From patchwork Mon Feb 10 05:56:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zong Li X-Patchwork-Id: 11372493 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 640A71805 for ; Mon, 10 Feb 2020 05:57:11 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 41F8421775 for ; Mon, 10 Feb 2020 05:57:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="jROYAXZU"; dkim=pass (2048-bit key) header.d=sifive.com header.i=@sifive.com header.b="LwEa2cuF" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 41F8421775 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id:Date :Subject:To:From:Reply-To:Content-Type:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=62RfhKAR/Ri4okXqm018bf0oko/VlUMmOmgrha7NFJc=; b=jROYAXZUx63IcA 792E+OfM835LCvy3WmbGkxQiR6m0KphxI1+zzTBToltPNPzo0Rvkc8JBo+3LK7d4eztCrqnBilrbw jJscXVgsgzFGUpST71mo94TZoGj0uzR4az7iFQAiXT0OAXxrppg+AFCcUoz4SBOKM2W+R07Xw+Ga5 a9HyrfDjf8mK8NhNFiLHLMIgOXb+nOIN05u/qTA/eVVyOdkt2ALesiCtwK0mYtgJhZ6J3TvcT3ilr mK3auQf6bdjZ6gmqXECTc1q9CePGjOFX3MS0O0aCV/BjMdqbde/S/CCLBIBRKRc9hrZyrnpgYGeZq UQFi8/nTe0FTepmlY+iQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j124B-0004Ye-KG; Mon, 10 Feb 2020 05:57:07 +0000 Received: from mail-pg1-x541.google.com ([2607:f8b0:4864:20::541]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j1249-0004WO-Kj for linux-riscv@lists.infradead.org; Mon, 10 Feb 2020 05:57:07 +0000 Received: by mail-pg1-x541.google.com with SMTP id b35so3283304pgm.13 for ; Sun, 09 Feb 2020 21:57:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=62RfhKAR/Ri4okXqm018bf0oko/VlUMmOmgrha7NFJc=; b=LwEa2cuFrHdjHrRI7KW8PxSw4vR3QJcIM5pqYuIO50oJxfp5EKeNF+BdQyd0585lok nsbW+QRPGgZNabsMUiPaYmU4q3y1b1J5bkSm/OJiIixpvfjvqmtmQscPDV0/YZzDaVmG uqj5jMlFLzyUtiujvYBmVPoyR4VQ6F0Qr4kNH46UhD0DXS1HqfFSHw7zBH8Gt85wGKjK 62TvZTkx1avqEU51JWAyfEmtJiAGalyXLm5LLpLZ1XPso6DpPt+ajIhHKniKeydBnHxu kN2RGoOCG611kpEKqAuklrfNaPh9IWVxa4nNRo4p+7LhWos4gPCQnwPbWD6NvNRpZJmp Ui+g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=62RfhKAR/Ri4okXqm018bf0oko/VlUMmOmgrha7NFJc=; b=C/UL3lkKCm69VsyBRdPc9qFh/5+jN1o434In2vpbylx1bm++Edlcmugy5NdAyKDa2O 6CdstrMe8l76B8hwZ1gG5CRfXCbfdKCEAY5nEXADX+SXbgJRUNQ6lgkgxQYbb6TzMwU7 6fSLQvL0yLZHK5lHqx7FmzkktdAGy/Uui2VC27O0+3PqzlMqxKhKYy+ALmwjUTEoN7tr z+q7TsSr2t2o/l+OngaRzJrGMkBJjUUY5fqX25vpQUhlVr6zuV6e4LmYvTxOrYp3Sqt3 AXIdeLASSJBqNstdcUczldW8UnTKv8hfnDz1BwLa4xU5DM0CtZhJF60B8Y/y/64B/2Cq 5H1g== X-Gm-Message-State: APjAAAV5HV+8JPTnH04hIer5v/y/q3nh9OObuMypoNiAJ7XyXAqAG5dQ fFxh5YDDKna9mqhMIF7uEtssgA== X-Google-Smtp-Source: APXvYqyLwM9orE9zwSxvz1FkNdJPgYt9aD06AOmG01Ol6nUGVWGBH7dNYvJ4Qrgg/llhsMnyGvt0Pw== X-Received: by 2002:a63:e54c:: with SMTP id z12mr12274548pgj.415.1581314225067; Sun, 09 Feb 2020 21:57:05 -0800 (PST) Received: from hsinchu02.internal.sifive.com (220-132-236-182.HINET-IP.hinet.net. [220.132.236.182]) by smtp.gmail.com with ESMTPSA id s206sm11140234pfs.100.2020.02.09.21.57.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 09 Feb 2020 21:57:04 -0800 (PST) From: Zong Li To: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, joe@perches.com, nickhu@andestech.com Subject: [PATCH v2 1/2] riscv: allocate a complete page size for each page table Date: Mon, 10 Feb 2020 13:56:53 +0800 Message-Id: <20200210055654.96725-2-zong.li@sifive.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200210055654.96725-1-zong.li@sifive.com> References: <20200210055654.96725-1-zong.li@sifive.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200209_215705_694649_6E9B906D X-CRM114-Status: UNSURE ( 9.38 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:541 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Zong Li Sender: "linux-riscv" Errors-To: linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org Each page table should be created by allocating a complete page size for it. Otherwise, the content of the page table would be corrupted somewhere through memory allocation which allocates the memory at the middle of the page table for other use. Signed-off-by: Zong Li --- arch/riscv/mm/kasan_init.c | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c index f0cc86040587..f8eaf7e73a23 100644 --- a/arch/riscv/mm/kasan_init.c +++ b/arch/riscv/mm/kasan_init.c @@ -46,29 +46,34 @@ asmlinkage void __init kasan_early_init(void) static void __init populate(void *start, void *end) { - unsigned long i; + unsigned long i, offset; unsigned long vaddr = (unsigned long)start & PAGE_MASK; unsigned long vend = PAGE_ALIGN((unsigned long)end); unsigned long n_pages = (vend - vaddr) / PAGE_SIZE; + unsigned long n_ptes = + ((n_pages + PTRS_PER_PTE) & -PTRS_PER_PTE) / PTRS_PER_PTE; unsigned long n_pmds = - (n_pages % PTRS_PER_PTE) ? n_pages / PTRS_PER_PTE + 1 : - n_pages / PTRS_PER_PTE; + ((n_ptes + PTRS_PER_PMD) & -PTRS_PER_PMD) / PTRS_PER_PMD; + + pte_t *pte = + memblock_alloc(n_ptes * PTRS_PER_PTE * sizeof(pte_t), PAGE_SIZE); + pmd_t *pmd = + memblock_alloc(n_pmds * PTRS_PER_PMD * sizeof(pmd_t), PAGE_SIZE); pgd_t *pgd = pgd_offset_k(vaddr); - pmd_t *pmd = memblock_alloc(n_pmds * sizeof(pmd_t), PAGE_SIZE); - pte_t *pte = memblock_alloc(n_pages * sizeof(pte_t), PAGE_SIZE); for (i = 0; i < n_pages; i++) { phys_addr_t phys = memblock_phys_alloc(PAGE_SIZE, PAGE_SIZE); - - set_pte(pte + i, pfn_pte(PHYS_PFN(phys), PAGE_KERNEL)); + set_pte(&pte[i], pfn_pte(PHYS_PFN(phys), PAGE_KERNEL)); } - for (i = 0; i < n_pmds; ++pgd, i += PTRS_PER_PMD) - set_pgd(pgd, pfn_pgd(PFN_DOWN(__pa(((uintptr_t)(pmd + i)))), + for (i = 0, offset = 0; i < n_ptes; i++, offset += PTRS_PER_PTE) + set_pmd(&pmd[i], + pfn_pmd(PFN_DOWN(__pa(&pte[offset])), __pgprot(_PAGE_TABLE))); - for (i = 0; i < n_pages; ++pmd, i += PTRS_PER_PTE) - set_pmd(pmd, pfn_pmd(PFN_DOWN(__pa((uintptr_t)(pte + i))), + for (i = 0, offset = 0; i < n_pmds; i++, offset += PTRS_PER_PMD) + set_pgd(&pgd[i], + pfn_pgd(PFN_DOWN(__pa(&pmd[offset])), __pgprot(_PAGE_TABLE))); flush_tlb_all(); From patchwork Mon Feb 10 05:56:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zong Li X-Patchwork-Id: 11372495 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 93E4F14B4 for ; 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[220.132.236.182]) by smtp.gmail.com with ESMTPSA id s206sm11140234pfs.100.2020.02.09.21.57.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 09 Feb 2020 21:57:06 -0800 (PST) From: Zong Li To: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, joe@perches.com, nickhu@andestech.com Subject: [PATCH v2 2/2] riscv: adjust the indent Date: Mon, 10 Feb 2020 13:56:54 +0800 Message-Id: <20200210055654.96725-3-zong.li@sifive.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200210055654.96725-1-zong.li@sifive.com> References: <20200210055654.96725-1-zong.li@sifive.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200209_215707_971226_97A51FD6 X-CRM114-Status: GOOD ( 10.14 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:544 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Zong Li Sender: "linux-riscv" Errors-To: linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org Adjust the indent to match Linux coding style. Changes in v2: - Remove an unnecessary void* type casting. Suggested by Joe Perches. Signed-off-by: Zong Li --- arch/riscv/mm/kasan_init.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c index f8eaf7e73a23..abeb590e81f2 100644 --- a/arch/riscv/mm/kasan_init.c +++ b/arch/riscv/mm/kasan_init.c @@ -19,18 +19,20 @@ asmlinkage void __init kasan_early_init(void) for (i = 0; i < PTRS_PER_PTE; ++i) set_pte(kasan_early_shadow_pte + i, mk_pte(virt_to_page(kasan_early_shadow_page), - PAGE_KERNEL)); + PAGE_KERNEL)); for (i = 0; i < PTRS_PER_PMD; ++i) set_pmd(kasan_early_shadow_pmd + i, - pfn_pmd(PFN_DOWN(__pa((uintptr_t)kasan_early_shadow_pte)), - __pgprot(_PAGE_TABLE))); + pfn_pmd(PFN_DOWN + (__pa((uintptr_t) kasan_early_shadow_pte)), + __pgprot(_PAGE_TABLE))); for (i = KASAN_SHADOW_START; i < KASAN_SHADOW_END; i += PGDIR_SIZE, ++pgd) set_pgd(pgd, - pfn_pgd(PFN_DOWN(__pa(((uintptr_t)kasan_early_shadow_pmd))), - __pgprot(_PAGE_TABLE))); + pfn_pgd(PFN_DOWN + (__pa(((uintptr_t) kasan_early_shadow_pmd))), + __pgprot(_PAGE_TABLE))); /* init for swapper_pg_dir */ pgd = pgd_offset_k(KASAN_SHADOW_START); @@ -38,8 +40,9 @@ asmlinkage void __init kasan_early_init(void) for (i = KASAN_SHADOW_START; i < KASAN_SHADOW_END; i += PGDIR_SIZE, ++pgd) set_pgd(pgd, - pfn_pgd(PFN_DOWN(__pa(((uintptr_t)kasan_early_shadow_pmd))), - __pgprot(_PAGE_TABLE))); + pfn_pgd(PFN_DOWN + (__pa(((uintptr_t) kasan_early_shadow_pmd))), + __pgprot(_PAGE_TABLE))); flush_tlb_all(); } @@ -86,7 +89,7 @@ void __init kasan_init(void) unsigned long i; kasan_populate_early_shadow((void *)KASAN_SHADOW_START, - (void *)kasan_mem_to_shadow((void *)VMALLOC_END)); + kasan_mem_to_shadow((void *)VMALLOC_END)); for_each_memblock(memory, reg) { void *start = (void *)__va(reg->base); @@ -95,14 +98,14 @@ void __init kasan_init(void) if (start >= end) break; - populate(kasan_mem_to_shadow(start), - kasan_mem_to_shadow(end)); + populate(kasan_mem_to_shadow(start), kasan_mem_to_shadow(end)); }; for (i = 0; i < PTRS_PER_PTE; i++) set_pte(&kasan_early_shadow_pte[i], mk_pte(virt_to_page(kasan_early_shadow_page), - __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_ACCESSED))); + __pgprot(_PAGE_PRESENT | _PAGE_READ | + _PAGE_ACCESSED))); memset(kasan_early_shadow_page, 0, PAGE_SIZE); init_task.kasan_depth = 0;