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Fri, 24 Apr 2020 00:49:03 -0400 X-MC-Unique: 3TwUM8z4Pue688Km7TtidA-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E7BA6835B4A; Fri, 24 Apr 2020 04:49:01 +0000 (UTC) Received: from localhost.localdomain.com (vpn2-54-127.bne.redhat.com [10.64.54.127]) by smtp.corp.redhat.com (Postfix) with ESMTP id 97D3F5C1C8; Fri, 24 Apr 2020 04:48:59 +0000 (UTC) From: Gavin Shan To: linux-arm-kernel@lists.infradead.org Subject: [PATCH] arm64/mm: Use phys_to_page() to access pgtable memory Date: Fri, 24 Apr 2020 14:48:54 +1000 Message-Id: <20200424044854.15760-1-gshan@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200423_214910_082681_044F5B21 X-CRM114-Status: GOOD ( 10.19 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 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 [207.211.31.81 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_VALID Message has at least one valid DKIM or DK signature 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 -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [207.211.31.81 listed in wl.mailspike.net] -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, catalin.marinas@arm.com, will@kernel.org, linux-kernel@vger.kernel.org, shan.gavin@gmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The macros {pgd, pud, pmd}_page() retrieves the page struct of the corresponding page frame, which is reserved as page table. There is already a macro (phys_to_page), defined in memory.h, to convert the physical address to the page struct. So it's reasonable to use that in pgtable.h. Signed-off-by: Gavin Shan Reviewed-by: Mark Rutland --- arch/arm64/include/asm/pgtable.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 538c85e62f86..8c20e2bd6287 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -508,7 +508,7 @@ static inline void pte_unmap(pte_t *pte) { } #define pte_set_fixmap_offset(pmd, addr) pte_set_fixmap(pte_offset_phys(pmd, addr)) #define pte_clear_fixmap() clear_fixmap(FIX_PTE) -#define pmd_page(pmd) pfn_to_page(__phys_to_pfn(__pmd_to_phys(pmd))) +#define pmd_page(pmd) phys_to_page(__pmd_to_phys(pmd)) /* use ONLY for statically allocated translation tables */ #define pte_offset_kimg(dir,addr) ((pte_t *)__phys_to_kimg(pte_offset_phys((dir), (addr)))) @@ -566,7 +566,7 @@ static inline phys_addr_t pud_page_paddr(pud_t pud) #define pmd_set_fixmap_offset(pud, addr) pmd_set_fixmap(pmd_offset_phys(pud, addr)) #define pmd_clear_fixmap() clear_fixmap(FIX_PMD) -#define pud_page(pud) pfn_to_page(__phys_to_pfn(__pud_to_phys(pud))) +#define pud_page(pud) phys_to_page(__pud_to_phys(pud)) /* use ONLY for statically allocated translation tables */ #define pmd_offset_kimg(dir,addr) ((pmd_t *)__phys_to_kimg(pmd_offset_phys((dir), (addr)))) @@ -624,7 +624,7 @@ static inline phys_addr_t pgd_page_paddr(pgd_t pgd) #define pud_set_fixmap_offset(pgd, addr) pud_set_fixmap(pud_offset_phys(pgd, addr)) #define pud_clear_fixmap() clear_fixmap(FIX_PUD) -#define pgd_page(pgd) pfn_to_page(__phys_to_pfn(__pgd_to_phys(pgd))) +#define pgd_page(pgd) phys_to_page(__pgd_to_phys(pgd)) /* use ONLY for statically allocated translation tables */ #define pud_offset_kimg(dir,addr) ((pud_t *)__phys_to_kimg(pud_offset_phys((dir), (addr))))