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b=1pIzwpjpWvV9qEQeBCZUfP0i4Izelng3Uzv7zwjKNlBlvLUcghx+xbinjOjvVivPqmq0XR 6wznKZXNQyYraklF45gIwLiK2DtWUMghm8ZnIjpWoVsUrJlsiXvzv1jtf3zwMcgOQThA45 k/LPwwqgjW47+1QgSP3d5e4wAh/VCR0= ARC-Authentication-Results: i=1; imf25.hostedemail.com; dkim=none; spf=pass (imf25.hostedemail.com: domain of riel@shelob.surriel.com designates 96.67.55.147 as permitted sender) smtp.mailfrom=riel@shelob.surriel.com; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1738719718; a=rsa-sha256; cv=none; b=RS6fc0URtbNgqdi30PWWkhJg7KGNPrgTQ7kDqNh2j26BGJUaO15ChIr65/D4zS0Cq/kd02 p6lHmz0/qCnlQ2w66+2Ing4kY+r35649RxDMVc8C+dRJ3bWLNjpEYbODYxEOdxTxNSZ/jl tS4sss2TfqkaPdAxp6lglmPLUvbxqHQ= 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 1tfUP4-000000004Cs-2zwB; Tue, 04 Feb 2025 20:40:34 -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 v8 07/12] x86/mm: use INVLPGB in flush_tlb_all Date: Tue, 4 Feb 2025 20:39:56 -0500 Message-ID: <20250205014033.3626204-8-riel@surriel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250205014033.3626204-1-riel@surriel.com> References: <20250205014033.3626204-1-riel@surriel.com> MIME-Version: 1.0 X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 13231A000F X-Stat-Signature: q3nun8rmynjandh5s76sfqe6e9jmn7iw X-HE-Tag: 1738719717-244411 X-HE-Meta: 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 VHt+0lgP oQF3Dai5+S1GK5KJsn7J2vXfhD0TNoTSLq93YBtGPfCD3qN9ds/p41nW4SXv8ImT5zBll9mYa4kFuCT04SM9m1esClKjcfEodjy+AMZWh8hDFo8BbdEeSqS4Az+qPRD5qft86dU5AXRyLZoDFPwlX39g1ww/S8ZVWvbi5FLfnssSfOyLRowyygUXgfJ2boQlyKF4npKcMJmJZr6s+Q5cUotdq3qgJ4mlmMw5DEkHSzn8STzTznRG3lTdnyPS6impquE0wkPmbx5CwU0nLeZECPSGm0J7Vvu5zm/QyfkpdB6fjJDFaloaO3YCIL6nL+vOm0kjJRnct0o2M9FmcGeqSYeeSmOR54KBOYduFRf+LnKax3qqlanQDDF402WRgYzcKTg4FOoDUFgLy8wsihTsbpX21T1sIadH5n38WaCcTMFhAluTSn0AH1GC3gqc20kJqneJguyZi9q3mVyDZECImV2Um7L0x6of6B3O7bPHKdCNbSLNA9lImottDLgnBOpPvTPdx6Hl1pQvB6WFUdn651SFcJehVdkb/CO5nsV8Gc1c+m8hhDVNtD3BqeAdSyAfrC4jx 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 7945624afc98..43e1abd4bcb0 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -1070,6 +1070,19 @@ 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); @@ -1078,6 +1091,8 @@ 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); }