bugs. It appears to be quite difficult to identify the exact Qemu version
and setup. These do not fail on the TNF's qemu/amd64 setup, which can be
taken as a reference point for expected failures.
- make sure that -v does not change the program behavior
- don't set revents in poll
- add more debugging
- only call read when we have POLLIN
- don't mix I/O from master while processing input
listens on drvctl for new devices and invokes MAKEDEV for them.
missing:
- manual page
- rc.d script
- more testing
but it works well enough to make new disk nodes appear in /dev when
netbsd sees them and they're missing. you will need to make sure
you have a new /dev/MAKEDEV for this to work properly (postinstall
should handle this normally, of course.)
thanks jared!
This is required to avoid data corruption bugs, where a getattr slices
itself within a setattr operation, and sets the size to the stall value
it got from the filesystem. That value is smaller than the one set by
setattr, and the call to uvm_vnp_setsize() trigged a spurious truncate.
The result is a chunk of zeroed data in the file.
Such a situation can easily happen when the ioflush thread issue a
VOP_FSYNC/puffs_vnop_sync/flushvncache/dosetattrn while andother process
do a sys_stat/VOP_GETATTR/puffs_vnop_getattr.
This mutex on size operation can be removed the day we decide VOP_GETATTR
has to operated on a locked vnode, since the other operations that touch
size already require that.
(virq_timer_to_evtch, indexed by cpuid) different from the
VIRQ <> event channel one (virq_to_evtch, indexed by event channel ID).
This is fine: fix a "harmless" bug that resulted in the event
channel of VIRQ_TIMER getting lost during bind as it was not stored
in the proper array.
"Harmless" because it is not critical for -current, however in the Xen
save/restore branch this completely cripples restore. Xen clock gets
suspended, but never comes back (fetched channel ID being invalid). Oops.
Add a small comment so we can better see the "get => allocate? => set"
chain of actions when binding/unbinding event channels.
