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Tue, 12 May 2026 21:16:42 -0700 (PDT) From: Ritesh Harjani (IBM) To: Gautam Menghani , Ian Rogers Cc: peterz@infradead.org, mingo@redhat.com, acme@kernel.org, namhyung@kernel.org, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, adrian.hunter@intel.com, james.clark@linaro.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, maddy@linux.ibm.com Subject: Re: [PATCH] perf kvm stat: Update the exit reason mappings In-Reply-To: Date: Wed, 13 May 2026 09:33:10 +0530 Message-ID: References: <20260512120408.59332-1-gautam@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit ++ linuxppc-dev Gautam Menghani writes: > On Tue, May 12, 2026 at 08:25:08AM -0700, Ian Rogers wrote: >> On Tue, May 12, 2026 at 5:04 AM Gautam Menghani wrote: >> > >> > Sync the exit reason mappings with the mappings in trace_book3s.h >> >> I see: >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/powerpc/kvm/trace_book3s.h >> Would it make sense to have a copy in perf and use the check headers >> code to keep them in sync? >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/perf/check-headers.sh > > I'll take a look at this, thanks > >> >> Could you add the commits that add the H_VIRT and H_FAC_UNAVAIL >> definitions? I don't see them in Linus' tree yet. > > I posted that patch earlier today - https://lore.kernel.org/linuxppc-dev/20260512115724.59299-1-gautam@linux.ibm.com/ > should've pasted the link in the patch > For patches not yet merged and having such a dependency, this could cause confusion. What I generally tend to do in such case is, group this patch (changes in tools/perf/util/kvm-stat-arch/book3s_hv_exits.h) into the same series which adds H_FAC_UNAVAIL to trace_book3s.h [1]. This way it is easier for everyone to keep track of the dependencies. [1]: https://lore.kernel.org/linuxppc-dev/20260512115724.59299-1-gautam@linux.ibm.com/ Note, that we should still cc the relevant mailing lists, reviewers and maintainers to get an Acked-by. Since the changes in this patch are largely powerpc specific, so IMO, it should be ok even if it goes via powerpc tree via a common series, as long as everyone agrees. -ritesh