Messages in this thread | | | From | Thiago Jung Bauermann <> | Subject | Re: [PATCH v2 2/2] memblock: do not start bottom-up allocations with kernel_end | Date | Fri, 22 Jan 2021 01:37:14 -0300 |
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Mike Rapoport <rppt@kernel.org> writes:
> > Signed-off-by: Roman Gushchin <guro@fb.com> > > Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
I've seen a couple of spurious triggers of the WARN_ONCE() removed by this patch. This happens on some ppc64le bare metal (powernv) server machines with CONFIG_SWIOTLB=y and crashkernel=4G, as described in a candidate patch I posted to solve this issue in a different way:
https://lore.kernel.org/linuxppc-dev/20201218062103.76102-1-bauerman@linux.ibm.com/
Since this patch solves that problem, is it possible to include it in the next feasible v5.11-rcX, with the following tag?
Fixes: 8fabc623238e ("powerpc: Ensure that swiotlb buffer is allocated from low memory")
This is because reverting the commit above also solves the problem on the machines where I've seen this issue.
-- Thiago Jung Bauermann IBM Linux Technology Center
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