ATA driver races with interrupts
will+freebsd-current at will.iki.fi
Tue Aug 3 03:31:04 PDT 2004
Søren Schmidt wrote:
> Reliable solutions needs reliable HW, we can narrow down the race
> window here, but without HW support we cannot close it completely
> unless we serialises access to the channels (what lots of OS's does
For now, I moved my SATA disks to the Promise controller, which seems to
work with an unpatched -current.
If serialization is the only reliable solution, shouldn't it be enabled
for all controllers with multiple channels on the same irq that use
ata_generic_intr? It isn't going to hurt performance when only using
one channel, and when using multiple channels...currently it's pretty
much guaranteed to blow up.
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