From a23e18ea545675aca7551ef2395f6df40a3acb29 Mon Sep 17 00:00:00 2001 From: Leandro Lupori Date: Fri, 22 Oct 2021 13:44:21 -0300 Subject: [PATCH] powerpc64: tell kernel when radix is not available If CAS detects that radix is not supported, set radix_mmu to 0 to avoid the kernel trying to use it and panic. MFC after: 2 weeks Sponsored by: Instituto de Pesquisas Eldorado (eldorado.org.br) --- stand/powerpc/ofw/cas.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/stand/powerpc/ofw/cas.c b/stand/powerpc/ofw/cas.c index 0a12f31d1a1a..e95af42762a5 100644 --- a/stand/powerpc/ofw/cas.c +++ b/stand/powerpc/ofw/cas.c @@ -234,9 +234,15 @@ ppc64_cas(void) } } - if ((var = getenv("radix_mmu")) != NULL && var[0] == '0') + if (!radix_mmu) + /* + * If radix is not supported, set radix_mmu to 0 to avoid + * the kernel trying to use it and panic. + */ + setenv("radix_mmu", "0", 1); + else if ((var = getenv("radix_mmu")) != NULL && var[0] == '0') radix_mmu = 0; - if (radix_mmu) + else ov5[OV5_MMU_INDEX] = OV5_MMU_RADIX; inst = OF_open("/");