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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , linux-kernel@vger.kernel.org (open list), llvm@lists.linux.dev (open list:CLANG/LLVM BUILD SUPPORT:Keyword:\b(?i:clang|llvm)\b) Subject: [PATCH] mm: move phys_mem_access_prot_allowed to header Date: Mon, 4 May 2026 18:01:12 -0700 Message-ID: <20260505010112.645361-1-rosenp@gmail.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit phys_mem_access_prot_allowed is only implemented for X86. For others, it returns 1. Move it to header to avoid using __weak. Fixes compilation with make LLVM=1 ARCH=mips Signed-off-by: Rosen Penev --- drivers/char/mem.c | 6 ------ include/linux/pgtable.h | 8 ++++++++ 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 5fd421e48c04..ae8449674f46 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -239,12 +239,6 @@ static ssize_t write_mem(struct file *file, const char __user *buf, return written; } -int __weak phys_mem_access_prot_allowed(struct file *file, - unsigned long pfn, unsigned long size, pgprot_t *vma_prot) -{ - return 1; -} - #ifndef __HAVE_PHYS_MEM_ACCESS_PROT /* diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index cdd68ed3ae1a..72a7fa388e88 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -2154,8 +2154,16 @@ static inline int pmd_free_pte_page(pmd_t *pmd, unsigned long addr) #endif struct file; +#ifdef CONFIG_X86 int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn, unsigned long size, pgprot_t *vma_prot); +#else +static inline +int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn, + unsigned long size, pgprot_t *vma_prot) { + return 1; +} +#endif #ifndef CONFIG_X86_ESPFIX64 static inline void init_espfix_bsp(void) { } -- 2.54.0