* [PATCH] powerpc/mm: Update hid register on secondaries too
@ 2016-11-17 10:16 Aneesh Kumar K.V
2016-11-22 0:38 ` Michael Ellerman
0 siblings, 1 reply; 2+ messages in thread
From: Aneesh Kumar K.V @ 2016-11-17 10:16 UTC (permalink / raw)
To: benh, paulus, mpe; +Cc: linuxppc-dev, Aneesh Kumar K.V
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 <mikey@neuling.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: powerpc/mm: Update hid register on secondaries too
2016-11-17 10:16 [PATCH] powerpc/mm: Update hid register on secondaries too Aneesh Kumar K.V
@ 2016-11-22 0:38 ` Michael Ellerman
0 siblings, 0 replies; 2+ messages in thread
From: Michael Ellerman @ 2016-11-22 0:38 UTC (permalink / raw)
To: Aneesh Kumar K.V, benh, paulus; +Cc: linuxppc-dev, Aneesh Kumar K.V
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 <mikey@neuling.org>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Applied to powerpc fixes, thanks.
https://git.kernel.org/powerpc/c/cac4a185405d4415eca269cae97643
cheers
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2016-11-22 0:38 ` Michael Ellerman
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