Re: [PATCH v3 1/5] powerpc/mm: set the radix linear page mapping size

On Mon, 2016-12-19 at 14:28 +0530, Aneesh Kumar K.V wrote:

Reza Arbab [off-list ref] writes:

quoted

This was defaulting to 4K, regardless of PAGE_SIZE.

Signed-off-by: Reza Arbab <redacted>
---
 arch/powerpc/mm/pgtable-radix.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/mm/pgtable-radix.c

b/arch/powerpc/mm/pgtable-radix.c
index 623a0dc..54bd70e 100644

--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c

@@ -351,8 +351,10 @@ void __init radix__early_init_mmu(void)

 #ifdef CONFIG_PPC_64K_PAGES
 	/* PAGE_SIZE mappings */
 	mmu_virtual_psize = MMU_PAGE_64K;
+	mmu_linear_psize = MMU_PAGE_64K;

That is not clearly correct, we map the linear address with either
64K,
2M or 1G depending on the memory available. Take a look at
static void __init radix_init_pgtable(void)

So should we fix that initialization regardless or take it out ?

quoted

 #else
 	mmu_virtual_psize = MMU_PAGE_4K;
+	mmu_linear_psize = MMU_PAGE_4K;
 #endif

 #ifdef CONFIG_SPARSEMEM_VMEMMAP
-- 
1.8.3.1