From patchwork Thu Feb 6 04:43:26 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rik van Riel X-Patchwork-Id: 13962183 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96546C0219B for ; Thu, 6 Feb 2025 04:45:23 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 426326B0089; Wed, 5 Feb 2025 23:45:13 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id D5A496B0082; Wed, 5 Feb 2025 23:45:12 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A4AA16B008C; Wed, 5 Feb 2025 23:45:12 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 3157C6B008A for ; 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b=ejrSXvg6qMW/jeBIBev4JhTDF7LazIlcTkaSGNvd3/GhS5CxAVbr586688/Q/vYS0ESAaa gprvSttntaYQVXttbQVFujyE+yblGcubpeNLEVWLvPTmPMZdb4Xy+nUP4gjk/ov85e8nBA qMs4Rti5IOqgxx5bBO9eQSfsiyU87d0= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1738817110; a=rsa-sha256; cv=none; b=VtfAHvoTBsJzBFerjfpXeIzKgmeqaJmzH63Yo/uyGuMgdeCnExjHQSMtvUsNWnJvaUSNgT Md+7HcCZfytKTBXIq7Mr+Dq0aEY6O1liEFuuZ4B8DFAim4qawD61wQRjqLVi/RWFryTRH8 7/Knp+4Dix5Mzkur/RzrNBwYKoRZyoo= ARC-Authentication-Results: i=1; imf06.hostedemail.com; dkim=none; spf=pass (imf06.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 1tftjw-000000004tQ-2Ndp; Wed, 05 Feb 2025 23:43:48 -0500 From: Rik van Riel To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, bp@alien8.de, peterz@infradead.org, dave.hansen@linux.intel.com, zhengqi.arch@bytedance.com, nadav.amit@gmail.com, thomas.lendacky@amd.com, kernel-team@meta.com, linux-mm@kvack.org, akpm@linux-foundation.org, jannh@google.com, mhklinux@outlook.com, andrew.cooper3@citrix.com, Rik van Riel , Manali Shukla Subject: [PATCH v9 07/12] x86/mm: use INVLPGB in flush_tlb_all Date: Wed, 5 Feb 2025 23:43:26 -0500 Message-ID: <20250206044346.3810242-8-riel@surriel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250206044346.3810242-1-riel@surriel.com> References: <20250206044346.3810242-1-riel@surriel.com> MIME-Version: 1.0 X-Stat-Signature: p7akxoim3bn48quczyajci4afzphb7ue X-Rspamd-Queue-Id: 58C1418000B X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1738817110-925619 X-HE-Meta: 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 u+9xGgtZ 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 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: The flush_tlb_all() function is not used a whole lot, but we might as well use broadcast TLB flushing there, too. Signed-off-by: Rik van Riel Tested-by: Manali Shukla --- arch/x86/mm/tlb.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 227e972b6fbc..d225a3df9aa7 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -1074,6 +1074,19 @@ void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start, } +static bool broadcast_flush_tlb_all(void) +{ + if (!IS_ENABLED(CONFIG_X86_BROADCAST_TLB_FLUSH)) + return false; + + if (!cpu_feature_enabled(X86_FEATURE_INVLPGB)) + return false; + + guard(preempt)(); + invlpgb_flush_all(); + return true; +} + static void do_flush_tlb_all(void *info) { count_vm_tlb_event(NR_TLB_REMOTE_FLUSH_RECEIVED); @@ -1082,6 +1095,8 @@ static void do_flush_tlb_all(void *info) void flush_tlb_all(void) { + if (broadcast_flush_tlb_all()) + return; count_vm_tlb_event(NR_TLB_REMOTE_FLUSH); on_each_cpu(do_flush_tlb_all, NULL, 1); }