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now spllo is okay

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rsc 2007-09-27 19:35:25 +00:00
parent b5dcebdbeb
commit 8c8b748a2f
1 changed files with 2 additions and 8 deletions
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10
trap.c
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@ -83,14 +83,8 @@ trap(struct trapframe *tf)
cp->pid, cp->name, tf->trapno, tf->err, cpu(), tf->eip); cp->pid, cp->name, tf->trapno, tf->err, cpu(), tf->eip);
cp->killed = 1; cp->killed = 1;
} }
// Undo splhi but do not enable interrupts. spllo();
// If you change this to spllo() you can get a
// triple fault by just typing too fast at the prompt.
// An interrupt stops us right here, and when that
// interrupt tries to return, somehow the segment
// registers are all invalid.
--cpus[cpu()].nsplhi;
// Force process exit if it has been killed and is in user space. // Force process exit if it has been killed and is in user space.
// (If it is still executing in the kernel, let it keep running // (If it is still executing in the kernel, let it keep running