Commit-ID: 067051ccd209623cb56152cf4cb06616ee2bcc5c
Gitweb: http://git.kernel.org/tip/067051ccd209623cb56152cf4cb06616ee2bcc5c
Author: Ingo Molnar <mingo@xxxxxxxxxx>
AuthorDate: Sat, 25 Apr 2015 08:27:44 +0200
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 19 May 2015 15:47:43 +0200
x86/fpu: Do system-wide setup from fpu__detect()
fpu__cpu_init() is called on every CPU, so it is the wrong place
to call fpu__init_system() from. Call it from fpu__detect():
this is early CPU init code, but we already have CPU features detected,
so we can call the system-wide FPU init code from here.
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 | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c
index b3ea4f8..6e422cf 100644
--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c
@@ -245,7 +245,6 @@ void fpu__init_system(void)
void fpu__cpu_init(void)
{
fpu__init_cpu();
- fpu__init_system();
}
static int __init no_387(char *s)
@@ -279,5 +278,6 @@ void fpu__detect(struct cpuinfo_x86 *c)
else
clear_cpu_cap(c, X86_FEATURE_FPU);
+ fpu__init_system();
/* The final cr0 value is set later, in fpu_init() */
}
--
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