Marek Marczykowski-Górecki 90e8b74931 xen-pciback: Consider INTx disabled when MSI/MSI-X is enabled ... [ Upstream commit 2c269f42d0 ] Linux enables MSI-X before disabling INTx, but keeps MSI-X masked until the table is filled. Then it disables INTx just before clearing MASKALL bit. Currently this approach is rejected by xen-pciback. According to the PCIe spec, device cannot use INTx when MSI/MSI-X is enabled (in other words: enabling MSI/MSI-X implicitly disables INTx). Change the logic to consider INTx disabled if MSI/MSI-X is enabled. This applies to three places: - checking currently enabled interrupts type, - transition to MSI/MSI-X - where INTx would be implicitly disabled, - clearing INTx disable bit - which can be allowed even if MSI/MSI-X is enabled, as device should consider INTx disabled anyway in that case Fixes: 5e29500eba ("xen-pciback: Allow setting PCI_MSIX_FLAGS_MASKALL too") Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com> Acked-by: Juergen Gross <jgross@suse.com> Link: https://lore.kernel.org/r/20231016131348.1734721-1-marmarek@invisiblethingslab.com Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-11-20 11:59:12 +01:00
..
conf_space_capability.c	xen-pciback: Consider INTx disabled when MSI/MSI-X is enabled	2023-11-20 11:59:12 +01:00
conf_space_header.c	xen-pciback: Consider INTx disabled when MSI/MSI-X is enabled	2023-11-20 11:59:12 +01:00
conf_space_quirks.c
conf_space_quirks.h	xen-pciback: Remove unused function declarations	2023-08-21 09:53:22 +02:00
conf_space.c	xen-pciback: Consider INTx disabled when MSI/MSI-X is enabled	2023-11-20 11:59:12 +01:00
conf_space.h
Makefile
passthrough.c
pci_stub.c	xen/pciback: don't call pcistub_device_put() under lock	2023-04-24 07:27:10 +02:00
pciback_ops.c
pciback.h	xen-pciback: Remove unused function declarations	2023-08-21 09:53:22 +02:00
vpci.c
xenbus.c