FPU LWP 3/8: clean up FPU context save function

FPU: clean up FPU context save function

This patch cleans up context save function. It renames the save function to vcpu_save_fpu() because existing function name is confusion. It also extracts FPU context save code (fsave, fxsave, xsave) into separate functions. vcpu_save_fpu() will call corresponding sub-function depending on CPU's capability.

# HG changeset patch
# User Wei Huang <[email protected]>
# Date 1304448193 18000
# Node ID 0d71902c5b8fb8e6deadccf7ef7c39e05105267a # Parent cf78dad029ac3a8a9c0bf7300b275da09a94b48c
FPU: clean up FPU context save function

This patch cleans up context save function. It renames the save function to vcpu_save_fpu() because existing function name is confusion. It also extracts FPU context save code (fsave, fxsave, xsave) into seperate functions. vcpu_save_fpu() will call corresponding sub-function depending on CPU's capability.

diff -r cf78dad029ac -r 0d71902c5b8f xen/arch/x86/acpi/suspend.c
@@ -24,7 +24,7 @@
 
 void save_rest_processor_state(void)
 {
-    save_init_fpu(current);
+    vcpu_save_fpu(current);
 
 #if defined(CONFIG_X86_64)
     asm volatile (

diff -r cf78dad029ac -r 0d71902c5b8f xen/arch/x86/domain.c
@@ -1560,7 +1560,7 @@
     if ( !is_idle_vcpu(p) )
     {
         memcpy(&p->arch.user_regs, stack_regs, CTXT_SWITCH_STACK_BYTES);
-        save_init_fpu(p);
+        vcpu_save_fpu(p);
         p->arch.ctxt_switch_from(p);
     }
 

diff -r cf78dad029ac -r 0d71902c5b8f xen/include/asm-x86/i387.h
@@ -15,7 +15,7 @@
 #include <xen/percpu.h>
 
 void setup_fpu(struct vcpu *v);
-void save_init_fpu(struct vcpu *v);
+void vcpu_save_fpu(struct vcpu *v);
 
 int vcpu_init_fpu(struct vcpu *v);
 void vcpu_destroy_fpu(struct vcpu *v);

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