[PATCH] powerpc/mm: Update hid register on secondaries too

We need to update 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 <redacted>
Signed-off-by: Aneesh Kumar K.V <redacted>
---
 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 44d3c3a38e3e..5503078090cd 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 735be6821e90..2fc7336619b3 100644
--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c

@@ -404,6 +404,10 @@ 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);
 

-- 
2.10.2

On Thu, 2016-11-17 at 10:16:23 UTC, "Aneesh Kumar K.V" wrote:

We need to update 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 <redacted>
Signed-off-by: Aneesh Kumar K.V <redacted>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/cac4a185405d4415eca269cae97643

cheers