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Shutemov" Cc: Dave Hansen , Andy Lutomirski , Peter Zijlstra , "the arch/x86 maintainers" , Kostya Serebryany , Andrey Ryabinin , Andrey Konovalov , Taras Madan , Dmitry Vyukov , "H . J . Lu" , Andi Kleen , Rick Edgecombe , Linux Memory Management List , LKML Content-Type: text/plain; charset="UTF-8" ARC-Authentication-Results: i=1; imf14.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=Sx7jP9r3; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf14.hostedemail.com: domain of glider@google.com designates 209.85.219.176 as permitted sender) smtp.mailfrom=glider@google.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1658408978; a=rsa-sha256; cv=none; b=q+DwASv5SvK6vtohbSpsQge9BBmAr06fEC4ke5XEvTkYScbDTTyXk3hPq4pCLvchFV/SUo DvCIQWx5pf5zBy9qN8uPCRgYWNhL1q2BFwMImujoXvTB7W84b0AVxsGjk1yzLEcPoSod03 VZnP7ohpj1EuXIzU5zxcekcwP+IViLc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1658408978; 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=helfzrGgYuErFKUHoxu4xJhqLDpOC/RmZFHNZgYAfKo=; b=Di/AEMvWTTfx2JL0bAFbWOlZsN2LkzG30j5wyrpzlRdFiVX5UJQ4fMJh+GHsRqDDTr1pFe PqcgC+WQ//6wxLlLIx8SMIEbxFvzgiQz1QIOfLS0mGRx694GSvemGgXzEqvKM/FtFUYxBe IiGQDWOWvBxlTKJ5NcrR2gC5SglAGxQ= X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 578C410007E Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=Sx7jP9r3; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf14.hostedemail.com: domain of glider@google.com designates 209.85.219.176 as permitted sender) smtp.mailfrom=glider@google.com X-Stat-Signature: umexr4f18nptjq13n39b1hsydyqjprau X-HE-Tag: 1658408977-239799 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 Wed, Jul 20, 2022 at 2:59 AM Kirill A. Shutemov wrote: > > On Mon, Jul 18, 2022 at 07:39:22PM +0200, Alexander Potapenko wrote: > > On Wed, Jul 13, 2022 at 1:13 AM Kirill A. Shutemov > > wrote: > > > > > > Linear Address Masking[1] (LAM) modifies the checking that is applied to > > > 64-bit linear addresses, allowing software to use of the untranslated > > > address bits for metadata. > > > > > > The patchset brings support for LAM for userspace addresses. For what it's worth, there's an LLVM bot running basic HWASan tests on QEMU with the latest LAM patches here: https://lab.llvm.org/buildbot/#/builders/169 So far the bot is happy, giving us some sense of LAM_U57 support being sane. I'll add some tags to individual patches.