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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>
This commit is contained in:
Ingo Molnar 2015-04-26 14:32:34 +02:00
parent 21c4cd108a
commit b11316ed9e
1 changed files with 9 additions and 2 deletions
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11
arch/x86/kernel/fpu/init.c
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@ -136,9 +136,9 @@ static void fpu__init_cpu_ctx_switch(void)
} }
/* /*
* Enable all supported FPU features. Called when a CPU is brought online. * Initialize the registers found in all CPUs, CR0 and CR4:
*/ */
void fpu__init_cpu(void) static void fpu__init_cpu_generic(void)
{ {
unsigned long cr0; unsigned long cr0;
unsigned long cr4_mask = 0; unsigned long cr4_mask = 0;
@ -163,7 +163,14 @@ void fpu__init_cpu(void)
if (!cpu_has_fpu) if (!cpu_has_fpu)
cr0 |= X86_CR0_EM; cr0 |= X86_CR0_EM;
write_cr0(cr0); write_cr0(cr0);
}
/*
* Enable all supported FPU features. Called when a CPU is brought online.
*/
void fpu__init_cpu(void)
{
fpu__init_cpu_generic();
fpu__init_cpu_xstate(); fpu__init_cpu_xstate();
fpu__init_cpu_ctx_switch(); fpu__init_cpu_ctx_switch();
} }