Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753279AbaJVOUI (ORCPT ); Wed, 22 Oct 2014 10:20:08 -0400 Received: from casper.infradead.org ([85.118.1.10]:58447 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751511AbaJVOUG (ORCPT ); Wed, 22 Oct 2014 10:20:06 -0400 Date: Wed, 22 Oct 2014 16:20:03 +0200 From: Peter Zijlstra To: Alexander Shishkin Cc: Ingo Molnar , linux-kernel@vger.kernel.org, Robert Richter , Frederic Weisbecker , Mike Galbraith , Paul Mackerras , Stephane Eranian , Andi Kleen , kan.liang@intel.com, adrian.hunter@intel.com, acme@infradead.org Subject: Re: [PATCH v5 12/20] x86: perf: intel_pt: Intel PT PMU driver Message-ID: <20141022142003.GQ12706@worktop.programming.kicks-ass.net> References: <1413207948-28202-1-git-send-email-alexander.shishkin@linux.intel.com> <1413207948-28202-13-git-send-email-alexander.shishkin@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1413207948-28202-13-git-send-email-alexander.shishkin@linux.intel.com> User-Agent: Mutt/1.5.22.1 (2013-10-16) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 13, 2014 at 04:45:40PM +0300, Alexander Shishkin wrote: > +++ b/arch/x86/kernel/cpu/perf_event_intel.c > @@ -1528,6 +1528,14 @@ again: > } > > /* > + * Intel PT > + */ > + if (__test_and_clear_bit(55, (unsigned long *)&status)) { > + handled++; > + intel_pt_interrupt(); > + } > + How does the PT interrupt interact with the regular PMI? In particular does it respect stuff like FREEZE_ON_PMI etc? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/