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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/x86/include/asm/pat.h | |
| parent | Initial commit. (diff) | |
| download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip | |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86/include/asm/pat.h')
| -rw-r--r-- | arch/x86/include/asm/pat.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/x86/include/asm/pat.h b/arch/x86/include/asm/pat.h new file mode 100644 index 000000000..92015c65f --- /dev/null +++ b/arch/x86/include/asm/pat.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_PAT_H +#define _ASM_X86_PAT_H + +#include <linux/types.h> +#include <asm/pgtable_types.h> + +bool pat_enabled(void); +void pat_disable(const char *reason); +extern void pat_init(void); +extern void init_cache_modes(void); + +extern int reserve_memtype(u64 start, u64 end, + enum page_cache_mode req_pcm, enum page_cache_mode *ret_pcm); +extern int free_memtype(u64 start, u64 end); + +extern int kernel_map_sync_memtype(u64 base, unsigned long size, + enum page_cache_mode pcm); + +int io_reserve_memtype(resource_size_t start, resource_size_t end, + enum page_cache_mode *pcm); + +void io_free_memtype(resource_size_t start, resource_size_t end); + +bool pat_pfn_immune_to_uc_mtrr(unsigned long pfn); + +#endif /* _ASM_X86_PAT_H */ |