Function report |
Source Code:arch\x86\kernel\fpu\core.c |
Create Date:2022-07-28 07:49:29 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Clear FPU registers by setting them up from* the init fpstate:
Proto:static inline void copy_init_fpstate_to_fpregs(void)
Type:void
Parameter:Nothing
301 | If use_xsave() Then Restore processor xstate from xsave area. |
303 | Else if static_cpu_has(FXSAVE/FXRSTOR, CR4.OSFXSR ) Then copy_kernel_to_fxregs( & fxsave) |
305 | Else copy_kernel_to_fregs( & fsave) |
308 | If boot_cpu_has(OS Protection Keys Enable ) Then copy_init_pkru_to_fpregs() |
311 | fpregs_mark_activate() |
312 | fpregs_unlock() |
Name | Describe |
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fpu__clear | Clear the FPU state back to init state.* Called by sys_execve(), by the signal handler code and by various* error paths. |
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