diff options
Diffstat (limited to 'arch/x86/include/asm/set_memory.h')
| -rw-r--r-- | arch/x86/include/asm/set_memory.h | 73 |
1 files changed, 18 insertions, 55 deletions
diff --git a/arch/x86/include/asm/set_memory.h b/arch/x86/include/asm/set_memory.h index 07a25753e85c..61f56cdaccb5 100644 --- a/arch/x86/include/asm/set_memory.h +++ b/arch/x86/include/asm/set_memory.h @@ -4,12 +4,16 @@ #include <asm/page.h> #include <asm-generic/set_memory.h> +#include <asm/pgtable.h> + +#define set_memory_rox set_memory_rox +int set_memory_rox(unsigned long addr, int numpages); /* * The set_memory_* API can be used to change various attributes of a virtual * address range. The attributes include: - * Cachability : UnCached, WriteCombining, WriteThrough, WriteBack - * Executability : eXeutable, NoteXecutable + * Cacheability : UnCached, WriteCombining, WriteThrough, WriteBack + * Executability : eXecutable, NoteXecutable * Read/Write : ReadOnly, ReadWrite * Presence : NotPresent * Encryption : Encrypted, Decrypted @@ -34,28 +38,28 @@ * The caller is required to take care of these. */ +int __set_memory_prot(unsigned long addr, int numpages, pgprot_t prot); int _set_memory_uc(unsigned long addr, int numpages); int _set_memory_wc(unsigned long addr, int numpages); int _set_memory_wt(unsigned long addr, int numpages); int _set_memory_wb(unsigned long addr, int numpages); int set_memory_uc(unsigned long addr, int numpages); int set_memory_wc(unsigned long addr, int numpages); -int set_memory_wt(unsigned long addr, int numpages); int set_memory_wb(unsigned long addr, int numpages); int set_memory_np(unsigned long addr, int numpages); +int set_memory_p(unsigned long addr, int numpages); int set_memory_4k(unsigned long addr, int numpages); + +bool set_memory_enc_stop_conversion(void); int set_memory_encrypted(unsigned long addr, int numpages); int set_memory_decrypted(unsigned long addr, int numpages); -int set_memory_np_noalias(unsigned long addr, int numpages); -int set_memory_array_uc(unsigned long *addr, int addrinarray); -int set_memory_array_wc(unsigned long *addr, int addrinarray); -int set_memory_array_wt(unsigned long *addr, int addrinarray); -int set_memory_array_wb(unsigned long *addr, int addrinarray); +int set_memory_np_noalias(unsigned long addr, int numpages); +int set_memory_nonglobal(unsigned long addr, int numpages); +int set_memory_global(unsigned long addr, int numpages); int set_pages_array_uc(struct page **pages, int addrinarray); int set_pages_array_wc(struct page **pages, int addrinarray); -int set_pages_array_wt(struct page **pages, int addrinarray); int set_pages_array_wb(struct page **pages, int addrinarray); /* @@ -80,55 +84,14 @@ int set_pages_array_wb(struct page **pages, int addrinarray); int set_pages_uc(struct page *page, int numpages); int set_pages_wb(struct page *page, int numpages); -int set_pages_x(struct page *page, int numpages); -int set_pages_nx(struct page *page, int numpages); int set_pages_ro(struct page *page, int numpages); int set_pages_rw(struct page *page, int numpages); -extern int kernel_set_to_readonly; -void set_kernel_text_rw(void); -void set_kernel_text_ro(void); - -#ifdef CONFIG_X86_64 -static inline int set_mce_nospec(unsigned long pfn) -{ - unsigned long decoy_addr; - int rc; +int set_direct_map_invalid_noflush(struct page *page); +int set_direct_map_default_noflush(struct page *page); +int set_direct_map_valid_noflush(struct page *page, unsigned nr, bool valid); +bool kernel_page_present(struct page *page); - /* - * Mark the linear address as UC to make sure we don't log more - * errors because of speculative access to the page. - * We would like to just call: - * set_memory_uc((unsigned long)pfn_to_kaddr(pfn), 1); - * but doing that would radically increase the odds of a - * speculative access to the poison page because we'd have - * the virtual address of the kernel 1:1 mapping sitting - * around in registers. - * Instead we get tricky. We create a non-canonical address - * that looks just like the one we want, but has bit 63 flipped. - * This relies on set_memory_uc() properly sanitizing any __pa() - * results with __PHYSICAL_MASK or PTE_PFN_MASK. - */ - decoy_addr = (pfn << PAGE_SHIFT) + (PAGE_OFFSET ^ BIT(63)); - - rc = set_memory_uc(decoy_addr, 1); - if (rc) - pr_warn("Could not invalidate pfn=0x%lx from 1:1 map\n", pfn); - return rc; -} -#define set_mce_nospec set_mce_nospec - -/* Restore full speculative operation to the pfn. */ -static inline int clear_mce_nospec(unsigned long pfn) -{ - return set_memory_wb((unsigned long) pfn_to_kaddr(pfn), 1); -} -#define clear_mce_nospec clear_mce_nospec -#else -/* - * Few people would run a 32-bit kernel on a machine that supports - * recoverable errors because they have too much memory to boot 32-bit. - */ -#endif +extern int kernel_set_to_readonly; #endif /* _ASM_X86_SET_MEMORY_H */ |