On 2/9/26 7:45 PM, Casey Connolly wrote:
Hello Casey,
Which means, before we can really start switching boards to relocate to
64bit space, we need to find all these remaining 32bit limitation sites
and fix them first. And to do that, we would need some way to force
allocation from 32bit space for drivers which need that ... do we
already have such a thing ? I couldn't find anything.
For some (non-upstream) Qualcomm drivers we have just used lmb with
LMB_ALLOC_MAX and passed in 4GB as the max address, it would be nice to
have a wrapper function for this.
Maybe this would just cause a whole bunch of other issues but perhaps it
would be easiest to have a config option to place the malloc arena in
32-bit memory rather than always directly below U-Boot? Then again I
imagine this is something that has been bikeshed in the past...
Are those qualcomm devices suffering from 32bit DMA limitation too ?
*casey grumbles something about making relocation optional and merging
the f/r init sequences for most boards*
Can you try CONFIG_SKIP_RELOCATE for your use case ?
