On Fri, 22 Jan 2021 01:37:14 -0300 Thiago Jung Bauermann <bauerman@xxxxxxxxxxxxx> wrote: > Mike Rapoport <rppt@xxxxxxxxxx> writes: > > > > Signed-off-by: Roman Gushchin <guro@xxxxxx> > > > > Reviewed-by: Mike Rapoport <rppt@xxxxxxxxxxxxx> > > 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@xxxxxxxxxxxxx/ > > Since this patch solves that problem, is it possible to include it in the next > feasible v5.11-rcX, with the following tag? We could do this, if we're confident that this patch doesn't depend on [1/2] "mm: cma: allocate cma areas bottom-up"? I think it is... > Fixes: 8fabc623238e ("powerpc: Ensure that swiotlb buffer is allocated from low memory") I added that.
