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Peter Anvin" , linux-riscv@lists.infradead.org, Will Deacon , "Liang, Kan" , x86@kernel.org, Ingo Molnar , Palmer Dabbelt , Albert Ou , Arnd Bergmann , =?ISO-8859-15?Q?J=E9r=F4me_Glisse?= , Borislav Petkov , Andy Lutomirski , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Ard Biesheuvel , linux-kernel@vger.kernel.org, James Morse , Andrew Morton Subject: Re: [PATCH v11 07/22] riscv: mm: Add p?d_leaf() definitions In-Reply-To: <20191007153822.16518-8-steven.price@arm.com> Message-ID: References: <20191007153822.16518-1-steven.price@arm.com> <20191007153822.16518-8-steven.price@arm.com> User-Agent: Alpine 2.21.9999 (DEB 301 2018-08-15) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII 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: On Mon, 7 Oct 2019, Steven Price wrote: > 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 riscv a page is a leaf page when it has a read, write or execute bit > set on it. > > CC: Palmer Dabbelt > CC: Albert Ou > CC: linux-riscv@lists.infradead.org > Signed-off-by: Steven Price Acked-by: Paul Walmsley # for arch/riscv Alex has a good point, but probably the right thing to do is to replace the contents of the arch/riscv/mm/hugetlbpage.c p{u,m}d_huge() functions with calls to Steven's new static inline functions. - Paul