From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9548CC636CC for ; Thu, 9 Feb 2023 03:14:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Subject:From:Cc:To:MIME-Version:Date:Message-ID: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=54OLkLgf9a1Dku92rPyHiP51EirGNLl7MxSNX3AWoIg=; b=mAUO+SrICQZmuBh5ITp3FOfO+w BbY89zwgR6y0VawLxJ0puqjkac+WE/gHur0D7qTCMNt7ZHMkYI1AoXLYkI/gwL3DZDYEm5IY4buTe p20jPuu/iUwXGg92PrWn9I39adz2LmigjAWJLXf1xN8gLVwPee4T4lddKpEd1tIpwFA0cudnCpUu3 gVdUnCIOr39pQhMYctxmZMI5Hbn2PwKq6S/HOQE5ZWVCR7wYuQrSjn7s1Khu6zgxtWnmWYzoGD1YG JZ4wqkpEzkIoBZQlvWaAlr1sLHG5VF6UWn7hZ5zd+rjtAVfoHE33WhOlxTc6IpEwFo9lzGBFSFdHG gR1jhscQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pPxNc-0000Lk-KY; Thu, 09 Feb 2023 03:13:48 +0000 Received: from smtp80.cstnet.cn ([159.226.251.80] helo=cstnet.cn) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pPxNY-0000Kh-1M for linux-riscv@lists.infradead.org; Thu, 09 Feb 2023 03:13:47 +0000 Received: from [198.18.0.1] (unknown [124.16.141.244]) by APP-01 (Coremail) with SMTP id qwCowAA3Mz_bZORjqfYrBA--.61599S2; Thu, 09 Feb 2023 11:13:33 +0800 (CST) Message-ID: <11ea7918-00db-3f30-2504-53692936aaae@iscas.ac.cn> Date: Thu, 9 Feb 2023 11:13:31 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.7.1 To: palmer@dabbelt.com, linux-riscv@lists.infradead.org Cc: jeff@riscv.org, xuyinan@ict.ac.cn, conor@kernel.org, ajones@ventanamicro.com From: Qinglin Pan Subject: [PATCH v12 0/3] riscv, mm: detect svnapot cpu support at runtime X-CM-TRANSID: qwCowAA3Mz_bZORjqfYrBA--.61599S2 X-Coremail-Antispam: 1UD129KBjvJXoWxJFyfAw47Gr4fCr17Gw4fGrg_yoW5XF4kpF W5Grn3GF98Ar93GFsxZrnF9r1rJw1rKFWaqw1fJ34UAws0y3yjvws0kF90k3WkJFZ3Xr10 kF45ZFyj9a4DZ37anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUU9K14x267AKxVWUJVW8JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26r4j6ryUM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4U JVWxJr1l84ACjcxK6I8E87Iv67AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVCY1x0267AKxV WxJr0_GcWlnxkEFVAIw20F6cxK64vIFxWle2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG 64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_JrI_JrylYx0Ex4A2jsIE14v26F 4j6r4UJwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IY64vIr41lF7I21c0EjII2zVCS5cI2 0VAGYxC7Mxk0xIA0c2IEe2xFo4CEbIxvr21lc2xSY4AK67AK6r48MxAIw28IcxkI7VAKI4 8JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xv wVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6xIIjx v20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAIw20E Y4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267 AKxVWUJVW8JbIYCTnIWIevJa73UjIFyTuYvjfU5KsjDUUUU X-Originating-IP: [124.16.141.244] X-CM-SenderInfo: 5sdq1xpqjox0asqsiq5lvft2wodfhubq/1tbiCgsRDGPkWj0g9AAAso X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230208_191344_497417_ADFF1A8E X-CRM114-Status: GOOD ( 11.03 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Svnapot is a RISC-V extension for marking contiguous 4K pages as a non-4K page. This patch set is for using Svnapot in hugetlb fs and huge vmap. This patchset adds a Kconfig item for using Svnapot in "Platform type"->"SVNAPOT extension support". Its default value is on, and people can set it off if they don't allow kernel to detect Svnapot hardware support and leverage it. Tested on: - qemu rv64 with "Svnapot support" off and svnapot=true. - qemu rv64 with "Svnapot support" on and svnapot=true. - qemu rv64 with "Svnapot support" off and svnapot=false. - qemu rv64 with "Svnapot support" on and svnapot=false. Changes in v2: - detect Svnapot hardware support at boot time. Changes in v3: - do linear mapping again if has_svnapot Changes in v4: - fix some errors/warns reported by checkpatch.pl, thanks @Conor Changes in v5: - modify code according to @Conor and @Heiko Changes in v6: - use static key insead of alternative errata Changes in v7: - add napot_cont_order for possible more napot order in the future - remove linear mapping related code from this patchset to another patch - refactor hugetlb code for svnapot according to thanks @Andrew @Conor - use tools/testing/selftests/vm/map_hugetlb as hugetlb testing program - support svnapot in huge vmap on newer for-next branch Changes in v8: - fix compilation errors in rv32_defconfig - insert some lines of whitespace according to @Conor's suggestion Changes in v9: - use alternative to avoid using static branches inside heavily used inline functions - change napot_cont_mask definition - post test_vmalloc modification about testing vmalloc_huge Changes in v10: - fix some nits caught by @Andrew - collect Reviewed-by/Acked-by - add memory leak warning in KConfig text - replace test_vmalloc patch link with the standard one Changes in v11: - add more detailed warning about HUGETLBFS and SVNAPOT in KConfig text - fix missing reverse-xmas tree Changes in v12: - rebase on the new ISA extension API [1] [1]https://lore.kernel.org/all/20230128172856.3814-5-jszhang@kernel.org/ Qinglin Pan (3): riscv: mm: modify pte format for Svnapot riscv: mm: support Svnapot in hugetlb page riscv: mm: support Svnapot in huge vmap arch/riscv/Kconfig | 21 +- arch/riscv/include/asm/hugetlb.h | 34 +++- arch/riscv/include/asm/hwcap.h | 9 +- arch/riscv/include/asm/page.h | 5 - arch/riscv/include/asm/pgtable-64.h | 34 ++++ arch/riscv/include/asm/pgtable.h | 39 +++- arch/riscv/include/asm/vmalloc.h | 61 +++++- arch/riscv/kernel/cpu.c | 1 + arch/riscv/kernel/cpufeature.c | 1 + arch/riscv/mm/hugetlbpage.c | 301 ++++++++++++++++++++++++++++ 10 files changed, 493 insertions(+), 13 deletions(-) -- 2.39.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv