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7880f74645
Add a function to check and keep identity maps in sync, when changing any memory type. One of the follow on patches will also use this routine. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Dave Airlie <airlied@redhat.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Eric Anholt <eric@anholt.net> Cc: Keith Packard <keithp@keithp.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
26 lines
618 B
C
26 lines
618 B
C
#ifndef _ASM_X86_PAT_H
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#define _ASM_X86_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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extern int kernel_map_sync_memtype(u64 base, unsigned long size,
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unsigned long flag);
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#endif /* _ASM_X86_PAT_H */
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