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Shutemov" To: Helge Deller Subject: Re: [PATCH v3 15/34] parisc: mm: Add p?d_large() definitions Message-ID: <20190301221213.snm7cwowr67pdifs@kshutemo-mobl1> References: <20190227170608.27963-1-steven.price@arm.com> <20190227170608.27963-16-steven.price@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20180716 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190301_141218_866628_0BF3F893 X-CRM114-Status: GOOD ( 12.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Peter Zijlstra , Catalin Marinas , Dave Hansen , Will Deacon , linux-mm@kvack.org, "H. Peter Anvin" , "Liang, Kan" , x86@kernel.org, "James E.J. Bottomley" , Steven Price , Ingo Molnar , Arnd Bergmann , =?utf-8?B?SsOpcsO0bWU=?= Glisse , Borislav Petkov , Andy Lutomirski , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org, Ard Biesheuvel , linux-kernel@vger.kernel.org, James Morse Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Feb 27, 2019 at 07:54:22PM +0100, Helge Deller wrote: > On 27.02.19 18:05, 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_large() functions/macros. > > > > For parisc, we don't support large pages, so add stubs returning 0. > > We do support huge pages on parisc, but not yet on those levels. Just curious, what level do parisc supports huge pages on? AFAICS, it can have 2- or 3- level paging and the patch defines helpers for two level: pgd and pmd. Hm? -- Kirill A. Shutemov _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel