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 <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Fenghua Yu <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
---
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 cf27bbed1ba1..37e8b139dc31 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();
}
--
2.1.0
--
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