ACK/CMNT: [SRU][F][PATCH 0/2] Support VMD in Tiger Lake

Anthony Wong anthony.wong at canonical.com
Thu Apr 16 16:26:41 UTC 2020


On Thu, Apr 16, 2020 at 04:56:57PM +0800, You-Sheng Yang wrote:
> BugLink: https://bugs.launchpad.net/bugs/1855954
> 
> [Impact]
> On platforms with VMD support, block devices won't be scanned if VMD
> controller is not previously probed.
> 
> [Fix]
> Two commits from v5.5-rc1 to be backported.
> 
> [Test Case]
> On platforms with VMD support, boot with prebuilt kernel and check if
> Intel Volume Management Device appears among PCI devices:
> 
>   $ lspci | grep 'Volume Management Device'
>   0000:00:0e.0 RAID bus controller: Intel Corporation Volume Management
> Device NVMe RAID Controller
> 
> [Regression Potential]
> Low. This only enables VMD controller on platforms with such device.
> 
> Jon Derrick (2):
>   PCI: vmd: Add bus 224-255 restriction decode
>   PCI: vmd: Add device id for VMD device 8086:9A0B
> 
>  drivers/pci/controller/vmd.c | 32 ++++++++++++++++++++++++--------
>  include/linux/pci_ids.h      |  1 +
>  2 files changed, 25 insertions(+), 8 deletions(-)

Clean cherry-picks.
Acked-by: Anthony Wong <anthony.wong at canonical.com>

These patches are important for Ubuntu installation on VMD enabled
systems. Can we include them before Focal release?




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