Contributors: 15
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Ingo Molnar |
58 |
26.85% |
10 |
32.26% |
| Suresh B. Siddha |
52 |
24.07% |
3 |
9.68% |
| Yu-cheng Yu |
33 |
15.28% |
3 |
9.68% |
| Dave Hansen |
16 |
7.41% |
3 |
9.68% |
| Sheng Yang |
16 |
7.41% |
2 |
6.45% |
| Eric Biggers |
12 |
5.56% |
1 |
3.23% |
| Fenghua Yu |
11 |
5.09% |
1 |
3.23% |
| H. Peter Anvin |
5 |
2.31% |
1 |
3.23% |
| Rik Van Riel |
4 |
1.85% |
1 |
3.23% |
| Liu Jinsong |
3 |
1.39% |
1 |
3.23% |
| Sebastian Andrzej Siewior |
2 |
0.93% |
1 |
3.23% |
| Greg Kroah-Hartman |
1 |
0.46% |
1 |
3.23% |
| Andrew Lutomirski |
1 |
0.46% |
1 |
3.23% |
| Qiaowei Ren |
1 |
0.46% |
1 |
3.23% |
| Kees Cook |
1 |
0.46% |
1 |
3.23% |
| Total |
216 |
|
31 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_X86_XSAVE_H
#define __ASM_X86_XSAVE_H
#include <linux/uaccess.h>
#include <linux/types.h>
#include <asm/processor.h>
#include <asm/user.h>
/* Bit 63 of XCR0 is reserved for future expansion */
#define XFEATURE_MASK_EXTEND (~(XFEATURE_MASK_FPSSE | (1ULL << 63)))
#define XSTATE_CPUID 0x0000000d
#define FXSAVE_SIZE 512
#define XSAVE_HDR_SIZE 64
#define XSAVE_HDR_OFFSET FXSAVE_SIZE
#define XSAVE_YMM_SIZE 256
#define XSAVE_YMM_OFFSET (XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET)
/* Supervisor features */
#define XFEATURE_MASK_SUPERVISOR (XFEATURE_MASK_PT)
/* All currently supported features */
#define XCNTXT_MASK (XFEATURE_MASK_FP | \
XFEATURE_MASK_SSE | \
XFEATURE_MASK_YMM | \
XFEATURE_MASK_OPMASK | \
XFEATURE_MASK_ZMM_Hi256 | \
XFEATURE_MASK_Hi16_ZMM | \
XFEATURE_MASK_PKRU | \
XFEATURE_MASK_BNDREGS | \
XFEATURE_MASK_BNDCSR)
#ifdef CONFIG_X86_64
#define REX_PREFIX "0x48, "
#else
#define REX_PREFIX
#endif
extern u64 xfeatures_mask;
extern u64 xstate_fx_sw_bytes[USER_XSTATE_FX_SW_WORDS];
extern void __init update_regset_xstate_info(unsigned int size,
u64 xstate_mask);
void fpu__xstate_clear_all_cpu_caps(void);
void *get_xsave_addr(struct xregs_state *xsave, int xfeature_nr);
const void *get_xsave_field_ptr(int xfeature_nr);
int using_compacted_format(void);
int copy_xstate_to_kernel(void *kbuf, struct xregs_state *xsave, unsigned int offset, unsigned int size);
int copy_xstate_to_user(void __user *ubuf, struct xregs_state *xsave, unsigned int offset, unsigned int size);
int copy_kernel_to_xstate(struct xregs_state *xsave, const void *kbuf);
int copy_user_to_xstate(struct xregs_state *xsave, const void __user *ubuf);
/* Validate an xstate header supplied by userspace (ptrace or sigreturn) */
extern int validate_xstate_header(const struct xstate_header *hdr);
#endif