PCI/MSI: Check the device specific address mask in msi_verify_entries()

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Instead of a 32-bit/64-bit dichotomy, check the MSI address against
the device specific address mask.

This allows platforms with an MSI doorbell address above the 32-bit limit
to work with devices without full 64-bit MSI address support, as long as
the doorbell is within the addressable range of the device.

[ tglx: Massaged changelog ]

Signed-off-by: Vivian Wang <wangruikang@iscas.ac.cn>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260129-pci-msi-addr-mask-v4-2-70da998f2750@iscas.ac.cn

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Vivian Wang 2026-01-29 09:56:07 +08:00 • committed by Thomas Gleixner

parent 386ced19e9

commit 52f0d862f5

1 changed files with 5 additions and 3 deletions

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8

drivers/pci/msi/msi.c

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