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author | rtm <rtm> | 2006-06-13 22:08:20 +0000 |
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committer | rtm <rtm> | 2006-06-13 22:08:20 +0000 |
commit | cb83c71628378bc0e295dd71bf6641379fbcdf37 (patch) | |
tree | dfad6b06b7cb267bfe587e975e8f30e7427d21db /Notes | |
parent | 84eb544b23b17fed07b8c33142d48fdceffce10c (diff) | |
download | xv6-labs-cb83c71628378bc0e295dd71bf6641379fbcdf37.tar.gz xv6-labs-cb83c71628378bc0e295dd71bf6641379fbcdf37.tar.bz2 xv6-labs-cb83c71628378bc0e295dd71bf6641379fbcdf37.zip |
fix some trap bugs
Diffstat (limited to 'Notes')
-rw-r--r-- | Notes | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -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. |