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[2a01:7a0:2:106d:700::1]) by mx.google.com with ESMTPS id o6si2489672wre.118.2019.06.14.05.22.55 for (version=TLS1_2 cipher=AES128-SHA bits=128/128); Fri, 14 Jun 2019 05:22:55 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of tglx@linutronix.de designates 2a01:7a0:2:106d:700::1 as permitted sender) client-ip=2a01:7a0:2:106d:700::1; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of tglx@linutronix.de designates 2a01:7a0:2:106d:700::1 as permitted sender) smtp.mailfrom=tglx@linutronix.de Received: from [5.158.153.52] (helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1hblEL-0002pf-BB; Fri, 14 Jun 2019 14:22:53 +0200 Date: Fri, 14 Jun 2019 14:22:52 +0200 (CEST) From: Thomas Gleixner To: Anshuman Khandual cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, Catalin Marinas , Will Deacon , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Ingo Molnar , "Kirill A . Shutemov" , Michal Hocko , linux-arm-kernel@lists.infradead.org, x86@kernel.org Subject: Re: [PATCH] mm/ioremap: Probe platform for p4d huge map support In-Reply-To: <1560406781-14253-1-git-send-email-anshuman.khandual@arm.com> Message-ID: References: <1560406781-14253-1-git-send-email-anshuman.khandual@arm.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII 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, 13 Jun 2019, Anshuman Khandual wrote: > Finishing up what the commit c2febafc67734a ("mm: convert generic code to > 5-level paging") started out while levelling up P4D huge mapping support > at par with PUD and PMD. A new arch call back arch_ioremap_p4d_supported() > is being added which just maintains status quo (P4D huge map not supported) > on x86 and arm64. > > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Dave Hansen > Cc: Andy Lutomirski > Cc: Peter Zijlstra > Cc: Thomas Gleixner > Cc: Ingo Molnar > Cc: Kirill A. Shutemov > Cc: Andrew Morton > Cc: Michal Hocko > Cc: linux-arm-kernel@lists.infradead.org > Cc: x86@kernel.org > > Signed-off-by: Anshuman Khandual Acked-by: Thomas Gleixner