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[70.31.27.79]) by smtp.gmail.com with ESMTPSA id g12-20020ac8580c000000b0035d4f68232esm10631028qtg.3.2022.10.03.11.24.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Oct 2022 11:24:33 -0700 (PDT) Date: Mon, 3 Oct 2022 14:24:31 -0400 From: Peter Xu To: Rick Edgecombe Cc: x86@kernel.org, "H . Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Borislav Petkov , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H . J . Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V . Shankar" , Weijiang Yang , "Kirill A . Shutemov" , joao.moreira@intel.com, John Allen , kcc@google.com, eranian@google.com, rppt@kernel.org, jamorris@linux.microsoft.com, dethoma@microsoft.com, Yu-cheng Yu Subject: Re: [PATCH v2 13/39] mm: Move VM_UFFD_MINOR_BIT from 37 to 38 Message-ID: References: <20220929222936.14584-1-rick.p.edgecombe@intel.com> <20220929222936.14584-14-rick.p.edgecombe@intel.com> MIME-Version: 1.0 In-Reply-To: <20220929222936.14584-14-rick.p.edgecombe@intel.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1664821477; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=P57fOCRr8L8IWMz1idkV10HcfpUZXl9CrILykX0M7Do=; b=s8pkPsINXarSZ806O7ewkLkqVU7weXjWcjFxipW6fK3rvXs7hkNQV6e/EnyqAJGtr8hxtc 8AGufnXOp5WSuc2hE3wmoPSVZjROsTln5xToT92aU+ibeehOsuoY5WY05UNhdZuYxaemgH KcyhzYJNGHSya2C60Th0ss0hFm8I4GI= ARC-Authentication-Results: i=1; imf07.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=erUfC1Bw; spf=pass (imf07.hostedemail.com: domain of peterx@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=peterx@redhat.com; dmarc=pass (policy=none) header.from=redhat.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1664821477; a=rsa-sha256; cv=none; b=1rVgqhyr4LHMNr7IDik5LPsZ/u8g0eV0DKZN4HtTVsFWBGc9rZ/vca8H254c37sYRGbgOW zaiBzH5NaYWGVTSi3mFHa/rqRQ//ylJ5lHW/cJ4R5i4a/oaLb/j4mTEVmm1jH5y0qgcgdE Gadwdt2Udi4eC7h7aSPOht79q9niszI= X-Rspam-User: Authentication-Results: imf07.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=erUfC1Bw; spf=pass (imf07.hostedemail.com: domain of peterx@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=peterx@redhat.com; dmarc=pass (policy=none) header.from=redhat.com X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: E48B240016 X-Stat-Signature: 7puo3jmmzqwer731r17qqs7zxw77f5az X-HE-Tag: 1664821476-539994 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: On Thu, Sep 29, 2022 at 03:29:10PM -0700, Rick Edgecombe wrote: > From: Yu-cheng Yu > > To introduce VM_SHADOW_STACK as VM_HIGH_ARCH_BIT (37), and make all > VM_HIGH_ARCH_BITs stay together, move VM_UFFD_MINOR_BIT from 37 to 38. > > Signed-off-by: Yu-cheng Yu > Reviewed-by: Axel Rasmussen > Signed-off-by: Rick Edgecombe > Cc: Peter Xu > Cc: Mike Kravetz Acked-by: Peter Xu -- Peter Xu