This is a note to let you know that I've just added the patch titled selftests/powerpc: Make using_hash_mmu() work on Cell & PowerMac to the 5.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: selftests-powerpc-make-using_hash_mmu-work-on-cell-p.patch and it can be found in the queue-5.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 77ee8b3a971505d4266484e97b6a54db623a0446 Author: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Date: Wed Aug 19 11:57:19 2020 +1000 selftests/powerpc: Make using_hash_mmu() work on Cell & PowerMac [ Upstream commit 34c103342be3f9397e656da7c5cc86e97b91f514 ] These platforms don't show the MMU in /proc/cpuinfo, but they always use hash, so teach using_hash_mmu() that. Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20200819015727.1977134-1-mpe@xxxxxxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/tools/testing/selftests/powerpc/utils.c b/tools/testing/selftests/powerpc/utils.c index 18b6a773d5c73..638ffacc90aa1 100644 --- a/tools/testing/selftests/powerpc/utils.c +++ b/tools/testing/selftests/powerpc/utils.c @@ -318,7 +318,9 @@ int using_hash_mmu(bool *using_hash) rc = 0; while (fgets(line, sizeof(line), f) != NULL) { - if (strcmp(line, "MMU : Hash\n") == 0) { + if (!strcmp(line, "MMU : Hash\n") || + !strcmp(line, "platform : Cell\n") || + !strcmp(line, "platform : PowerMac\n")) { *using_hash = true; goto out; }