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Sun, 1 Dec 2019 01:52:17 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3ED78217AB; Sun, 1 Dec 2019 01:52:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575165136; bh=yggEMZK3Ud9wFxPRNNnrIdqbf2FlATsEoHAKWLgn0nY=; h=Date:From:To:Subject:From; b=D5XGx9s/cpUhuyt97CEMIUCVOHx4BgwqXYfvlOaxdQMe2ZXLJOpR0EzuJ3ohifJnY 9WT/d4+8CnI5tnkrCWzjrdfRZOWr9lj/xko2OynsrL2cWkDV4ef8B5dpfyG573KdhU NJnU21C4RKJ3443as+CeL3f6a2qVcYKqnopOaMS0= Date: Sat, 30 Nov 2019 17:52:14 -0800 From: akpm@linux-foundation.org To: akpm@linux-foundation.org, alex@ghiti.fr, aou@eecs.berkeley.edu, ard.biesheuvel@linaro.org, arnd@arndb.de, aryabinin@virtuozzo.com, benh@kernel.crashing.org, borntraeger@de.ibm.com, bp@alien8.de, catalin.marinas@arm.com, dave.hansen@linux.intel.com, dave.jiang@intel.com, davem@davemloft.net, dvyukov@google.com, glider@google.com, gor@linux.ibm.com, heiko.carstens@de.ibm.com, hpa@zytor.com, james.morse@arm.com, jhogan@kernel.org, kan.liang@linux.intel.com, linux-mm@kvack.org, linux@armlinux.org.uk, luto@kernel.org, mark.rutland@arm.com, mawilcox@microsoft.com, mingo@elte.hu, mm-commits@vger.kernel.org, mpe@ellerman.id.au, n-horiguchi@ah.jp.nec.com, palmer@sifive.com, paul.burton@mips.com, paul.walmsley@sifive.com, paulus@samba.org, peterz@infradead.org, ralf@linux-mips.org, shashim@codeaurora.org, steven.price@arm.com, tglx@linutronix.de, torvalds@linux-foundation.org, vgupta@synopsys.com, will@kernel.org, zong.li@sifive.com Subject: [patch 054/158] sparc: mm: add p?d_leaf() definitions Message-ID: <20191201015214.jkpFXFabz%akpm@linux-foundation.org> User-Agent: s-nail v14.8.16 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: From: Steven Price Subject: sparc: mm: add p?d_leaf() definitions 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_leaf() functions/macros. For sparc 64 bit, pmd_large() and pud_large() are already provided, so add macros to provide the p?d_leaf names required by the generic code. Link: http://lkml.kernel.org/r/20191028135910.33253-10-steven.price@arm.com Signed-off-by: Steven Price Acked-by: David S. Miller Cc: Albert Ou Cc: Alexander Potapenko Cc: Alexandre Ghiti Cc: Andrey Ryabinin Cc: Andy Lutomirski Cc: Ard Biesheuvel Cc: Arnd Bergmann Cc: Benjamin Herrenschmidt Cc: Borislav Petkov Cc: Catalin Marinas Cc: Christian Borntraeger Cc: Dave Hansen Cc: Dave Jiang Cc: Dmitry Vyukov Cc: Heiko Carstens Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: James Hogan Cc: James Morse Cc: "Liang, Kan" Cc: Mark Rutland Cc: Matthew Wilcox Cc: Michael Ellerman Cc: Naoya Horiguchi Cc: Palmer Dabbelt Cc: Paul Burton Cc: Paul Mackerras Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Ralf Baechle Cc: Russell King Cc: Shiraz Hashim Cc: Thomas Gleixner Cc: Vasily Gorbik Cc: Vineet Gupta Cc: Will Deacon Cc: Zong Li Signed-off-by: Andrew Morton --- arch/sparc/include/asm/pgtable_64.h | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/sparc/include/asm/pgtable_64.h~sparc-mm-add-pd_leaf-definitions +++ a/arch/sparc/include/asm/pgtable_64.h @@ -683,6 +683,7 @@ static inline unsigned long pte_special( return pte_val(pte) & _PAGE_SPECIAL; } +#define pmd_leaf pmd_large static inline unsigned long pmd_large(pmd_t pmd) { pte_t pte = __pte(pmd_val(pmd)); @@ -867,6 +868,7 @@ static inline unsigned long pud_page_vad /* only used by the stubbed out hugetlb gup code, should never be called */ #define pgd_page(pgd) NULL +#define pud_leaf pud_large static inline unsigned long pud_large(pud_t pud) { pte_t pte = __pte(pud_val(pud));