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Mon, 04 May 2026 18:01:30 -0700 (PDT) Received: from ryzen ([2601:644:8000:5b5d:7285:c2ff:fe45:8a32]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ba1c451d9bsm53830935ad.1.2026.05.04.18.01.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 May 2026 18:01:29 -0700 (PDT) From: Rosen Penev To: linux-mm@kvack.org Cc: Arnd Bergmann , Greg Kroah-Hartman , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. 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 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 450B180003 X-Stat-Signature: juyfxcqg3ajpte41trczwe4iwi1c9uh4 X-Rspam-User: X-HE-Tag: 1777942892-11466 X-HE-Meta: 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 ZfhSGiSH 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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