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[217.70.178.231]) by mx.google.com with ESMTPS id y15si943528edd.290.2019.03.06.11.11.03 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 06 Mar 2019 11:11:04 -0800 (PST) Received-SPF: neutral (google.com: 217.70.178.231 is neither permitted nor denied by best guess record for domain of alex@ghiti.fr) client-ip=217.70.178.231; Authentication-Results: mx.google.com; spf=neutral (google.com: 217.70.178.231 is neither permitted nor denied by best guess record for domain of alex@ghiti.fr) smtp.mailfrom=alex@ghiti.fr Received: from [192.168.0.11] (127.19.86.79.rev.sfr.net [79.86.19.127]) (Authenticated sender: alex@ghiti.fr) by relay11.mail.gandi.net (Postfix) with ESMTPSA id 7693C100006; Wed, 6 Mar 2019 19:10:55 +0000 (UTC) From: Alex Ghiti To: David Miller Cc: vbabka@suse.cz, catalin.marinas@arm.com, will.deacon@arm.com, benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, ysato@users.sourceforge.jp, dalias@libc.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, x86@kernel.org, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, mike.kravetz@oracle.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v5 2/4] sparc: Advertise gigantic page support References: <20190306190005.7036-1-alex@ghiti.fr> <20190306190005.7036-3-alex@ghiti.fr> <20190306.110436.1714716608828903522.davem@davemloft.net> Message-ID: Date: Wed, 6 Mar 2019 14:10:54 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.3 MIME-Version: 1.0 In-Reply-To: <20190306.110436.1714716608828903522.davem@davemloft.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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 3/6/19 2:04 PM, David Miller wrote: > From: Alexandre Ghiti > Date: Wed, 6 Mar 2019 14:00:03 -0500 > >> sparc actually supports gigantic pages and selecting >> ARCH_HAS_GIGANTIC_PAGE allows it to allocate and free >> gigantic pages at runtime. >> >> sparc allows configuration such as huge pages of 16GB, >> pages of 8KB and MAX_ORDER = 13 (default): >> HPAGE_SHIFT (34) - PAGE_SHIFT (13) = 21 >= MAX_ORDER (13) >> >> Signed-off-by: Alexandre Ghiti > Much better. > > Acked-by: David S. Miller Thanks ! Alex