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Thu, 9 Jul 2026 00:12:45 +0000 (UTC) Date: Wed, 8 Jul 2026 17:12:42 -0700 From: Borislav Petkov To: Namhyung Kim Cc: Babu Moger , Arnaldo Carvalho de Melo , corbet@lwn.net, tony.luck@intel.com, reinette.chatre@intel.com, Dave.Martin@arm.com, james.morse@arm.com, tglx@kernel.org, ben.horgan@arm.com, fenghuay@nvidia.com, skhan@linuxfoundation.org, x86@kernel.org, mingo@redhat.com, dave.hansen@linux.intel.com, hpa@zytor.com, akpm@linux-foundation.org, rdunlap@infradead.org, peterz@infradead.org, feng.tang@linux.alibaba.com, dapeng1.mi@linux.intel.com, elver@google.com, enelsonmoore@gmail.com, kuba@kernel.org, ebiggers@kernel.org, lirongqing@baidu.com, seanjc@google.com, nikunj@amd.com, xin@zytor.com, pawan.kumar.gupta@linux.intel.com, tiala@microsoft.com, chang.seok.bae@intel.com, kprateek.nayak@amd.com, prathyushi.nangia@amd.com, kim.phillips@amd.com, naveen@kernel.org, darwi@linutronix.de, elena.reshetova@intel.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.lendacky@amd.com, eranian@google.com, peternewman@google.com, qinyuntan@linux.alibaba.com Subject: Re: [RESEND PATCH v4 01/15] x86/resctrl: Support Privilege Level Zero Association (PLZA) Message-ID: <20260709001242.GDak7nevAzb45IGkem@fat_crate.local> References: <0af5122c-20df-4aea-8ab4-cba63f71dc3b@amd.com> <20260708232806.GCak7dBi1loq3QLjg7@fat_crate.local> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Hey Namhyung, On Wed, Jul 08, 2026 at 05:00:00PM -0700, Namhyung Kim wrote: > Well.. it's changed as Linus wanted to not update the headers for > trivial changes. The script is still there but it's not running > automatically. For perf, we used to check ioctl and other user-visible > changes for system call tracing. And some headers moved to the > tools/perf/trace/beauty/include directory to sync separately. > > I think the headers will be sync-ed less frequently. So you may need to > update the header for tooling changes manually. I'm reading this as, we should not touch cpufeatures.h in tools/ and let you guys decide when you actually need bits from it? In the sense: only when you really need bits from it, you'll update it and other, unrelated bits which are not needed, can remain different... Or? -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette