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Peter Anvin" , "Rafael J. Wysocki" , Pavel Machek , Greg Kroah-Hartman , Danilo Krummrich , Johan Hovold , Sebastian Andrzej Siewior , Mathieu Desnoyers , Jiayuan Chen , "Steven Rostedt (Google)" , "Vineeth Pillai (Google)" , Frederic Weisbecker , Andi Kleen , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, driver-core@lists.linux.dev Subject: Re: [PATCH 0/6] perf/x86/intel/pt: Fix tracing across kexec, kdump and suspend Message-ID: <20261102101034.GV1779021@noisy.programming.kicks-ass.net> References: <20261102074039.26983-1-adrian.hunter@intel.com> X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261102074039.26983-1-adrian.hunter@intel.com> On Mon, Nov 02, 2026 at 09:40:33AM +0200, Adrian Hunter wrote: > Hi > > Intel PT writes trace data directly to physical memory, so tracing must > be stopped whenever the trace buffers or the hardware state describing > them can no longer be relied on. This series fixes several cases where > that does not currently happen: Same is true for PEBS, no? I also saw that AMD/IBS is already registering a syscore handler. Perhaps it should be a perf wide thing, than than having individual bits and pieces do their own thing?