Re: Internal error: Oops: 0000000096000044 [#11] SMP

[Dan Williams <dan.j.williams@intel.com>]

Itaru Kitayama wrote:
> Dave et al.,
[..]
> Rebuilt the rootfs image and tried today’s cx/next
> (6.15.0-rc4-00046-g6eed708a5693) again to boot now I don’t see the
> splats, so something I was messing my dev environment sorry about
> that.
> 
> CXL utility commands work reasonably now and I can execute meson test
> —suite cxl, while most of them still fails due to the HPA allocation
> error which makes me wonder as the resource requests are quite modest. 

So cxl_test_init() just "hopes" that the top of the system physical
address space is free to use to emulate CXL windows. That might be an
assumption that only works for x86_64, not ARM64. I would double check
that this code in cxl_test_init()

        rc = gen_pool_add(cxl_mock_pool, iomem_resource.end + 1 - SZ_64G,
                          SZ_64G, NUMA_NO_NODE);
        if (rc)
                goto err_gen_pool_add;

...is not setting up CXL Windows that overlap with existing resources in
that range.