ionic: advertise 52-bit addressing limitation for MSI-X

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Current ionic devices only support 52 internal physical address
lines. This is sufficient for x86_64 systems which have similar
limitations but does not apply to all other architectures,
notably IBM POWER (ppc64). To ensure that MSI/MSI-X vectors are
not set outside the physical address limits of the NIC, set the
no_64bit_msi value of the pci_dev structure during device probe.

Signed-off-by: David Christensen <drc@linux.ibm.com>
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Link: https://lore.kernel.org/r/20240603212747.1079134-1-drc@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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David Christensen 2024-06-03 17:27:41 -04:00 • committed by Jakub Kicinski

parent c790275b5e

commit 1467713eb2

1 changed files with 5 additions and 0 deletions

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drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c

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