Merge branch 'x86-xsave-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-xsave-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, xsave: Make xstate_enable_boot_cpu() __init, protect on CPU 0
  x86, xsave: Add __init attribute to setup_xstate_features()
  x86, xsave: Make init_xstate_buf static
  x86, xsave: Check cpuid level for XSTATE_CPUID (0x0d)
  x86, xsave: Introduce xstate enable functions
  x86, xsave: Separate fpu and xsave initialization
  x86, xsave: Move boot cpu initialization to xsave_init()
  x86, xsave: 32/64 bit boot cpu check unification in initialization
  x86, xsave: Do not include asm/i387.h in asm/xsave.h
  x86, xsave: Use xsaveopt in context-switch path when supported
  x86, xsave: Sync xsave memory layout with its header for user handling
  x86, xsave: Track the offset, size of state in the xsave layout

1 files changed, 10 insertions, 6 deletions

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index f10273138382..490dac63c2d2 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -140,10 +140,18 @@ EXPORT_PER_CPU_SYMBOL_GPL(gdt_page);
 static int __init x86_xsave_setup(char *s)
 {
         setup_clear_cpu_cap(X86_FEATURE_XSAVE);
+        setup_clear_cpu_cap(X86_FEATURE_XSAVEOPT);
         return 1;
 }
 __setup("noxsave", x86_xsave_setup);
 
+static int __init x86_xsaveopt_setup(char *s)
+{
+        setup_clear_cpu_cap(X86_FEATURE_XSAVEOPT);
+        return 1;
+}
+__setup("noxsaveopt", x86_xsaveopt_setup);
+
 #ifdef CONFIG_X86_32
 static int cachesize_override __cpuinitdata = -1;
 static int disable_x86_serial_nr __cpuinitdata = 1;
@@ -1202,6 +1210,7 @@ void __cpuinit cpu_init(void)
         dbg_restore_debug_regs();
 
         fpu_init();
+        xsave_init();
 
         raw_local_save_flags(kernel_eflags);
 
@@ -1262,12 +1271,7 @@ void __cpuinit cpu_init(void)
         clear_used_math();
         mxcsr_feature_mask_init();
 
-        /*
-         * Boot processor to setup the FP and extended state context info.
-         */
-        if (smp_processor_id() == boot_cpu_id)
-                init_thread_xstate();
-
+        fpu_init();
         xsave_init();
 }
 #endif