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| author | Sandor Bodo-Merle <sbodomerle@gmail.com> | 2021-06-22 18:26:30 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-20 17:05:52 +0300 |
| commit | 607caa080119f4972949fe313481c12b3a50fbbf (patch) | |
| tree | fc6b2a9e1879474b48045c4c17e7f77c022b64ce /Documentation/filesystems | |
| parent | 54dc6fcce3de6c6efa9a3dfb1e5fb3a0d68df459 (diff) | |
| download | linux-607caa080119f4972949fe313481c12b3a50fbbf.tar.xz | |
PCI: iproc: Support multi-MSI only on uniprocessor kernel
[ Upstream commit 2dc0a201d0f59e6818ef443609f0850a32910844 ]
The interrupt affinity scheme used by this driver is incompatible with
multi-MSI as it implies moving the doorbell address to that of another MSI
group. This isn't possible for multi-MSI, as all the MSIs must have the
same doorbell address. As such it is restricted to systems with a single
CPU.
Link: https://lore.kernel.org/r/20210622152630.40842-2-sbodomerle@gmail.com
Fixes: fc54bae28818 ("PCI: iproc: Allow allocation of multiple MSIs")
Reported-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sandor Bodo-Merle <sbodomerle@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Acked-by: Pali Rohár <pali@kernel.org>
Acked-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'Documentation/filesystems')
0 files changed, 0 insertions, 0 deletions