The first patch of this patchset fixes 'feature_persistent' parameter
handling in 'blkback' to respect the frontend's persistent grants
support always. The fix makes a behavioral change, so the second patch
makes the counterpart of 'blkfront' to consistently follow the behavior
change.
Changes from v2
(https://lore.kernel.org/xen-devel/20220714224410.51147-1-sj@kernel.org/)
- Keep the behavioral change of v1
- Update blkfront's counterpart to follow the changed behavior
- Update documents for …
[View More]the changed behavior
Changes from v1
(https://lore.kernel.org/xen-devel/20220106091013.126076-1-mheyne@amazon.de/)
- Avoid the behavioral change
(https://lore.kernel.org/xen-devel/20220121102309.27802-1-sj@kernel.org/)
- Rebase on latest xen/tip/linux-next
- Re-work by SeongJae Park <sj(a)kernel.org>
- Cc stable@
Maximilian Heyne (1):
xen, blkback: fix persistent grants negotiation
SeongJae Park (1):
xen-blkfront: Apply 'feature_persistent' parameter when connect
Documentation/ABI/testing/sysfs-driver-xen-blkback | 2 +-
Documentation/ABI/testing/sysfs-driver-xen-blkfront | 2 +-
drivers/block/xen-blkback/xenbus.c | 9 +++------
drivers/block/xen-blkfront.c | 4 +---
4 files changed, 6 insertions(+), 11 deletions(-)
--
2.25.1
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Hyper-V driver has advertised support for multi-MSI, but any attempt at
using the feature would fallback to a single MSI (non-starter for
devices that require multi-MSI). The fallback also covered up other
bugs related to multi-MSI functionality rooted in the driver not being
able to tell MSIs apart.
These patches fix those bugs by enabling hv multi-MSI through IOMMU
remapping, distinguishing multi-MSIs from the initial MSI of the MSI
block, preventing retargeting of MSI subsets from …
[View More]invalidating the IRTE
block, and aiding hypervisor to preserve the block of requests.
Tested on 5.10.130
Jeffrey Hugo (4):
PCI: hv: Fix multi-MSI to allow more than one MSI vector
PCI: hv: Fix hv_arch_irq_unmask() for multi-MSI
PCI: hv: Reuse existing IRTE allocation in compose_msi_msg()
PCI: hv: Fix interrupt mapping for multi-MSI
drivers/pci/controller/pci-hyperv.c | 99 +++++++++++++++++++++--------
1 file changed, 73 insertions(+), 26 deletions(-)
--
2.25.1
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