Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\fpu\signal.c Create Date:2022-07-28 07:50:06
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:Restore the extended state if present. Otherwise, restore the FP/SSE state.

Proto:static int copy_user_to_fpregs_zeroing(void __user *buf, u64 xbv, int fx_only)

Type:int

Parameter:

TypeParameterName
void __user *buf
u64xbv
intfx_only
255  If use_xsave() Then
256  If fx_only Then
257  init_bv = xfeatures_mask & ~XFEATURE_MASK_FPSSE
258  Restore processor xstate from xsave area.
259  Return copy_user_to_fxregs(buf)
260  Else
261  init_bv = xfeatures_mask & ~xbv
262  If Value for the false possibility is greater at compile time(init_bv) Then Restore processor xstate from xsave area.
264  Return Restore xstate from user space xsave area.
266  Else if use_fxsr() Then
267  Return copy_user_to_fxregs(buf)
268  Else Return copy_user_to_fregs(buf)
Caller
NameDescribe
__fpu__restore_sig