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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Sep 26, 2023 at 09:05:08PM +0200, Janne Grunau wrote: > > +static int apple_dart_attach_dev_blocked(struct iommu_domain *domain, > > + struct device *dev) > > +{ > > + struct apple_dart_master_cfg *cfg = dev_iommu_priv_get(dev); > > + struct apple_dart_stream_map *stream_map; > > + int i; > > + > > + if (cfg->stream_maps[0].dart->force_bypass) > > + return -EINVAL; > > unrelated to this change as this keeps the current behavior but I think > force_bypass should not override IOMMU_DOMAIN_BLOCKED. That would be great, dart is the only driver that can fail blocked.. > It is set if the CPU page size is smaller than dart's page > size. Obviously dart can't translate in that situation but it should > be still possible to block it completely. Wonderful, actually it probably shouldn't even support allocating a paging domain if it can't support PAGE_SIZE mappings? > How do we manage this? I can write a patch either to the current state > or based on this series. Let me just add a patch to this series to remove that test with your explanation, that will avoid patch ordering troubles. Thanks, Jason _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel