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[209.85.220.65]) by mx.google.com with SMTPS id bq17sor22167287ejb.55.2019.07.31.08.08.25 for (Google Transport Security); Wed, 31 Jul 2019 08:08:25 -0700 (PDT) Received-SPF: neutral (google.com: 209.85.220.65 is neither permitted nor denied by best guess record for domain of kirill@shutemov.name) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@shutemov-name.20150623.gappssmtp.com header.s=20150623 header.b=kM1i0F40; spf=neutral (google.com: 209.85.220.65 is neither permitted nor denied by best guess record for domain of kirill@shutemov.name) smtp.mailfrom=kirill@shutemov.name DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=shutemov-name.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=D3iLJ7KF8Vm9odDmu+BTFZ/KOQRQtwHyPsHUVXUW2iI=; b=kM1i0F40FYXfEMcdQiR9VUZLV2aBUr0DIlco9iB3hlWgYlqGoH3YhFqThyiuG3GlhU MICJOrT8oqR+53hRqgv3cF8csRqL1xVpyX6tD/ZJaUBHXHN9slodEDUAQFc2ndeYmsWR WW3A0qapPQ7CP1xULEMwz3e4zS5z/Rmun6q/0nEmdJiaXIJHY6yN81AnytapRernvBrE raTbz2gJS/FTTNoeLLnIs+MXpv+7iucyiiIu1zFPo09iRbaEfSGAfhH+M11KFAhMEC6e NwTMUxuK0IGQ7DtfynJRVOV/piQIKxKjIlGe+MhgETY+7kSa+fXty72q0sWznKXB/EmX L2Jw== X-Google-Smtp-Source: APXvYqzHXFkffBxAenDjJHEoVzdmjQiN5+u8mCxxAUf8k5rkMpqzlIwg7G5dir5Kcyl0q83T3wGkPw== X-Received: by 2002:a17:906:1496:: with SMTP id x22mr96005472ejc.191.1564585705643; Wed, 31 Jul 2019 08:08:25 -0700 (PDT) Received: from box.localdomain ([86.57.175.117]) by smtp.gmail.com with ESMTPSA id u7sm12521820ejm.48.2019.07.31.08.08.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 31 Jul 2019 08:08:22 -0700 (PDT) From: "Kirill A. Shutemov" X-Google-Original-From: "Kirill A. Shutemov" Received: by box.localdomain (Postfix, from userid 1000) id 3A8CF101322; Wed, 31 Jul 2019 18:08:16 +0300 (+03) To: Andrew Morton , x86@kernel.org, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Borislav Petkov , Peter Zijlstra , Andy Lutomirski , David Howells Cc: Kees Cook , Dave Hansen , Kai Huang , Jacob Pan , Alison Schofield , linux-mm@kvack.org, kvm@vger.kernel.org, keyrings@vger.kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv2 11/59] x86/mm: Detect MKTME early Date: Wed, 31 Jul 2019 18:07:25 +0300 Message-Id: <20190731150813.26289-12-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190731150813.26289-1-kirill.shutemov@linux.intel.com> References: <20190731150813.26289-1-kirill.shutemov@linux.intel.com> MIME-Version: 1.0 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: X-Virus-Scanned: ClamAV using ClamSMTP We need to know the number of KeyIDs before page_ext is initialized. We are going to use page_ext to store KeyID and it would be handly to avoid page_ext allocation if there's no MKMTE in the system. page_ext initialization happens before full CPU initizliation is complete. Move detect_tme() call to early_init_intel(). Signed-off-by: Kirill A. Shutemov --- arch/x86/kernel/cpu/intel.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index 991bdcb2a55a..4c2d70287eb4 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -187,6 +187,8 @@ static bool bad_spectre_microcode(struct cpuinfo_x86 *c) return false; } +static void detect_tme(struct cpuinfo_x86 *c); + static void early_init_intel(struct cpuinfo_x86 *c) { u64 misc_enable; @@ -338,6 +340,9 @@ static void early_init_intel(struct cpuinfo_x86 *c) */ if (detect_extended_topology_early(c) < 0) detect_ht_early(c); + + if (cpu_has(c, X86_FEATURE_TME)) + detect_tme(c); } #ifdef CONFIG_X86_32 @@ -793,9 +798,6 @@ static void init_intel(struct cpuinfo_x86 *c) if (cpu_has(c, X86_FEATURE_VMX)) detect_vmx_virtcap(c); - if (cpu_has(c, X86_FEATURE_TME)) - detect_tme(c); - init_intel_misc_features(c); }