1669ebabbSIngo Molnar #ifndef __ASM_X86_XSAVE_H 2669ebabbSIngo Molnar #define __ASM_X86_XSAVE_H 3669ebabbSIngo Molnar 4669ebabbSIngo Molnar #include <linux/types.h> 5669ebabbSIngo Molnar #include <asm/processor.h> 659a36d16SIngo Molnar #include <linux/uaccess.h> 7669ebabbSIngo Molnar 8669ebabbSIngo Molnar /* Bit 63 of XCR0 is reserved for future expansion */ 9*d91cab78SDave Hansen #define XFEATURE_MASK_EXTEND (~(XFEATURE_MASK_FPSSE | (1ULL << 63))) 10669ebabbSIngo Molnar 11677b98bdSIngo Molnar #define XSTATE_CPUID 0x0000000d 12677b98bdSIngo Molnar 13669ebabbSIngo Molnar #define FXSAVE_SIZE 512 14669ebabbSIngo Molnar 15669ebabbSIngo Molnar #define XSAVE_HDR_SIZE 64 16669ebabbSIngo Molnar #define XSAVE_HDR_OFFSET FXSAVE_SIZE 17669ebabbSIngo Molnar 18669ebabbSIngo Molnar #define XSAVE_YMM_SIZE 256 19669ebabbSIngo Molnar #define XSAVE_YMM_OFFSET (XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET) 20669ebabbSIngo Molnar 21669ebabbSIngo Molnar /* Supported features which support lazy state saving */ 22*d91cab78SDave Hansen #define XFEATURE_MASK_LAZY (XFEATURE_MASK_FP | \ 23*d91cab78SDave Hansen XFEATURE_MASK_SSE | \ 24*d91cab78SDave Hansen XFEATURE_MASK_YMM | \ 25*d91cab78SDave Hansen XFEATURE_MASK_OPMASK | \ 26*d91cab78SDave Hansen XFEATURE_MASK_ZMM_Hi256 | \ 27*d91cab78SDave Hansen XFEATURE_MASK_Hi16_ZMM) 28669ebabbSIngo Molnar 29669ebabbSIngo Molnar /* Supported features which require eager state saving */ 30*d91cab78SDave Hansen #define XFEATURE_MASK_EAGER (XFEATURE_MASK_BNDREGS | XFEATURE_MASK_BNDCSR) 31669ebabbSIngo Molnar 32669ebabbSIngo Molnar /* All currently supported features */ 33*d91cab78SDave Hansen #define XCNTXT_MASK (XFEATURE_MASK_LAZY | XFEATURE_MASK_EAGER) 34669ebabbSIngo Molnar 35669ebabbSIngo Molnar #ifdef CONFIG_X86_64 36669ebabbSIngo Molnar #define REX_PREFIX "0x48, " 37669ebabbSIngo Molnar #else 38669ebabbSIngo Molnar #define REX_PREFIX 39669ebabbSIngo Molnar #endif 40669ebabbSIngo Molnar 41669ebabbSIngo Molnar extern unsigned int xstate_size; 42669ebabbSIngo Molnar extern u64 xfeatures_mask; 43669ebabbSIngo Molnar extern u64 xstate_fx_sw_bytes[USER_XSTATE_FX_SW_WORDS]; 44669ebabbSIngo Molnar 45669ebabbSIngo Molnar extern void update_regset_xstate_info(unsigned int size, u64 xstate_mask); 46669ebabbSIngo Molnar 470a265375SDave Hansen void fpu__xstate_clear_all_cpu_caps(void); 48c47ada30SIngo Molnar void *get_xsave_addr(struct xregs_state *xsave, int xstate); 4904cd027bSDave Hansen const void *get_xsave_field_ptr(int xstate_field); 50669ebabbSIngo Molnar 51669ebabbSIngo Molnar #endif 52