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| author | Pavel Tatashin <pasha.tatashin@soleen.com> | 2021-01-25 20:19:09 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-01-27 16:41:12 +0100 |
| commit | 50f53fb721817a6efa541cca24f1b7caa84801c1 (patch) | |
| tree | 6a4b44e8dc0471a45c7aeaf1216ce2b9cccf404c /arch/arm64/include/asm/trans_pgd.h | |
| parent | arm64: hibernate: move page handling function to new trans_pgd.c (diff) | |
| download | linux-50f53fb721817a6efa541cca24f1b7caa84801c1.tar.xz linux-50f53fb721817a6efa541cca24f1b7caa84801c1.zip | |
arm64: trans_pgd: make trans_pgd_map_page generic
kexec is going to use a different allocator, so make
trans_pgd_map_page to accept allocator as an argument, and also
kexec is going to use a different map protection, so also pass
it via argument.
Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Link: https://lore.kernel.org/r/20210125191923.1060122-5-pasha.tatashin@soleen.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/trans_pgd.h')
| -rw-r--r-- | arch/arm64/include/asm/trans_pgd.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/trans_pgd.h b/arch/arm64/include/asm/trans_pgd.h index 23153c13d1ce..b46409b25234 100644 --- a/arch/arm64/include/asm/trans_pgd.h +++ b/arch/arm64/include/asm/trans_pgd.h @@ -12,10 +12,25 @@ #include <linux/types.h> #include <asm/pgtable-types.h> +/* + * trans_alloc_page + * - Allocator that should return exactly one zeroed page, if this + * allocator fails, trans_pgd_create_copy() and trans_pgd_map_page() + * return -ENOMEM error. + * + * trans_alloc_arg + * - Passed to trans_alloc_page as an argument + */ + +struct trans_pgd_info { + void * (*trans_alloc_page)(void *arg); + void *trans_alloc_arg; +}; + int trans_pgd_create_copy(pgd_t **dst_pgdp, unsigned long start, unsigned long end); -int trans_pgd_map_page(pgd_t *trans_pgd, void *page, unsigned long dst_addr, - pgprot_t pgprot); +int trans_pgd_map_page(struct trans_pgd_info *info, pgd_t *trans_pgd, + void *page, unsigned long dst_addr, pgprot_t pgprot); #endif /* _ASM_TRANS_TABLE_H */ |