From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.alien8.de (mail.alien8.de [65.109.113.108]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 22B7DA35 for ; Sun, 22 Dec 2024 11:48:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.109.113.108 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734868084; cv=none; b=NYX4WEU8lTPn2wmPFwUUzm0WtdB+ZvA7nUqmaplM+IrZ1HYxd85NfAom2B/+kx6oSXaj8saliYwT0S2UHtKpPMd4vvwoHzI/M46wWc3AYbEa3wSxfhkierl8pChZDQXjxqHBgMVlSAcNQxk5v3E3j4iB56NAZCbulFTgkZz+yyg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734868084; c=relaxed/simple; bh=kNaqMprgXJnj9iaa91DMJ76JokC9e2XdQqgZVdTVJQQ=; h=Date:From:To:CC:Subject:In-Reply-To:References:Message-ID: MIME-Version:Content-Type; b=qzwpESVlFfVJTtFegUlKBGR7fk/FpHUnzuRfwM9UJiTxLc81Cpm4Nd0tmHBkdMPk73/kqvfUJWq0btEroqMslCmnhO3KjTc5rQoRwl4Xy3/fFaeqD7fPj1q0+0pn7z0g17HQ1W4SF0XESh9K1frAqZbfdzVMcVsaRcG5J+jsrVI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=alien8.de; spf=pass smtp.mailfrom=alien8.de; dkim=pass (4096-bit key) header.d=alien8.de header.i=@alien8.de header.b=BCivnzSB; arc=none smtp.client-ip=65.109.113.108 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=alien8.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=alien8.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (4096-bit key) header.d=alien8.de header.i=@alien8.de header.b="BCivnzSB" Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTP id 8B6F240E0163; Sun, 22 Dec 2024 11:47:59 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at mail.alien8.de Authentication-Results: mail.alien8.de (amavisd-new); dkim=pass (4096-bit key) header.d=alien8.de Received: from mail.alien8.de ([127.0.0.1]) by localhost (mail.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id cmvF0s6yyKuN; Sun, 22 Dec 2024 11:47:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=alien8; t=1734868076; bh=KZiD2HkNNvt7R8pB5MWBZnMk+HDZK/bVEfgJxJuWMsw=; h=Date:From:To:CC:Subject:In-Reply-To:References:From; b=BCivnzSBGC1tFWDckWmFN1CILATCcbSdNUabjKpsURhN6iDW9gNtb3ImFxAYfNtrO /bVv6l1WomLNqZTge6cGYMi9S5QhKB7mcsA1TLirptI/Y4HdI5HLsHe7TDouKcwwkO LybZ2l88QDAqtIB92t7yfemgtwTbFExtSjcEN6SxTa/ikNYs3lxVXig5S6vVSaQep1 UIzwGYbUxyy771BgnO+k2Cyt3zrn5ruZcn79NnhZgc+m8clXIxfEqU8LBhpdr+vFAX gygPR06Hyo3o3eVNgA1MMm8QRei2q3YxHmModI+o4Hmss/YoVZFsCle5tys5ETXORv O7sfAvSMg5Tl/OpfMW+v1bPP4yXzn4W9lF7xtnlOrLM2+ZPweKv+nMrvZ2lBPC4I9A RhJJjMe2TWy8WQiBZ/4nsRgJWTGMauolZwm3YEj5a/1Y7eZ+3UVjiSjxNtboH7sZ9F LQaYKxoxRGuSOnrVW1RLBgiPO/d1DrhwrOjC2IsNikKw05Ux7Ktq5KTFAG9E5wdUXH 9C/sgvptW3w3PgfeXyt/tSHdqSx9JGQv1y+4hOUD8irxjShbavPh606Ri2uuPV3QGI 68tLNL6L3h619/LBwOBbs5PMgoeVpTgiS4vl9BidwqW2nn7QrFb/t/Qsa2Sgb04Iti O+lt9Fr8NDxilZewkVTvDHOk= Received: from [127.0.0.1] (dynamic-176-003-036-115.176.3.pool.telefonica.de [176.3.36.115]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 8ADB540E01C5; Sun, 22 Dec 2024 11:47:44 +0000 (UTC) Date: Sun, 22 Dec 2024 12:47:40 +0100 From: Borislav Petkov To: Rik van Riel , x86@kernel.org CC: 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 Subject: Re: [PATCH 04/10] x86,mm: use INVLPGB for kernel TLB flushes User-Agent: K-9 Mail for Android In-Reply-To: <20241222040717.3096835-5-riel@surriel.com> References: <20241222040717.3096835-1-riel@surriel.com> <20241222040717.3096835-5-riel@surriel.com> Message-ID: <2A5A3BED-ACE5-4F24-B6B3-9BA4E12AE4A7@alien8.de> 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-Transfer-Encoding: quoted-printable On December 22, 2024 5:06:36 AM GMT+01:00, Rik van Riel wrote: >@@ -1089,6 +1116,11 @@ static void do_kernel_range_flush(void *info) >=20 > void flush_tlb_kernel_range(unsigned long start, unsigned long end) > { >+ if (static_cpu_has(X86_FEATURE_INVLPGB)) { cpu_feature_enabled=20 --=20 Sent from a small device: formatting sucks and brevity is inevitable=2E