From patchwork Thu Mar 7 13:20:13 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre Ghiti X-Patchwork-Id: 10842901 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6BDB614DE for ; Thu, 7 Mar 2019 13:22:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 58B2E2E8C7 for ; Thu, 7 Mar 2019 13:22:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 560F62EC4A; Thu, 7 Mar 2019 13:22:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id F28522E8C7 for ; Thu, 7 Mar 2019 13:22:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=KKSXwZ1BsUcvycrzzCnR9Ia0+6S/4zOQcVAPcJ6R2a8=; b=VJ6Iw3DJaEf9iV N3SYXiyk+IBb2H7np4oE+OHPDUIkWCoWFznZOf846xRy96iLn7R1+wTySAezKfHQcCxvlutnHoQsv w9DsnUsjDf5vxOVVl0M1ZbRwese2ND/zNwG8oiQTiFDT4l0Q9TzGGC5n0Uo4jhb8wlGj8aaPgHpXl EXlLVOHi2gt2qrD4qojmNTrWVy0AgNGafdRikTAfCiaaUHUdGqzxfCmcLTWwUlgXAP5aZEOTcEYaQ 0B3Ez/M46mlJqyCHisdOXs4BEKYTVbhzEB7ukcGwmg+I+HTNJrSA+IGgARYsaMj01FURkMsAI1ElV 9DFG3WFt/1fmU33/p5Qw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h1sz1-0004t0-Hx; Thu, 07 Mar 2019 13:22:47 +0000 Received: from relay7-d.mail.gandi.net ([217.70.183.200]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h1syy-0004sF-3g for linux-arm-kernel@lists.infradead.org; Thu, 07 Mar 2019 13:22:45 +0000 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 B50F220005; Thu, 7 Mar 2019 13:22:35 +0000 (UTC) From: Alexandre Ghiti To: Andrew Morton , Vlastimil Babka , Catalin Marinas , Will Deacon , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Martin Schwidefsky , Heiko Carstens , Yoshinori Sato , Rich Felker , "David S . Miller" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H . Peter Anvin" , x86@kernel.org, Dave Hansen , Andy Lutomirski , Peter Zijlstra , Mike Kravetz , 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: [PATCH v6 2/4] sparc: Advertise gigantic page support Date: Thu, 7 Mar 2019 08:20:13 -0500 Message-Id: <20190307132015.26970-3-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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190307_052244_295957_013C0430 X-CRM114-Status: UNSURE ( 9.18 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexandre Ghiti Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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 Acked-by: David S. Miller --- arch/sparc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index d5dd652fb8cc..0b7f0e0fefa5 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -90,6 +90,7 @@ config SPARC64 select ARCH_CLOCKSOURCE_DATA select ARCH_HAS_PTE_SPECIAL select PCI_DOMAINS if PCI + select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA config ARCH_DEFCONFIG string