From patchwork Sun Dec 4 14:11:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qinglin Pan X-Patchwork-Id: 13063870 X-Patchwork-Delegate: palmer@dabbelt.com 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 9A8D1C4321E for ; Sun, 4 Dec 2022 14:12:35 +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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7bgRb0qr9SDiUxdF6NalRnlZXpKpuypAgyxeAeWkxWc=; b=VIo+4G0B5jRNW4 +uoJYh42HjyIEorbGbMPvLJXvQq2uDQwgvUfaOnhyEkKu5vnXC5ctQkAyYdaxrw8N18v3fkxz4YUI D83hGsIibUjMxZpT75qB07bzKbJ+4IsFjTOIma81lDONr+V0TV8/zO+Akn0dcv6wbpVKsv0cSeY/W 4Znd4i1q1YPWpaCyJcyP/ISV2rg+glAJ6rVzMjYEbkCV/A7cYxxjZCtQ+2xDp7tWjsrlxSlFlnk+Z g09pnLM0fAb9ilArJoXH+Qwmb8yJWkUoKFRh8zqMpqiDDN5UirlXy9oZF6BbPMfIqHtyLMj1M0Vak DWmTxjB4o3zKUNA9qFEg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p1piy-008gGE-Rc; Sun, 04 Dec 2022 14:12:08 +0000 Received: from smtp84.cstnet.cn ([159.226.251.84] helo=cstnet.cn) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p1piq-008gD4-9s for linux-riscv@lists.infradead.org; Sun, 04 Dec 2022 14:12:04 +0000 Received: from localhost.localdomain (unknown [124.16.141.248]) by APP-05 (Coremail) with SMTP id zQCowAC3v_elqoxjJM+sBA--.64691S5; Sun, 04 Dec 2022 22:11:56 +0800 (CST) From: panqinglin2020@iscas.ac.cn To: palmer@dabbelt.com, linux-riscv@lists.infradead.org Cc: jeff@riscv.org, xuyinan@ict.ac.cn, conor@kernel.org, ajones@ventanamicro.com, alex@ghiti.fr, jszhang@kernel.org, Qinglin Pan Subject: [PATCH v9 3/3] riscv: mm: support Svnapot in huge vmap Date: Sun, 4 Dec 2022 22:11:37 +0800 Message-Id: <20221204141137.691790-4-panqinglin2020@iscas.ac.cn> X-Mailer: git-send-email 2.37.4 In-Reply-To: <20221204141137.691790-1-panqinglin2020@iscas.ac.cn> References: <20221204141137.691790-1-panqinglin2020@iscas.ac.cn> MIME-Version: 1.0 X-CM-TRANSID: zQCowAC3v_elqoxjJM+sBA--.64691S5 X-Coremail-Antispam: 1UD129KBjvJXoW7ZF1DZryrWw17KF1xXw4fKrg_yoW8Kw4fpF 4UCr1kG3yFqryS9rWjyr1Fgan8Xr15uayUJayfJr95AwsrJF13uryrAas0vryUXrZ5JFy3 ArZ0qrWfu3s8AFJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPl14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JrWl82xGYIkIc2 x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_Gr0_Xr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1l84 ACjcxK6I8E87Iv67AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVCY1x0267AKxVW8Jr0_Cr1U M2vYz4IE04k24VAvwVAKI4IrM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64 kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm 72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYx C7M4kE6xkIj40Ew7xC0wCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC2 0s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI 0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv2 0xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2js IE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZF pf9x0JU9Z23UUUUU= X-Originating-IP: [124.16.141.248] X-CM-SenderInfo: 5sdq1xpqjox0asqsiq5lvft2wodfhubq/1tbiBwIKDGOMqccBOwAAs4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221204_061200_750754_DFDDC8AC X-CRM114-Status: UNSURE ( 7.06 ) X-CRM114-Notice: Please train this message. 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: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Qinglin Pan As HAVE_ARCH_HUGE_VMAP and HAVE_ARCH_HUGE_VMALLOC is supported, we can implement arch_vmap_pte_range_map_size and arch_vmap_pte_supported_shift for Svnapot to support huge vmap about napot size. It can be tested by huge vmap used in pci driver. Huge vmalloc with svnapot can be tested by changing test_vmalloc module like [1], and probe this module to run fix_size_alloc_test with use_huge true. [1]https://github.com/RV-VM/linux-vm-support/commit/33f4ee399c36d355c412ebe5334ca46fd727f8f5 Signed-off-by: Qinglin Pan Reviewed-by: Andrew Jones Acked-by: Conor Dooley diff --git a/arch/riscv/include/asm/vmalloc.h b/arch/riscv/include/asm/vmalloc.h index 48da5371f1e9..6f7447d563ab 100644 --- a/arch/riscv/include/asm/vmalloc.h +++ b/arch/riscv/include/asm/vmalloc.h @@ -17,6 +17,65 @@ static inline bool arch_vmap_pmd_supported(pgprot_t prot) return true; } -#endif +#ifdef CONFIG_RISCV_ISA_SVNAPOT +#include +#define arch_vmap_pte_range_map_size arch_vmap_pte_range_map_size +static inline unsigned long arch_vmap_pte_range_map_size(unsigned long addr, unsigned long end, + u64 pfn, unsigned int max_page_shift) +{ + unsigned long size, order; + unsigned long map_size = PAGE_SIZE; + + if (!has_svnapot()) + return map_size; + + for_each_napot_order_rev(order) { + if (napot_cont_shift(order) > max_page_shift) + continue; + + size = napot_cont_size(order); + if (end - addr < size) + continue; + + if (!IS_ALIGNED(addr, size)) + continue; + + if (!IS_ALIGNED(PFN_PHYS(pfn), size)) + continue; + + map_size = size; + break; + } + + return map_size; +} + +#define arch_vmap_pte_supported_shift arch_vmap_pte_supported_shift +static inline int arch_vmap_pte_supported_shift(unsigned long size) +{ + int shift = PAGE_SHIFT; + unsigned long order; + + if (!has_svnapot()) + return shift; + + WARN_ON_ONCE(size >= PMD_SIZE); + + for_each_napot_order_rev(order) { + if (napot_cont_size(order) > size) + continue; + + if (!IS_ALIGNED(size, napot_cont_size(order))) + continue; + + shift = napot_cont_shift(order); + break; + } + + return shift; +} + +#endif /* CONFIG_RISCV_ISA_SVNAPOT */ +#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */ #endif /* _ASM_RISCV_VMALLOC_H */