On Thu, 2017-04-13 at 07:05:27 UTC, Alexey Kardashevskiy wrote: > When the userspace requests a small TCE table (which takes less than > the system page size) and more than 1 TCE level, the existing code > returns a single page size which is a bug as each additional TCE level > requires at least one page and this is what > pnv_pci_ioda2_table_alloc_pages() does. And we end up seeing > WARN_ON(!ret && ((*ptbl)->it_allocated_size != table_size)) > in drivers/vfio/vfio_iommu_spapr_tce.c. > > This replaces incorrect _ALIGN_UP() (which aligns zero up to zero) with > max_t() to fix the bug. > > Besides removing WARN_ON(), there should be no other changes in > behaviour. > > Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/e49a6a2173346d316c0e65d054a3cd cheers
