Commit-ID: 7218e8b723dc9ceb71cf2fbd3d019e9e11b7d3cf
Gitweb: http://git.kernel.org/tip/7218e8b723dc9ceb71cf2fbd3d019e9e11b7d3cf
Author: Ingo Molnar <mingo@xxxxxxxxxx>
AuthorDate: Sun, 26 Apr 2015 14:35:54 +0200
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 19 May 2015 15:47:45 +0200
x86/fpu: Factor out fpu__init_system_generic()
Factor out the generic bits from fpu__init_system().
Rename mxcsr_feature_mask_init() to fpu__init_system_mxcsr()
to bring it in line with the rest of the nomenclature.
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 | 27 +++++++++++++++++----------
1 file changed, 17 insertions(+), 10 deletions(-)
diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c
index 37e8b13..c3f3a89 100644
--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c
@@ -72,7 +72,7 @@ unsigned int mxcsr_feature_mask __read_mostly = 0xffffffffu;
unsigned int xstate_size;
EXPORT_SYMBOL_GPL(xstate_size);
-static void mxcsr_feature_mask_init(void)
+static void fpu__init_system_mxcsr(void)
{
unsigned int mask = 0;
@@ -94,6 +94,20 @@ static void mxcsr_feature_mask_init(void)
mxcsr_feature_mask &= mask;
}
+/*
+ * Once per bootup FPU initialization sequences that will run on most x86 CPUs:
+ */
+static void fpu__init_system_generic(void)
+{
+ /*
+ * Set up the legacy init FPU context. (xstate init might overwrite this
+ * with a more modern format, if the CPU supports it.)
+ */
+ fx_finit(&init_xstate_ctx.i387);
+
+ fpu__init_system_mxcsr();
+}
+
static void fpstate_xstate_init_size(void)
{
static bool on_boot_cpu = 1;
@@ -230,18 +244,11 @@ void fpu__init_system(void)
/*
* But don't leave CR0::TS set yet, as some of the FPU setup methods depend
* on being able to execute FPU instructions that will fault on a set TS,
- * such as the FXSAVE in mxcsr_feature_mask_init().
+ * such as the FXSAVE in fpu__init_system_mxcsr().
*/
clts();
- /*
- * Set up the legacy init FPU context. (xstate init might overwrite this
- * with a more modern format, if the CPU supports it.)
- */
- fx_finit(&init_xstate_ctx.i387);
-
- mxcsr_feature_mask_init();
-
+ fpu__init_system_generic();
fpstate_xstate_init_size();
fpu__init_system_xstate();
--
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