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| author | Yoshinori Sato <ysato@users.sourceforge.jp> | 2019-06-02 08:46:11 +0200 |
|---|---|---|
| committer | Yoshinori Sato <ysato@users.sourceforge.jp> | 2019-06-02 08:46:11 +0200 |
| commit | 860dbce3d8dd90cb9e909c58fa79808766243651 (patch) | |
| tree | f68920c82fa779ae37bbce08a58259e5c3934ab3 /arch/parisc/include/asm/fixmap.h | |
| parent | Fix allyesconfig output. (diff) | |
| parent | Merge tag 'nfsd-5.2-1' of git://linux-nfs.org/~bfields/linux (diff) | |
| download | linux-860dbce3d8dd90cb9e909c58fa79808766243651.tar.xz linux-860dbce3d8dd90cb9e909c58fa79808766243651.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Diffstat (limited to 'arch/parisc/include/asm/fixmap.h')
| -rw-r--r-- | arch/parisc/include/asm/fixmap.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/arch/parisc/include/asm/fixmap.h b/arch/parisc/include/asm/fixmap.h index f7c3a0905de4..288da73d4cc0 100644 --- a/arch/parisc/include/asm/fixmap.h +++ b/arch/parisc/include/asm/fixmap.h @@ -15,17 +15,34 @@ * from areas congruently mapped with user space. It is 8MB large * and must be 16MB aligned */ #define TMPALIAS_MAP_START ((__PAGE_OFFSET) - 16*1024*1024) + +#define FIXMAP_SIZE (FIX_BITMAP_COUNT << PAGE_SHIFT) +#define FIXMAP_START (TMPALIAS_MAP_START - FIXMAP_SIZE) /* This is the kernel area for all maps (vmalloc, dma etc.) most * usually, it extends up to TMPALIAS_MAP_START. Virtual addresses * 0..GATEWAY_PAGE_SIZE are reserved for the gateway page */ #define KERNEL_MAP_START (GATEWAY_PAGE_SIZE) -#define KERNEL_MAP_END (TMPALIAS_MAP_START) +#define KERNEL_MAP_END (FIXMAP_START) #ifndef __ASSEMBLY__ + + +enum fixed_addresses { + /* Support writing RO kernel text via kprobes, jump labels, etc. */ + FIX_TEXT_POKE0, + FIX_BITMAP_COUNT +}; + extern void *parisc_vmalloc_start; #define PCXL_DMA_MAP_SIZE (8*1024*1024) #define VMALLOC_START ((unsigned long)parisc_vmalloc_start) #define VMALLOC_END (KERNEL_MAP_END) + +#define __fix_to_virt(_x) (FIXMAP_START + ((_x) << PAGE_SHIFT)) + +void set_fixmap(enum fixed_addresses idx, phys_addr_t phys); +void clear_fixmap(enum fixed_addresses idx); + #endif /*__ASSEMBLY__*/ #endif /*_ASM_FIXMAP_H*/ |