor.org>
To: Avi Kivity <avi@redhat.com>
Cc: Don Zickus <dzickus@redhat.com>,
Robert Richter <robert.richter@amd.com>,
"x86@kernel.org" <x86@kernel.org>,
Andi Kleen <andi@firstfloor.org>,
Peter Zijlstra <peterz@infradead.org>,
"ying.huang@intel.com" <ying.huang@intel.com>,
LKML <linux-kernel@vger.kernel.org>,
"paulmck@linux.vnet.ibm.com" <paulmck@linux.vnet.ibm.com>,
"jeremy@goop.org" <jeremy@goop.org>
Subject: Re: [V6][PATCH 4/6] x86, nmi: add in logic to handle multiple events and unknown NMIs
Date: Sun, 2 Oct 2011 15:48:02 +0200 [thread overview]
Message-ID: <20111002134802.GH7761@one.firstfloor.org> (raw)
In-Reply-To: <4E8837D4.5040607@redhat.com>
> Second, I wanted to use NMIs as a way of waking up a vcpu sleeping with
> interrupts disabled (in the context of Jeremy's paravirt spinlock
> patches). Looks like we'll have to use paravirtualization for that.
Just use a mode of perf that doesn't use NMIs.
Interrupt off profiling is rarely needed if at all on modern kernels.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2011-10-02 13:48 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-23 19:17 [V6][PATCH 0/6] x86, nmi: new NMI handling routines Don Zickus
2011-09-23 19:17 ` [V6][PATCH 1/6] x86, nmi: split out nmi from traps.c Don Zickus
2011-09-23 19:17 ` [V6][PATCH 2/6] x86, nmi: create new NMI handler routines Don Zickus
2011-09-23 19:17 ` [V6][PATCH 3/6] x86, nmi: wire up NMI handlers to new routines Don Zickus
2011-09-30 14:25 ` Robert Richter
2011-09-23 19:17 ` [V6][PATCH 4/6] x86, nmi: add in logic to handle multiple events and unknown NMIs Don Zickus
2011-09-26 8:59 ` Peter Zijlstra
2011-09-26 12:55 ` Don Zickus
2011-09-28 10:31 ` Robert Richter
2011-09-28 12:37 ` Don Zickus
2011-09-28 16:51 ` Jeremy Fitzhardinge
2011-09-28 17:44 ` Don Zickus
2011-09-28 17:52 ` Jeremy Fitzhardinge
2011-10-02 10:07 ` Avi Kivity
2011-10-02 13:48 ` Andi Kleen [this message]
2011-10-02 14:04 ` Avi Kivity
2011-10-03 13:13 ` Don Zickus
2011-09-23 19:17 ` [V6][PATCH 5/6] x86, nmi: track NMI usage stats Don Zickus
2011-09-23 19:17 ` [V6][PATCH 6/6] x86, nmi: print out NMI stats in /proc/interrupts Don Zickus
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