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Wed, 21 May 2025 11:49:02 +0000 (UTC) Date: Wed, 21 May 2025 13:49:01 +0200 From: Borislav Petkov To: Rik van Riel Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, kernel-team@meta.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, nadav.amit@gmail.com, Yu-cheng Yu Subject: Re: [RFC v2 2/9] x86/mm: Introduce Remote Action Request MSRs Message-ID: <20250521114901.GBaC29rWZ4IyVyZacP@fat_crate.local> References: <20250520010350.1740223-1-riel@surriel.com> <20250520010350.1740223-3-riel@surriel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20250520010350.1740223-3-riel@surriel.com> X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: AFCC04000A X-Stat-Signature: 6ut71tcqtbcktoujqj7e4hrsz58sm1mj X-HE-Tag: 1747828163-587543 X-HE-Meta: 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 nycTQki3 pTYfT/vBmQG3Ojp9wH18yAvIM5qzyR1G95LsGwMB/dG6IVUJkkIVymg9YuguzTqNinJdLq51V1Ji8nJq2t/HiwOUh9g7DU+l2YSYI6y+P2n32gE6AlvdKpWAFddwKVeEznp4/lzn3uMoyGo6LyqIANyOAWm8VNJnvv9oujmo7FnLMvhQ+ItiisGNG8w+39TGywLjGE0vEO1boz5wBW9Pfh0gyr3qXhU/WP66mDiOrN8N3I+GNcnpgR8HMVNOsXyr+EYgOJ34KqBmD6K19nTDTDTyIw3cuNXwQ2Kk0yPj2KRweXASDYvHxyIu5NgQcRymZWS49ARLvLGllDuf93P6YkZKLtuq6eBWyOVfvw/hg4pDE87NubvOIZSCRT3rsINuXs4KHmhqQ3PqQ4SkThHhEqyBpSUMGWkrJVYCqJm4Tt22YmNs= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, May 19, 2025 at 09:02:27PM -0400, Rik van Riel wrote: > From: Yu-cheng Yu > > Remote Action Request (RAR) is a TLB flushing broadcast facility. > This patch introduces RAR MSRs. RAR is introduced in later patches. > > There are five RAR MSRs: > > MSR_CORE_CAPABILITIES > MSR_IA32_RAR_CTRL > MSR_IA32_RAR_ACT_VEC > MSR_IA32_RAR_PAYLOAD_BASE > MSR_IA32_RAR_INFO > > Signed-off-by: Yu-cheng Yu > Signed-off-by: Rik van Riel > --- > arch/x86/include/asm/msr-index.h | 11 +++++++++++ > 1 file changed, 11 insertions(+) You can merge this one with the previous one. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette