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From: Andi Kleen <ak@linux.intel.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: kan.liang@intel.com, mingo@redhat.com,
	linux-kernel@vger.kernel.org, acme@kernel.org, jolsa@redhat.com,
	tglx@linutronix.de, eranian@google.com
Subject: Re: [PATCH V5] perf: Add PERF_SAMPLE_PHYS_ADDR
Date: Tue, 22 Aug 2017 10:31:04 -0700	[thread overview]
Message-ID: <20170822173104.GY28715@tassilo.jf.intel.com> (raw)
In-Reply-To: <20170822170736.GI32112@worktop.programming.kicks-ass.net>

> Is this in any way x86 specific? AFAICT this should work in generic code
> as long as data->addr is provided.

It won't work on architectures that split the address space for user/kernel
(if TASK_SIZE is meaningless). But perhaps some generic config for that would
work.

-Andi

      parent reply	other threads:[~2017-08-22 17:31 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-17 18:17 [PATCH V5] perf: Add PERF_SAMPLE_PHYS_ADDR kan.liang
2017-08-22 16:56 ` Peter Zijlstra
2017-08-22 17:58   ` Liang, Kan
2017-08-22 18:21     ` Peter Zijlstra
2017-08-22 17:07 ` Peter Zijlstra
2017-08-22 17:15   ` Liang, Kan
2017-08-22 17:31   ` Andi Kleen [this message]

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