mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 16:31:01 +07:00
7891bc0ab7
All fpu__xstate_clear_all_cpu_caps() does is to invoke one simple
function since commit
73e3a7d2a7 ("x86/fpu: Remove the explicit clearing of XSAVE dependent features")
so invoke that function directly and remove the wrapper.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190704060743.rvew4yrjd6n33uzx@linutronix.de
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/* 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 *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
|