PCI: vmd: Offset Client VMD MSI-X vectors

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Client VMD platforms have a software-triggered MSI-X vector 0 that will
not forward hardware-remapped MSI from the sub-device domain. This
causes an issue with VMD platforms that use AHCI behind VMD and have a
single MSI-X vector remapped to VMD vector 0. Add a VMD MSI-X vector
offset for these platforms.

Link: https://lore.kernel.org/r/20201102222223.92978-1-jonathan.derrick@intel.com
Tested-by: Jian-Hong Pan <jhp@endlessos.org>
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

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Jon Derrick 2020-11-02 15:22:23 -07:00 • committed by Lorenzo Pieralisi

parent f8394f232b

commit f6b7bb847c

1 changed files with 26 additions and 11 deletions

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drivers/pci/controller/vmd.c

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