linux-kernel - Re: [PATCH 0/6] perf/amd: Zen4 IBS extensions support

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Message-ID: <20220425203222.GN2731@worktop.programming.kicks-ass.net>
Date:   Mon, 25 Apr 2022 22:32:22 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Ravi Bangoria <ravi.bangoria@....com>
Cc:     acme@...nel.org, mingo@...hat.com, mark.rutland@....com,
        jolsa@...nel.org, namhyung@...nel.org, tglx@...utronix.de,
        bp@...en8.de, irogers@...gle.com, yao.jin@...ux.intel.com,
        james.clark@....com, leo.yan@...aro.org, kan.liang@...ux.intel.com,
        ak@...ux.intel.com, eranian@...gle.com, like.xu.linux@...il.com,
        x86@...nel.org, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org, sandipan.das@....com,
        ananth.narayan@....com, kim.phillips@....com, rrichter@....com,
        santosh.shukla@....com
Subject: Re: [PATCH 0/6] perf/amd: Zen4 IBS extensions support

On Mon, Apr 25, 2022 at 10:13:17AM +0530, Ravi Bangoria wrote:
> IBS support has been enhanced with two new features in upcoming uarch:
> 1. DataSrc extension and 2. L3 Miss Filtering capability. Both are
> indicated by CPUID_Fn8000001B_EAX bit 11.

Hi Ravi, could you perhaps also look at fixing this existing IBS
problem?

  https://lkml.kernel.org/r/YlVPpVC8chepOdzJ@hirez.programming.kicks-ass.net