linux-kernel - Re: [PATCH 5/7] perf/x86/amd/core: Add PerfMonV2 counter control

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Message-ID: <YjRkeQ8C2CeMsUx6@hirez.programming.kicks-ass.net>
Date:   Fri, 18 Mar 2022 11:52:41 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Sandipan Das <sandipan.das@....com>
Cc:     linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        x86@...nel.org, bp@...en8.de, dave.hansen@...ux.intel.com,
        acme@...nel.org, mark.rutland@....com,
        alexander.shishkin@...ux.intel.com, namhyung@...nel.org,
        jolsa@...nel.org, tglx@...utronix.de, mingo@...hat.com,
        pbonzini@...hat.com, jmattson@...gle.com, like.xu.linux@...il.com,
        eranian@...gle.com, ananth.narayan@....com, ravi.bangoria@....com,
        santosh.shukla@....com
Subject: Re: [PATCH 5/7] perf/x86/amd/core: Add PerfMonV2 counter control

On Fri, Mar 18, 2022 at 01:32:04PM +0530, Sandipan Das wrote:
> On 3/17/2022 5:16 PM, Peter Zijlstra wrote:

> > First and foremost, *please* tell me your shiny new hardware fixed the
> > terrible behaviour that requires the wait_on_overflow hacks in
> > amd_pmu_disable_all().
> 
> Unfortunately, that workaround is still required.

So much sadness :-(