Imbus/xv6-riscv-kernel
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fix some trap bugs

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rtm 2006-06-13 22:08:20 +00:00
parent 84eb544b23
commit cb83c71628
4 changed files with 26 additions and 6 deletions
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@ -73,3 +73,9 @@ setupsegs() may modify current segment table, is that legal?
trap() ought to lgdt on return, since currently only done in swtch()
protect hardware interrupt vectors from user INT instructions?
i'm getting a curious interrupt when jumping into user space. maybe
it's IRQ 0, but it comes at a weird and changing vector (e.g. 119) if
you don't initialize the PIC. why doesn't jos see this? if i
initialize the PIC with IRQ_OFFSET 32, the interrupt arrives at vector
32.