Message ID | 20190307132015.26970-2-alex@ghiti.fr (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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[217.70.183.200]) by mx.google.com with ESMTPS id 41si620879edr.20.2019.03.07.05.21.34 for <linux-mm@kvack.org> (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 07 Mar 2019 05:21:35 -0800 (PST) Received-SPF: neutral (google.com: 217.70.183.200 is neither permitted nor denied by best guess record for domain of alex@ghiti.fr) client-ip=217.70.183.200; Authentication-Results: mx.google.com; spf=neutral (google.com: 217.70.183.200 is neither permitted nor denied by best guess record for domain of alex@ghiti.fr) smtp.mailfrom=alex@ghiti.fr X-Originating-IP: 79.86.19.127 Received: from alex.numericable.fr (127.19.86.79.rev.sfr.net [79.86.19.127]) (Authenticated sender: alex@ghiti.fr) by relay7-d.mail.gandi.net (Postfix) with ESMTPSA id 21C9620005; Thu, 7 Mar 2019 13:21:26 +0000 (UTC) From: Alexandre Ghiti <alex@ghiti.fr> To: Andrew Morton <akpm@linux-foundation.org>, Vlastimil Babka <vbabka@suse.cz>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Heiko Carstens <heiko.carstens@de.ibm.com>, Yoshinori Sato <ysato@users.sourceforge.jp>, Rich Felker <dalias@libc.org>, "David S . Miller" <davem@davemloft.net>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>, "H . Peter Anvin" <hpa@zytor.com>, x86@kernel.org, Dave Hansen <dave.hansen@linux.intel.com>, Andy Lutomirski <luto@kernel.org>, Peter Zijlstra <peterz@infradead.org>, Mike Kravetz <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 Cc: Alexandre Ghiti <alex@ghiti.fr> Subject: [PATCH v6 1/4] sh: Advertise gigantic page support Date: Thu, 7 Mar 2019 08:20:12 -0500 Message-Id: <20190307132015.26970-2-alex@ghiti.fr> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190307132015.26970-1-alex@ghiti.fr> References: <20190307132015.26970-1-alex@ghiti.fr> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: <linux-mm.kvack.org> X-Virus-Scanned: ClamAV using ClamSMTP |
Series |
Fix free/allocation of runtime gigantic pages
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diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index a9c36f95744a..299a17bed67c 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -53,6 +53,7 @@ config SUPERH select HAVE_FUTEX_CMPXCHG if FUTEX select HAVE_NMI select NEED_SG_DMA_LENGTH + select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA help The SuperH is a RISC processor targeted for use in embedded systems
sh actually supports gigantic pages and selecting ARCH_HAS_GIGANTIC_PAGE allows it to allocate and free gigantic pages at runtime. At least sdk7786_defconfig exposes such a configuration with huge pages of 64MB, pages of 4KB and MAX_ORDER = 11: HPAGE_SHIFT (26) - PAGE_SHIFT (12) = 14 >= MAX_ORDER (11) Signed-off-by: Alexandre Ghiti <alex@ghiti.fr> --- arch/sh/Kconfig | 1 + 1 file changed, 1 insertion(+)