FPU LWP 4/8: clean up FPU context restore function

PATCH New Wei Huang 1 participant 1 message May 3, 2011

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Wei Huang

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2011-05-03 20:17 UTC #0 lore raw

PATCH 1/1 FPU LWP 4/8: clean up FPU context restore function

FPU: clean up FPU context restore function

This patch cleans up context restore function. It renames the function name to vcpu_restore_fpu(). It also extracts FPU restore code (frstor, fxrstor, xrstor) out into seperate functions. vcpu_restor_fpu() will dispatch to these functions depending on CPU's capability.

Signed-off-by Wei Huang <[email protected]>

# HG changeset patch
# User Wei Huang <[email protected]>
# Date 1304448326 18000
# Node ID 63208cfe3c558cebc5149fc569702785f6d8e73b # Parent 0d71902c5b8fb8e6deadccf7ef7c39e05105267a
FPU: clean up FPU context restore function

Signed-off-by Wei Huang <[email protected]>

xen/arch/x86/hvm/svm/svm.c +1 -1

diff -r 0d71902c5b8f -r 63208cfe3c55 xen/arch/x86/hvm/svm/svm.c
@@ -348,7 +348,7 @@
 {
     struct vmcb_struct *vmcb = v->arch.hvm_svm.vmcb;
 
-    setup_fpu(v);
+    vcpu_restore_fpu(v);
     vmcb_set_exception_intercepts(
         vmcb, vmcb_get_exception_intercepts(vmcb) & ~(1U << TRAP_no_device));
 }

xen/arch/x86/hvm/vmx/vmx.c +1 -1

diff -r 0d71902c5b8f -r 63208cfe3c55 xen/arch/x86/hvm/vmx/vmx.c
@@ -612,7 +612,7 @@
 
 static void vmx_fpu_enter(struct vcpu *v)
 {
-    setup_fpu(v);
+    vcpu_restore_fpu(v);
     v->arch.hvm_vmx.exception_bitmap &= ~(1u << TRAP_no_device);
     vmx_update_exception_bitmap(v);
     v->arch.hvm_vmx.host_cr0 &= ~X86_CR0_TS;

xen/arch/x86/i387.c +85 ~~-74~~

188 lines not on this page · raw message

xen/arch/x86/traps.c +1 -1

diff -r 0d71902c5b8f -r 63208cfe3c55 xen/arch/x86/traps.c
@@ -3198,7 +3198,7 @@
 
     BUG_ON(!guest_mode(regs));
 
-    setup_fpu(curr);
+    vcpu_restore_fpu(curr);
 
     if ( curr->arch.pv_vcpu.ctrlreg[0] & X86_CR0_TS )
     {

xen/include/asm-x86/i387.h +1 -1

diff -r 0d71902c5b8f -r 63208cfe3c55 xen/include/asm-x86/i387.h
@@ -14,7 +14,7 @@
 #include <xen/types.h>
 #include <xen/percpu.h>
 
-void setup_fpu(struct vcpu *v);
+void vcpu_restore_fpu(struct vcpu *v);
 void vcpu_save_fpu(struct vcpu *v);
 
 int vcpu_init_fpu(struct vcpu *v);

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