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[209.85.167.50]) by smtp.gmail.com with ESMTPSA id z14sm5297650lfh.30.2019.10.15.14.48.59 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 15 Oct 2019 14:48:59 -0700 (PDT) Received: by mail-lf1-f50.google.com with SMTP id r2so15648085lfn.8 for ; Tue, 15 Oct 2019 14:48:59 -0700 (PDT) X-Received: by 2002:a19:5504:: with SMTP id n4mr4137650lfe.106.1571176138790; Tue, 15 Oct 2019 14:48:58 -0700 (PDT) MIME-Version: 1.0 References: <20191015191926.9281-1-vgupta@synopsys.com> <20191015191926.9281-2-vgupta@synopsys.com> In-Reply-To: <20191015191926.9281-2-vgupta@synopsys.com> From: Linus Torvalds Date: Tue, 15 Oct 2019 14:48:42 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v2 1/5] ARC: mm: remove __ARCH_USE_5LEVEL_HACK To: Vineet Gupta Cc: Arnd Bergmann , Will Deacon , "Aneesh Kumar K . V" , Andrew Morton , Nick Piggin , Peter Zijlstra , "Kirill A . Shutemov" , Linux-MM , linux-snps-arc@lists.infradead.org, Linux Kernel Mailing List , linux-arch Content-Type: text/plain; charset="UTF-8" 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 Tue, Oct 15, 2019 at 12:19 PM Vineet Gupta wrote: > > This is a non-functional change anyways since ARC has software page walker > with 2 lookup levels (pgd -> pte) Could we encourage other architectures to do the same, and get rid of all uses of __ARCH_USE_5LEVEL_HACK? Linus