Reduce calls to BlockRingPush and NotifierSend during PdoSubmitPrepared
Remove ListContains assertions

Signed-off-by: Owen Smith <owen.smith@citrix.com>

No need to lock when accessing private front ring.
Move lock to insertion pathway only.

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Tidy up code with Granter/Notifier/BlockRing accessors

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Remove unneeded include

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Enable single requests to be submitted to the ring

When a SRB has been prepared, its constituent requests are appended
to a request queue. Requests are submitted to the ring from this request
queue, allowing a SRB to be partially submitted due to limited free
slots on the ring.

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Merge pull request #8 from OwenSmith/master

[SCTX-1663] Allow Closed -> Initialized state transition

[SCTX-1663] Make Closed->Initialized a valid transition.
Resuming from suspend, when the suspend occured before the
Initialized->Closed transition is valid, and the state needs to change
to allow subsiquent resumes to close the backend connection.

Signed-off-by: Owen Smith <owen.smith@citrix.com>

[SCTX-1663] Prevent transitions to Initialized causing DEAD BSOD
on resume from suspend, when suspend occurs before transition out
of Initialized.

Also, fix minor typo in xencrsh/pdo.c

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Add more logging to xencrsh

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Merge pull request #7 from OwenSmith/switch-xencrsh-to-grant-v1

Switch xencrsh to grant v1

Fix comments on prev commit
* #define MAXIMUM_GRANT_PAGES 1
* KeMemoryBarrier()

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Switch XENCRSH to grant v1

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Add back missing code to handle VDISK_REMOVABLE

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Merge pull request #4 from OwenSmith/upstream

Remove KeFlushQueuedDpcs on disable

Approved-By: Ben Chalmers <ben.chalmers@citrix.com>

Merge branch 'upstream' of github.com:OwenSmith/win-xenvbd into upstream

Remove KeFlushQueuedDpcs on disable

The DPC checks for state before doing anything, allowing
a DPC to run (and exit immidiately) should be safe.

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Merge branch 'upstream' of github.com:OwenSmith/win-xenvbd into upstream

Merge pull request #3 from benchalmers/upstream-ca-118809

[CA-118809] Use 64 bit abi
Approved By : owen.smith@citrix.com

[CA-118809] Use 64 bit abi

Signed-off-by: Ben Chalmers <Ben.Chalmers@citrix.com>

Fix typos

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Fix typo

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

New README.md and INSTALL.md.

Also fix some python/cygwin issues and imported header line endings.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

ZwSetValueKey() was being called at DISPATCH_LEVEL from within the
enumeration code.

Change the code structure to only play with the registry from the outer
scan function which runs at PASSIVE_LEVEL.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Update build to reflect version

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Update to 7.2.0

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

MSVC apparently 8-byte aligns 8-byte objects even in 32-bit builds
so we need to use the 64-bit ABI to blkback/tap in all cases.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Add a DWORD value "NeedReboot" to the service key if a PDO fails
to start because either the EMULATED interface is not available, or
an alias has yet to be unplugged.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Advertize the correct ABI to the backend when connecting.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Merge branch 'upstream' of github.com:pauldu/win-xenvbd into upstream

Update to new GNTTAB interface

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Switch to Xen 3.4 headers for backwards compatibility

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Make the unplug DISKS value a REG_MULTI_SZ instead of a REG_SZ

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Add a .gitignore

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Remove some build noise

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Make the unplug DISKS value a REG_MULTI_SZ instead of a REG_SZ

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Add a .gitignore

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Zero FDO entries on terminate to avoid ASSERT(IsZeroMemory) firing inappropriately

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Remove some build noise

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

Update coinstaller to write xenfilt/unplug/disks and xenvbd/count

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Invert Emulated logic to improve clarity
EmulatedMasked becomes EmulatedUnplugged
(i.e. if emulated target is unplugged, the target should be PV)

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Move GNTTAB functionality to Granter.c

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Move blkif ring interface to BlockRing.c

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Move EVTCHN to Notifier.c

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Refactor frontend.c to reduce excessive inlined functions

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Consolidate srbext.h and ring.h

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Use include path rather than relative paths

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Update interfaces to win-xenbus/upstream
Rework __FdoIsPdoMasked to use the new interface

Signed-off-by: Owen Smith <owen.smith@citrix.com>

INF Changes (inc bindings)
* Version stamp coinstaller
* Update bindings to match win-xenbus/upstream
* Use XenServer branding

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Switch to test signing.
New xenvbd.pfx (no password) added to repo.

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Merge pull request #2 from OwenSmith/master

Update minor number

 Update the minor number.

When the repo was moved from mercurial to git the build system started
build numbers from #1 again. Bump the minor version number to avoid
confusion between these new builds and old builds of the original repo.

Signed-off-by: Owen Smith <owen.smith@citrix.com>

Merge pull request #1 from OwenSmith/master

Prevent C4 BSOD when Verifier is active (deadlock detection)

[CA-109634] Dont take state lock during suspend handler, as suspend code holds a lock

Sync with existing internal repo

changeset:   361:23c93d17c84b
tag:         tip
user:        Ben Chalmers <ben.chalmers@citrix.com>
date:        Wed Jun 19 11:07:54 2013 +0100
summary:     [CP-4195] Add README.md and associated files to xenvbd

changeset:   360:2d8c4bc19378
user:        Ben Chalmers <ben.chalmers@citrix.com>
date:        Wed Jun 19 11:03:47 2013 +0100
summary:     [CP-4195] Add README.md and associated files to xenvbd

changeset:   359:1d245f4d9b8f
user:        Owen Smith <owen.smith@citrix.com>
date:        Wed Jun 12 16:06:05 2013 +0100
summary:     Update vcxproj files to correctly build for targetting Vista

changeset:   358:dbca6328e21b
user:        Owen Smith <owen.smith@citrix.com>
date:        Tue Jun 11 10:50:43 2013 +0100
summary:     Update sdv script and use <> includes

changeset:   357:888e41763048
user:        Owen Smith <owen.smith@citrix.com>
date:        Fri May 31 15:32:20 2013 +0100
summary:     Update projects to build and run sdv

changeset:   356:ae01c618cdd1
user:        Owen Smith <owen.smith@citrix.com>
date:        Fri May 31 09:44:52 2013 +0100
summary:     CA-86240 - use common updated script files

changeset:   355:a51b6771ba94
user:        Ben Chalmers <ben.chalmers@citrix.com>
date:        Wed May 29 16:47:37 2013 +0100
summary:     [CP-4689] Add BSD licence header to inf files

[CP-4699] Modify build.py to cope with jenkins git plugin

Fix scripts for git

[CP-4696] Git repository created for xenvbd