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charset="UTF-8" X-Stat-Signature: d91kkf41fuowj919pumeu8bodojqxk3j X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: A536B2000B X-Rspam-User: X-HE-Tag: 1788346276-537968 X-HE-Meta: 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 7c3M/6jg 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Add implementation for the unsafe functions __set_direct_map*(). They do not verify for can_set_direct_map() and expect the caller to do so beforehand. Signed-off-by: Vincent Donnefort diff --git a/arch/arm64/include/asm/set_memory.h b/arch/arm64/include/asm/set_memory.h index 1a37f4ef130b..080a40846bbe 100644 --- a/arch/arm64/include/asm/set_memory.h +++ b/arch/arm64/include/asm/set_memory.h @@ -16,6 +16,10 @@ int set_memory_valid(unsigned long addr, int numpages, int enable); int set_direct_map_invalid_noflush(struct page *page); int set_direct_map_default_noflush(struct page *page); +int __set_direct_map_invalid_noflush(struct page *page); +#define __set_direct_map_invalid_noflush __set_direct_map_invalid_noflush +int __set_direct_map_default_noflush(struct page *page); +#define __set_direct_map_default_noflush __set_direct_map_default_noflush int set_direct_map_valid_noflush(struct page *page, unsigned nr, bool valid); bool kernel_page_present(struct page *page); diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c index c59ef17eb0d0..28adab0edace 100644 --- a/arch/arm64/mm/pageattr.c +++ b/arch/arm64/mm/pageattr.c @@ -294,28 +294,38 @@ int set_memory_valid(unsigned long addr, int numpages, int enable) __pgprot(PTE_PRESENT_VALID_KERNEL)); } -int set_direct_map_invalid_noflush(struct page *page) +int __set_direct_map_invalid_noflush(struct page *page) { pgprot_t clear_mask = __pgprot(PTE_PRESENT_VALID_KERNEL); pgprot_t set_mask = __pgprot(PTE_PRESENT_INVALID); + return update_range_prot((unsigned long)page_address(page), + PAGE_SIZE, set_mask, clear_mask); +} + +int set_direct_map_invalid_noflush(struct page *page) +{ if (!can_set_direct_map()) return 0; + return __set_direct_map_invalid_noflush(page); +} + +int __set_direct_map_default_noflush(struct page *page) +{ + pgprot_t set_mask = __pgprot(PTE_PRESENT_VALID_KERNEL | PTE_WRITE); + pgprot_t clear_mask = __pgprot(PTE_PRESENT_INVALID | PTE_RDONLY); + return update_range_prot((unsigned long)page_address(page), PAGE_SIZE, set_mask, clear_mask); } int set_direct_map_default_noflush(struct page *page) { - pgprot_t set_mask = __pgprot(PTE_PRESENT_VALID_KERNEL | PTE_WRITE); - pgprot_t clear_mask = __pgprot(PTE_PRESENT_INVALID | PTE_RDONLY); - if (!can_set_direct_map()) return 0; - return update_range_prot((unsigned long)page_address(page), - PAGE_SIZE, set_mask, clear_mask); + return __set_direct_map_default_noflush(page); } static int __set_memory_enc_dec(unsigned long addr, -- 2.55.0.970.g62bdec98f9-goog