On Thu, 2016-12-05 at 05:47:09 UTC, Alexey Kardashevskiy wrote: > The pnv_pci_init_ioda_phb() helper allocates a blob to store auxilary > data such PE and M32/M64 segment allocation maps; this single blob has few > partitions, size of each is derived from the PE number - > phb->ioda.total_pe_num. > > It was assumed that the minimum PE number is 8, however it is 4 for NPU > so the pe_alloc part was missing in the allocated blob. > It was invisible till recently as we were not tracking used M64 segments > and NPUs do not use M32 segments so the phb->ioda.m32_segmap > (which was pointing to the same address as phb->ioda.pe_alloc) > has never been written to leaving the pe_alloc memory intact. > > After 401203ac2d "powerpc/powernv: Track M64 segment consumption" > the pe_alloc gets corrupted and PE allocation cannot work. > This fixes the issue by enforcing the minimum PE number to 8. > > Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru> > Reviewed-by: Gavin Shan <gws...@linux.vnet.ibm.com>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/92a86756904b127a3450262b33 cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
