From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Steven Price Subject: [PATCH v3 18/34] s390: mm: Add p?d_large() definitions Date: Wed, 27 Feb 2019 17:05:52 +0000 Message-Id: <20190227170608.27963-19-steven.price@arm.com> In-Reply-To: <20190227170608.27963-1-steven.price@arm.com> References: <20190227170608.27963-1-steven.price@arm.com> MIME-Version: 1.0 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 List-Archive: To: linux-mm@kvack.org Cc: Mark Rutland , Peter Zijlstra , Catalin Marinas , Dave Hansen , Will Deacon , "H. Peter Anvin" , "Liang, Kan" , linux-s390@vger.kernel.org, x86@kernel.org, Steven Price , Ingo Molnar , Arnd Bergmann , Heiko Carstens , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Borislav Petkov , Andy Lutomirski , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Ard Biesheuvel , linux-kernel@vger.kernel.org, James Morse , Martin Schwidefsky 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 s390, we don't support large pages, so add a stub returning 0. CC: Martin Schwidefsky CC: Heiko Carstens CC: linux-s390@vger.kernel.org Signed-off-by: Steven Price --- arch/s390/include/asm/pgtable.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 063732414dfb..9617f1fb69b4 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -605,6 +605,11 @@ static inline int pgd_present(pgd_t pgd) return (pgd_val(pgd) & _REGION_ENTRY_ORIGIN) != 0UL; } +static inline int pgd_large(pgd_t pgd) +{ + return 0; +} + static inline int pgd_none(pgd_t pgd) { if (pgd_folded(pgd)) @@ -645,6 +650,11 @@ static inline int p4d_present(p4d_t p4d) return (p4d_val(p4d) & _REGION_ENTRY_ORIGIN) != 0UL; } +static inline int p4d_large(p4d_t p4d) +{ + return 0; +} + static inline int p4d_none(p4d_t p4d) { if (p4d_folded(p4d)) -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel