[PATCH] powerpc/mm: Update POWER9 HID on secondaries too

[Michael Neuling]

From: "Aneesh Kumar K.V" <aneesh.kumar at linux.vnet.ibm.com>

We need to update the HID on secondaries for the selected MMU mode.

Fixes: ad410674f5606a ("powerpc/mm: Update the HID bit when switching from radix to hash")

Reported-by: Michael Neuling <mikey at neuling.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar at linux.vnet.ibm.com>
Signed-off-by: Michael Neuling <mikey at neuling.org>
---
 arch/powerpc/mm/hash_utils_64.c | 4 ++++
 arch/powerpc/mm/pgtable-radix.c | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 44d3c3a38e..5503078090 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -1029,6 +1029,10 @@ void hash__early_init_mmu_secondary(void)
 {
 	/* Initialize hash table for that CPU */
 	if (!firmware_has_feature(FW_FEATURE_LPAR)) {
+
+		if (cpu_has_feature(CPU_FTR_POWER9_DD1))
+			update_hid_for_hash();
+
 		if (!cpu_has_feature(CPU_FTR_ARCH_300))
 			mtspr(SPRN_SDR1, _SDR1);
 		else
diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c
index e93e38455d..9dfd3f1369 100644
--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c
@@ -388,6 +388,10 @@ void radix__early_init_mmu_secondary(void)
 	 * update partition table control register and UPRT
 	 */
 	if (!firmware_has_feature(FW_FEATURE_LPAR)) {
+
+		if (cpu_has_feature(CPU_FTR_POWER9_DD1))
+			update_hid_for_radix();
+
 		lpcr = mfspr(SPRN_LPCR);
 		mtspr(SPRN_LPCR, lpcr | LPCR_UPRT | LPCR_HR);
 
-- 
2.9.3