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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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499f8f84b8
BTW, what does pat_wc_enabled stand for? Does it mean "write-combining"? Currently it is used to globally switch on or off PAT support. Thus I renamed it to pat_enabled. I think this increases readability (and hope that I didn't miss something). Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
23 lines
500 B
C
23 lines
500 B
C
#ifndef _ASM_PAT_H
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#define _ASM_PAT_H
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#include <linux/types.h>
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#ifdef CONFIG_X86_PAT
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extern int pat_enabled;
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extern void validate_pat_support(struct cpuinfo_x86 *c);
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#else
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static const int pat_enabled;
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static inline void validate_pat_support(struct cpuinfo_x86 *c) { }
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#endif
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extern void pat_init(void);
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extern int reserve_memtype(u64 start, u64 end,
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unsigned long req_type, unsigned long *ret_type);
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extern int free_memtype(u64 start, u64 end);
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extern void pat_disable(char *reason);
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#endif
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