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Index: head/sys/powerpc/powerpc/exec_machdep.c
===================================================================
--- head/sys/powerpc/powerpc/exec_machdep.c
+++ head/sys/powerpc/powerpc/exec_machdep.c
@@ -474,6 +474,10 @@
else
tf->fixreg[2] = tls;
+ /* Disable FPU */
+ tf->srr1 &= ~PSL_FP;
+ pcb->pcb_flags &= ~PCB_FPU;
+
if (mcp->mc_flags & _MC_FP_VALID) {
/* enable_fpu() will happen lazily on a fault */
pcb->pcb_flags |= PCB_FPREGS;

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