mirror of https://gitee.com/openkylin/linux.git
x86/fpu: Factor out fpu__init_cpu_generic()
Factor out the generic bits from fpu__init_cpu(), to create a flat sequence of per CPU initialization function calls: fpu__init_cpu_generic(); fpu__init_cpu_xstate(); fpu__init_cpu_ctx_switch(); Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -136,9 +136,9 @@ static void fpu__init_cpu_ctx_switch(void)
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}
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}
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/*
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/*
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* Enable all supported FPU features. Called when a CPU is brought online.
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* Initialize the registers found in all CPUs, CR0 and CR4:
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*/
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*/
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void fpu__init_cpu(void)
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static void fpu__init_cpu_generic(void)
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{
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{
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unsigned long cr0;
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unsigned long cr0;
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unsigned long cr4_mask = 0;
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unsigned long cr4_mask = 0;
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@ -163,7 +163,14 @@ void fpu__init_cpu(void)
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if (!cpu_has_fpu)
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if (!cpu_has_fpu)
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cr0 |= X86_CR0_EM;
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cr0 |= X86_CR0_EM;
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write_cr0(cr0);
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write_cr0(cr0);
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}
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/*
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* Enable all supported FPU features. Called when a CPU is brought online.
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*/
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void fpu__init_cpu(void)
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{
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fpu__init_cpu_generic();
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fpu__init_cpu_xstate();
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fpu__init_cpu_xstate();
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fpu__init_cpu_ctx_switch();
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fpu__init_cpu_ctx_switch();
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}
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}
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