Function report |
Source Code:arch\x86\kernel\fpu\regset.c |
Create Date:2022-07-28 07:49:41 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:xstateregs_set
Proto:int xstateregs_set(struct task_struct *target, const struct user_regset *regset, unsigned int pos, unsigned int count, const void *kbuf, const void __user *ubuf)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
struct task_struct * | target | |
const struct user_regset * | regset | |
unsigned int | pos | |
unsigned int | count | |
const void * | kbuf | |
const void __user * | ubuf |
121 | If Not boot_cpu_has(XSAVE/XRSTOR/XSETBV/XGETBV instructions ) Then Return -ENODEV |
127 | If pos != 0 || count < fpu_user_xstate_size Then Return -EFAULT |
134 | If using_compacted_format() Then |
135 | If kbuf Then ret = copy_kernel_to_xstate(xsave, kbuf) |
137 | Else ret = copy_user_to_xstate(xsave, ubuf) |
139 | Else |
141 | If Not ret Then ret = Validate an xstate header supplied by userspace (ptrace or sigreturn) |
156 | Return ret |
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