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Re: [PATCH v2 5/6] Remove CoInstaller from INF


  • To: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
  • From: Paul Durrant <xadimgnik@xxxxxxxxx>
  • Date: Thu, 28 Sep 2023 13:39:34 +0100
  • Delivery-date: Thu, 28 Sep 2023 12:39:38 +0000
  • List-id: Developer list for the Windows PV Drivers subproject <win-pv-devel.lists.xenproject.org>

On 13/09/2023 14:45, Owen Smith wrote:
Windows 11 22H2 WHQL requires INF files pass "InfVerif /k", which highlights
several issues
- PnpLockdown=1 needs to be specified
- CoInstallers are no longer allowed

The CoInstaller has several functions that will need alternative solutions:
- The AllowUpdate mechanism is no longer possible
- The ability to block upgrades from installing on a different vendor's drivers
- The safety checks that ensure interface versionings remain compatible
- The cleanup of xenbus_monitor on uninstall.

Interface safety checks need to be handled by changes to child device bindings,
and assuming upgrade via emulated devices is safe. The unplug keys are cleared
in the INF to revert to emulated on the next boot, incase the current child
drivers rely on an interface that is no longer present (note: in this case,
child drivers will need updating).

Signed-off-by: Owen Smith <owen.smith@xxxxxxxxx>
---
  src/xenbus.inf | 18 ++++++------------
  1 file changed, 6 insertions(+), 12 deletions(-)


Acked-by: Paul Durrant <paul@xxxxxxx>




 


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