On POWER9 the hypervisor requires the guest to decide whether it would
like to use a hash or radix mmu model at the time it calls
ibm,client-architecture-support (CAS) based on what the hypervisor has
said it's allowed to do. It is possible to disable radix by passing
"disable_radix" on the command line. The next patch will add support for
the new CAS format, thus we need to parse the command line before calling
CAS so we can correctly select which mmu we would like to use.
Signed-off-by: Suraj Jitindar Singh <sjitindarsi...@gmail.com>
Reviewed-by: Paul Mackerras <pau...@ozlabs.org>
---
V1 -> V2:
- Reword commit message for clarity. No functional change
---
arch/powerpc/kernel/prom_init.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index d3db1bc..37b5a29 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2993,6 +2993,11 @@ unsigned long __init prom_init(unsigned long r3,
unsigned long r4,
*/
prom_check_initrd(r3, r4);
+ /*
+ * Do early parsing of command line
+ */
+ early_cmdline_parse();
+
#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
/*
* On pSeries, inform the firmware about our capabilities
@@ -3009,11 +3014,6 @@ unsigned long __init prom_init(unsigned long r3,
unsigned long r4,
copy_and_flush(0, kbase, 0x100, 0);
/*
- * Do early parsing of command line
- */
- early_cmdline_parse();
-
- /*
* Initialize memory management within prom_init
*/
prom_init_mem();
--
2.5.5
