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[217.140.101.70]) by mx.google.com with ESMTP id m5si1981548eje.78.2019.02.27.09.06.47 for ; Wed, 27 Feb 2019 09:06:48 -0800 (PST) Received-SPF: pass (google.com: domain of steven.price@arm.com designates 217.140.101.70 as permitted sender) client-ip=217.140.101.70; Authentication-Results: mx.google.com; spf=pass (google.com: domain of steven.price@arm.com designates 217.140.101.70 as permitted sender) smtp.mailfrom=steven.price@arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 11CBA1684; Wed, 27 Feb 2019 09:06:47 -0800 (PST) Received: from e112269-lin.arm.com (e112269-lin.cambridge.arm.com [10.1.196.69]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 5EEB53F738; Wed, 27 Feb 2019 09:06:43 -0800 (PST) From: Steven Price To: linux-mm@kvack.org Cc: Steven Price , Andy Lutomirski , Ard Biesheuvel , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Dave Hansen , Ingo Molnar , James Morse , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Peter Zijlstra , Thomas Gleixner , Will Deacon , x86@kernel.org, "H. Peter Anvin" , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Mark Rutland , "Liang, Kan" , Mark Salter , Aurelien Jacquiot , linux-c6x-dev@linux-c6x.org Subject: [PATCH v3 05/34] c6x: mm: Add p?d_large() definitions Date: Wed, 27 Feb 2019 17:05:39 +0000 Message-Id: <20190227170608.27963-6-steven.price@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190227170608.27963-1-steven.price@arm.com> References: <20190227170608.27963-1-steven.price@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: walk_page_range() is going to be allowed to walk page tables other than those of user space. For this it needs to know when it has reached a 'leaf' entry in the page tables. This information is provided by the p?d_large() functions/macros. For c6x there's no MMU so there's never a large page, so just add stubs. CC: Mark Salter CC: Aurelien Jacquiot CC: linux-c6x-dev@linux-c6x.org Signed-off-by: Steven Price --- arch/c6x/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/c6x/include/asm/pgtable.h b/arch/c6x/include/asm/pgtable.h index ec4db6df5e0d..d532b7df9001 100644 --- a/arch/c6x/include/asm/pgtable.h +++ b/arch/c6x/include/asm/pgtable.h @@ -26,6 +26,7 @@ #define pgd_present(pgd) (1) #define pgd_none(pgd) (0) #define pgd_bad(pgd) (0) +#define pgd_large(pgd) (0) #define pgd_clear(pgdp) #define kern_addr_valid(addr) (1) @@ -34,6 +35,7 @@ #define pmd_present(x) (pmd_val(x)) #define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0) #define pmd_bad(x) (pmd_val(x) & ~PAGE_MASK) +#define pmd_large(pgd) (0) #define PAGE_NONE __pgprot(0) /* these mean nothing to NO_MM */ #define PAGE_SHARED __pgprot(0) /* these mean nothing to NO_MM */ -- 2.20.1