From 49f182e6be8d3e48d6a79ffd2b567f70c4c86e9a Mon Sep 17 00:00:00 2001 From: Alexey Kardashevskiy Date: Fri, 28 Sep 2018 16:45:39 +1000 Subject: [PATCH] powerpc/powernv/ioda: Allocate indirect TCE levels of cached userspace addresses on demand [ Upstream commit bdbf649efe21173cae63b4b71db84176420f9039 ] The powernv platform maintains 2 TCE tables for VFIO - a hardware TCE table and a table with userspace addresses; the latter is used for marking pages dirty when corresponging TCEs are unmapped from the hardware table. a68bd1267b72 ("powerpc/powernv/ioda: Allocate indirect TCE levels on demand") enabled on-demand allocation of the hardware table, however it missed the other table so it has still been fully allocated at the boot time. This fixes the issue by allocating a single level, just like we do for the hardware table. Fixes: a68bd1267b72 ("powerpc/powernv/ioda: Allocate indirect TCE levels on demand") Signed-off-by: Alexey Kardashevskiy Reviewed-by: David Gibson Signed-off-by: Michael Ellerman Signed-off-by: Sasha Levin --- arch/powerpc/platforms/powernv/pci-ioda-tce.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/powernv/pci-ioda-tce.c b/arch/powerpc/platforms/powernv/pci-ioda-tce.c index fe96910..7639b21 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda-tce.c +++ b/arch/powerpc/platforms/powernv/pci-ioda-tce.c @@ -299,7 +299,7 @@ long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset, if (alloc_userspace_copy) { offset = 0; uas = pnv_pci_ioda2_table_do_alloc_pages(nid, level_shift, - levels, tce_table_size, &offset, + tmplevels, tce_table_size, &offset, &total_allocated_uas); if (!uas) goto free_tces_exit; -- 2.7.4