Commit b11316ed authored Apr 26, 2015 by Ingo Molnar

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>

parent 21c4cd10

arch/x86/kernel/fpu/init.c

+9 −2

Original line number	Diff line number	Diff line
		@@ -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 cr4_mask = 0;
		@@ -163,7 +163,14 @@ void fpu__init_cpu(void)
		if (!cpu_has_fpu)
		cr0 \|= X86_CR0_EM;
		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_ctx_switch();
		}