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d="scan'208";a="147671115" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 19 Sep 2020 04:12:50 +0800 IronPort-SDR: ZV661a55jwf/88N514oJarnmO1vanwdlOtyTxtlSesg353BWOfrheuXPKbc7qrkLrupkf9jVRG wEosVmfptqWg== Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Sep 2020 12:59:02 -0700 IronPort-SDR: nFg7iJKfhXph3l+76Ansy35dqHtaUlKkxiQMAKc1U64BmEUoqafedKZBwy+X4FreVqruthP5F4 N/AvufJIo0Mw== WDCIronportException: Internal Received: from us3v3d262.ad.shared (HELO jedi-01.hgst.com) ([10.86.60.69]) by uls-op-cesaip02.wdc.com with ESMTP; 18 Sep 2020 13:12:50 -0700 From: Atish Patra To: linux-kernel@vger.kernel.org Subject: [RFT PATCH v3 4/5] riscv: Add support pte_protnone and pmd_protnone if CONFIG_NUMA_BALANCING Date: Fri, 18 Sep 2020 13:11:39 -0700 Message-Id: <20200918201140.3172284-5-atish.patra@wdc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200918201140.3172284-1-atish.patra@wdc.com> References: <20200918201140.3172284-1-atish.patra@wdc.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200918_161253_133146_ED2D2C7A X-CRM114-Status: GOOD ( 14.29 ) X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [216.71.154.42 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record 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 -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 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: David Hildenbrand , Catalin Marinas , Jonathan Cameron , Atish Patra , Zong Li , linux-riscv@lists.infradead.org, Will Deacon , linux-arch@vger.kernel.org, Anup Patel , "Rafael J. Wysocki" , Steven Price , Greentime Hu , Albert Ou , Arnd Bergmann , Anshuman Khandual , Paul Walmsley , linux-arm-kernel@lists.infradead.org, Greg Kroah-Hartman , Palmer Dabbelt , Mike Rapoport , Andrew Morton , Nicolas Saenz Julienne Sender: "linux-riscv" Errors-To: linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org From: Greentime Hu These two functions are used to distinguish between PROT_NONENUMA protections and hinting fault protections. Signed-off-by: Greentime Hu --- arch/riscv/include/asm/pgtable.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 515b42f98d34..2751110675e6 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -183,6 +183,11 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd) return (unsigned long)pfn_to_virt(pmd_val(pmd) >> _PAGE_PFN_SHIFT); } +static inline pte_t pmd_pte(pmd_t pmd) +{ + return __pte(pmd_val(pmd)); +} + /* Yields the page frame number (PFN) of a page table entry */ static inline unsigned long pte_pfn(pte_t pte) { @@ -286,6 +291,21 @@ static inline pte_t pte_mkhuge(pte_t pte) return pte; } +#ifdef CONFIG_NUMA_BALANCING +/* + * See the comment in include/asm-generic/pgtable.h + */ +static inline int pte_protnone(pte_t pte) +{ + return (pte_val(pte) & (_PAGE_PRESENT | _PAGE_PROT_NONE)) == _PAGE_PROT_NONE; +} + +static inline int pmd_protnone(pmd_t pmd) +{ + return pte_protnone(pmd_pte(pmd)); +} +#endif + /* Modify page protection bits */ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) {