The change has been undone in r301275 on the assumption that it was no
longer required. But that was incorrect, because in this case (and only
in this case) the snapshot root vnode is looked up before z_parent is
fixed up.
MFC after: 5 days
This avoids bunch of unnecessary checks on hot path and simplifies the
channel processing.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7085
This paves way to nuke the hv_device, which is actually an unncessary
indirection.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7033
This paves way to nuke the hv_device, which is actually an unncessary
indirection.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7032
This paves way to nuke the hv_device, which is actually an unncessary
indirection.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7028
This paves way to nuke the hv_device, which is actually an unncessary
indirection.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7027
This makes life easier during the transition period to nuke the hv_device.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7026
This prepares to remove the unnecessary offer message embedding in
hv_vmbus_channel.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7020
This prepares to remove the unnecessary offer message embedding in
hv_vmbus_channel.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7019
This prepares to remove the unnecessary offer message embedding in
hv_vmbus_channel.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7015
This prepares to remove the unnecessary offer message embedding in
hv_vmbus_channel.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7014
cause a crash.
Because dummynet calls pie_cleanup() while holding a mutex, pie_cleanup()
is not able to use callout_drain() to make sure that all callouts are
finished before it returns, and callout_stop() is not sufficient to make
that guarantee. After pie_cleanup() returns, dummynet will free a
structure that any remaining callouts will want to access.
Fix these problems by allocating a separate structure to contain the
data used by the callouts. In pie_cleanup(), call callout_reset_sbt()
to replace the normal callout with a cleanup callout that does the cleanup
work for each sub-queue. The instance of the cleanup callout that
destroys the last flow will also free the extra allocated block of memory.
Protect the reference count manipulation in the cleanup callout with
DN_BH_WLOCK() to be consistent with all of the other usage of the reference
count where this lock is held by the dummynet code.
Submitted by: Rasool Al-Saadi <ralsaadi@swin.edu.au>
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D7174
If the hypervisor version is smaller than 4.6.0. Xen commits 74fd00 and
70a3cb are required on the hypervisor side for this to be fixed, and those
are only included in 4.6.0, so stay on the safe side and disable MSI-X
interrupt migration on anything older than 4.6.0.
It should not cause major performance degradation unless a lot of MSI-X
interrupts are allocated.
Sponsored by: Citrix Systems R&D
MFC after: 3 days
Reviewed by: jhb
Differential revision: https://reviews.freebsd.org/D7148
For multi-channel devices, once the primary channel is closed,
a set of 'rescind' messages for sub-channels will be delivered
by Hypervisor. Sub-channel MUST be freed according to these
'rescind' messages; directly re-openning sub-channels in the
same fashion as the primary channel's re-opening does NOT work
at all.
After the primary channel is re-opened, requested # of sub-
channels will be delivered though 'channel offer' messages, and
this set of newly offered channels can be opened along side with
the primary channel.
This unbreaks the MTU setting for hn(4), which requires re-
openning all existsing channels upon MTU change.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6978
Instead of global variable, vmbus version is accessed through
a vmbus DEVMETHOD now.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6953
