https://github.com/torvalds/linux
Revision 335b4223466dd75f9f3ea4918187afbadd22e5c8 authored by Maximilian Heyne on 03 May 2023, 13:16:53 UTC, committed by Juergen Gross on 24 May 2023, 16:08:49 UTC
Commit bf5e758f02fc ("genirq/msi: Simplify sysfs handling") reworked the
creation of sysfs entries for MSI IRQs. The creation used to be in
msi_domain_alloc_irqs_descs_locked after calling ops->domain_alloc_irqs.
Then it moved into __msi_domain_alloc_irqs which is an implementation of
domain_alloc_irqs. However, Xen comes with the only other implementation
of domain_alloc_irqs and hence doesn't run the sysfs population code
anymore.

Commit 6c796996ee70 ("x86/pci/xen: Fixup fallout from the PCI/MSI
overhaul") set the flag MSI_FLAG_DEV_SYSFS for the xen msi_domain_info
but that doesn't actually have an effect because Xen uses it's own
domain_alloc_irqs implementation.

Fix this by making use of the fallback functions for sysfs population.

Fixes: bf5e758f02fc ("genirq/msi: Simplify sysfs handling")
Signed-off-by: Maximilian Heyne <mheyne@amazon.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20230503131656.15928-1-mheyne@amazon.de
Signed-off-by: Juergen Gross <jgross@suse.com>
1 parent 8fafac2
History
Tip revision: 335b4223466dd75f9f3ea4918187afbadd22e5c8 authored by Maximilian Heyne on 03 May 2023, 13:16:53 UTC
x86/pci/xen: populate MSI sysfs entries
Tip revision: 335b422
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