1 #ifndef __ASM_X86_XSAVE_H
2 #define __ASM_X86_XSAVE_H
4 #include <linux/types.h>
5 #include <asm/processor.h>
6 #include <linux/uaccess.h>
8 /* Bit 63 of XCR0 is reserved for future expansion */
9 #define XFEATURE_MASK_EXTEND (~(XFEATURE_MASK_FPSSE | (1ULL << 63)))
11 #define XSTATE_CPUID 0x0000000d
13 #define FXSAVE_SIZE 512
15 #define XSAVE_HDR_SIZE 64
16 #define XSAVE_HDR_OFFSET FXSAVE_SIZE
18 #define XSAVE_YMM_SIZE 256
19 #define XSAVE_YMM_OFFSET (XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET)
21 /* Supervisor features */
22 #define XFEATURE_MASK_SUPERVISOR (XFEATURE_MASK_PT)
24 /* All currently supported features */
25 #define XCNTXT_MASK (XFEATURE_MASK_FP | \
28 XFEATURE_MASK_OPMASK | \
29 XFEATURE_MASK_ZMM_Hi256 | \
30 XFEATURE_MASK_Hi16_ZMM | \
31 XFEATURE_MASK_PKRU | \
32 XFEATURE_MASK_BNDREGS | \
36 #define REX_PREFIX "0x48, "
41 extern u64 xfeatures_mask
;
42 extern u64 xstate_fx_sw_bytes
[USER_XSTATE_FX_SW_WORDS
];
44 extern void __init
update_regset_xstate_info(unsigned int size
,
47 void fpu__xstate_clear_all_cpu_caps(void);
48 void *get_xsave_addr(struct xregs_state
*xsave
, int xstate
);
49 const void *get_xsave_field_ptr(int xstate_field
);
50 int using_compacted_format(void);
51 int copyout_from_xsaves(unsigned int pos
, unsigned int count
, void *kbuf
,
52 void __user
*ubuf
, struct xregs_state
*xsave
);
53 int copyin_to_xsaves(const void *kbuf
, const void __user
*ubuf
,
54 struct xregs_state
*xsave
);