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From: Ravi Bangoria <ravi.bangoria@amd.com>
To: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Stephane Eranian <eranian@google.com>,
	Sandipan Das <sandipan.das@amd.com>,
	Namhyung Kim <namhyung@kernel.org>,
	Ravi Bangoria <ravi.bangoria@amd.com>
Subject: Re: [PATCH v4 0/5] perf: Relax privilege restriction on AMD IBS
Date: Thu, 24 Oct 2024 11:35:01 +0530	[thread overview]
Message-ID: <3cbcf862-0608-4174-a286-dc73a9b9fc7c@amd.com> (raw)
In-Reply-To: <20241023000928.957077-1-namhyung@kernel.org>

> This is RFC v3 to allow AMD IBS to regular users on the default settings
> where kernel-level profiling is disabled (perf_event_paranoid=2).
> Currently AMD IBS doesn't allow any kind of exclusion in the event
> attribute.  But users needs to set attr.exclude_kernel to open an event
> on such an environment.

FWIW, IBS code had few issues with sample period computation which can
lead to SW programing unsupported values to IBS MSRs. Since this series
expose IBS to unprivileged users, below series is a logical dependency:

https://lore.kernel.org/r/20241007034810.754-1-ravi.bangoria@amd.com

Thanks,
Ravi

      parent reply	other threads:[~2024-10-24  6:05 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-23  0:09 Namhyung Kim
2024-10-23  0:09 ` [PATCH v4 1/5] perf/core: Add PERF_FORMAT_DROPPED Namhyung Kim
2024-10-23 11:05   ` Michael Ellerman
2024-10-23 18:30     ` Namhyung Kim
2024-10-24  4:43       ` Ravi Bangoria
2024-10-28 18:53         ` Namhyung Kim
2024-10-23  0:09 ` [PATCH v4 2/5] perf/core: Export perf_exclude_event() Namhyung Kim
2024-10-23  7:33   ` Thomas Richter
2024-10-23  0:09 ` [PATCH v4 3/5] perf/core: Account dropped samples from BPF Namhyung Kim
2024-10-23 16:12   ` Andrii Nakryiko
2024-10-23 18:47     ` Namhyung Kim
2024-10-23 19:13       ` Andrii Nakryiko
2024-10-23 20:32         ` Namhyung Kim
2024-10-23 21:24           ` Andrii Nakryiko
2024-10-28 18:56             ` Namhyung Kim
2024-10-23  0:09 ` [PATCH v4 4/5] perf/powerpc: Count dropped samples in core-book3s PMU Namhyung Kim
2024-10-23  0:09 ` [PATCH v4 5/5] perf/x86: Relax privilege filter restriction on AMD IBS Namhyung Kim
2024-10-24  6:05 ` Ravi Bangoria [this message]

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