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s=arc-20220608; d=hostedemail.com; t=1736541843; a=rsa-sha256; cv=none; b=r/bYHeyfGhnYlCUm3ESw1OFW+nbc9AXsTagtdhzxACEYYTiET9uTKZL4vh64NcadMmV5Y7 fMGTTp9yuYb3dZsijmUvOYQR5n14wa95SxbmcE53+vTjzIJ1/TtQInQzt6a/b9zrWQBu4U i0yRSb3ZG+h5x4jLIq0QyAMCN488oZ8= ARC-Authentication-Results: i=1; imf19.hostedemail.com; dkim=none; spf=pass (imf19.hostedemail.com: domain of riel@shelob.surriel.com designates 96.67.55.147 as permitted sender) smtp.mailfrom=riel@shelob.surriel.com; dmarc=none Received: from fangorn.home.surriel.com ([10.0.13.7]) by shelob.surriel.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.97.1) (envelope-from ) id 1tWLqk-000000006ot-2Iiv; Fri, 10 Jan 2025 15:43:22 -0500 Message-ID: Subject: Re: [PATCH 11/12] x86/mm: enable AMD translation cache extensions From: Rik van Riel To: Borislav Petkov Cc: Tom Lendacky , x86@kernel.org, linux-kernel@vger.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, akpm@linux-foundation.org, nadav.amit@gmail.com, zhengqi.arch@bytedance.com, linux-mm@kvack.org Date: Fri, 10 Jan 2025 15:43:22 -0500 In-Reply-To: <20250110195838.GFZ4F77mf1kgyya5Du@fat_crate.local> References: <20241230175550.4046587-1-riel@surriel.com> <20241230175550.4046587-12-riel@surriel.com> <2cf92ecf-cd14-734a-6dd9-bd489321651e@amd.com> <8a8765c3d4f6154d38e00219cae739245d15cc1e.camel@surriel.com> <20250110195838.GFZ4F77mf1kgyya5Du@fat_crate.local> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.1 (3.54.1-1.fc41) MIME-Version: 1.0 X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: E829A1A0002 X-Stat-Signature: d19e85qdicu9z9ww8frym6s6uq1hzp9j X-Rspam-User: X-HE-Tag: 1736541842-542569 X-HE-Meta: U2FsdGVkX1/7milXX2Kb0maHFzFPeYZt175sMx+4Z6suFxgjwHuwIJnxNPnmGvsUfy0xKKXvvZTdxSX52ap34DsrQl26aQ8SNjpKP8gKCji6S0hPs71UBc02cqwaV7zlk/rYK3iIUoDYrTaTgWbv4dChzGBDGB2AEAXmbgWd3YG2ETtqKFJsnV4R34oPk0kYhQlolBFOlAiIoZwsCwySE8LoGb9KypA6FEYvgXjhlJnkXs9CHhM48EzVBuEC/mPqC5ky4EoSCV8vqYjoIGDfV4OWIIUagA+JmLb3ufv1LIiDhIX3NVdFLo+Du/+5h3g8odUfoHiYkluf1sRV8Qt2NEc7g/95H6FbLIyY/fC7yEOWauxqcfs0pAHVNtXJ3gdmufzBWX/lRmjdnZ6UN0T/tU6lVonVAtFAxIdS9PLZTCpWIfp1LD4OztGES2QKGT1iQJj5XgrNbr7jcWGddyuokkm//Q9tgq4L8xyh/NaZPgCpIEhFboFNOxz6/MoLHdVk8aK9estL5aLQXIxhrYPJd1T2XpNesr/QsNt+QstfYoRlUQXqHXlPBLfDvgFMIz3iJofR6EQ/FWCC6iYG5vWiCeC0darYnlepEh0OCNa1fEPKT8EEvuDooJTFWPcTCOrxPrKx9nmHQq0+f7l8sRuWUiizY7J2EHhwJXxfD2kLx63fyRjr0RRj40YrWtoXYnwEA7veyCTs5MfGVIWZNWWqms2RzzuNmtts3et2a3zHp7E7eWalHBQh3dQOg8w+2OPFfYF01ysjhSHWNCkm5ZG+LVkkuhLhii6lGVZ9NKO6AAlPA9YwrNWscMSFhDpv2VefIi5Ecvmnne8l8xiq5aV6E5QuM+PAj9gYbcKkadWzcaV2JxdDXK6Ui7X+Zhp5OoiJ/WAZCTCDBSnfe89cbaH0rqtdF1ibJ6NS+xq3OvaluhTigD7BoeW75VBay83OlokUt77BRDUZ05F9uexDsJA dWSgPZWH WAjAPUEp+xUk6933BLDqXxJQV/eKc2fOCMO+NPc5fi3PjOaunfdsj6s/ZNNwEgDe3KR/rs318sqsVL/rqZwdeuKYIPDGHss1KV6nnLbmtWrJxle0zLRr/tnSk3DKxbfzmmyEU2Nb7/oxLIdIgzNdqosjqTksIu2HTLL3lwFhqQtGQaDyZVC6xTXmC7Ad5AFvhuprs8FT0qsAE9L0QdUlsGwtS0CD7PYH54HqyxG0ubEp5VAaAIbSpwGdzBCJgiS11u++MKXNW8vGctKrTeuc2rUe01NvBKYj9cdqkz3tZDLwBIWd3KdP5aos1io8S/63fjhK77gONtM49cVq4/HLE1LYCVvylz6/WUjYlLNT5l01UkQs= 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 Fri, 2025-01-10 at 20:58 +0100, Borislav Petkov wrote: > On Fri, Jan 10, 2025 at 02:45:27PM -0500, Rik van Riel wrote: > > Is this the right location for that code, or > > do I need to move it somewhere else to > > guarantee TCE gets enabled on every CPU? >=20 > Didn't I answer this already? >=20 > https://lore.kernel.org/r/20250102115237.GGZ3Z-BUqBauHEfB10@fat_crate.loc= al >=20 > And you should put it in init_amd() as it runs on every CPU. >=20 Thank you for telling me about init_amd(). I wasn't sure where in amd.c to put it. --=20 All Rights Reversed.