Commit-ID: b11316ed9ed9e453562d9f89a39d344331a3ec1d
Gitweb: http://git.kernel.org/tip/b11316ed9ed9e453562d9f89a39d344331a3ec1d
Author: Ingo Molnar <mingo@xxxxxxxxxx>
AuthorDate: Sun, 26 Apr 2015 14:32:34 +0200
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 19 May 2015 15:47:44 +0200
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@xxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/kernel/fpu/init.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c
index cf27bbe..37e8b13 100644
--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c
@@ -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();
}
--
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