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# ChangeSet
# We need to clear all exceptions before synchronizing# with the FPU, since we aren't ready to handle a FP# exception here and we're getting rid of all FP state.
# Special thanks to Alexander Nyberg for reports and# testing. Alternate patches by Sergey Vlasov and Andi# Kleen, who both worked on this.
# Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff -Nru a/include/asm-i386/i387.h b/include/asm-i386/i387.h
--- a/include/asm-i386/i387.h 2004-06-15 08:57:43 -07:00
+++ b/include/asm-i386/i387.h 2004-06-15 08:57:43 -07:00
@@ -34,7 +34,7 @@
#define clear_fpu( tsk ) do { \ if ( tsk->flags & PF_USEDFPU ) { \- asm volatile("fwait"); \
+ asm volatile("fnclex ; fwait"); \
tsk->flags &= ~PF_USEDFPU; \ stts(); \ } \diff -Naur a/include/asm-x86_64/i387.h b/include/asm-x86_64/i387.h
--- a/include/asm-x86_64/i387.h 2003-08-25 13:44:44.000000000 +0200
+++ b/include/asm-x86_64/i387.h 2004-06-13 05:27:55.000000000 +0200
@@ -34,7 +34,7 @@
#define clear_fpu( tsk ) do { \ if ( tsk->flags & PF_USEDFPU ) { \- asm volatile("fwait"); \
+ asm volatile("fnclex ; fwait"); \
tsk->flags &= ~PF_USEDFPU; \ stts(); \ } \
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