* [PATCH] powerpc/mm/radix: Use the right page size for vmemmap mapping
@ 2019-06-29 7:38 Aneesh Kumar K.V
2019-07-01 2:17 ` Nicholas Piggin
0 siblings, 1 reply; 2+ messages in thread
From: Aneesh Kumar K.V @ 2019-06-29 7:38 UTC (permalink / raw)
To: npiggin, paulus, mpe; +Cc: Aneesh Kumar K.V, linuxppc-dev
Also on hash with 4K PAGE_SIZE make sure we use 4K page size for
vmemmap.
Fixes: 2bfd65e45e87 ("powerpc/mm/radix: Add radix callbacks for early init routines")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
---
arch/powerpc/mm/book3s64/hash_utils.c | 4 +---
arch/powerpc/mm/book3s64/radix_pgtable.c | 16 +++++++---------
2 files changed, 8 insertions(+), 12 deletions(-)
diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c
index 49f8c8940bd9..54013bbc60aa 100644
--- a/arch/powerpc/mm/book3s64/hash_utils.c
+++ b/arch/powerpc/mm/book3s64/hash_utils.c
@@ -686,10 +686,8 @@ static void __init htab_init_page_sizes(void)
if (mmu_psize_defs[MMU_PAGE_16M].shift &&
memblock_phys_mem_size() >= 0x40000000)
mmu_vmemmap_psize = MMU_PAGE_16M;
- else if (mmu_psize_defs[MMU_PAGE_64K].shift)
- mmu_vmemmap_psize = MMU_PAGE_64K;
else
- mmu_vmemmap_psize = MMU_PAGE_4K;
+ mmu_vmemmap_psize = mmu_virtual_psize;
#endif /* CONFIG_SPARSEMEM_VMEMMAP */
printk(KERN_DEBUG "Page orders: linear mapping = %d, "
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
index 60d97fab4de2..03d804a0dc8c 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -529,14 +529,6 @@ void __init radix__early_init_devtree(void)
mmu_psize_defs[MMU_PAGE_64K].shift = 16;
mmu_psize_defs[MMU_PAGE_64K].ap = 0x5;
found:
-#ifdef CONFIG_SPARSEMEM_VMEMMAP
- if (mmu_psize_defs[MMU_PAGE_2M].shift) {
- /*
- * map vmemmap using 2M if available
- */
- mmu_vmemmap_psize = MMU_PAGE_2M;
- }
-#endif /* CONFIG_SPARSEMEM_VMEMMAP */
return;
}
@@ -601,7 +593,13 @@ void __init radix__early_init_mmu(void)
#ifdef CONFIG_SPARSEMEM_VMEMMAP
/* vmemmap mapping */
- mmu_vmemmap_psize = mmu_virtual_psize;
+ if (mmu_psize_defs[MMU_PAGE_2M].shift) {
+ /*
+ * map vmemmap using 2M if available
+ */
+ mmu_vmemmap_psize = MMU_PAGE_2M;
+ } else
+ mmu_vmemmap_psize = mmu_virtual_psize;
#endif
/*
* initialize page table size
--
2.21.0
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH] powerpc/mm/radix: Use the right page size for vmemmap mapping
2019-06-29 7:38 [PATCH] powerpc/mm/radix: Use the right page size for vmemmap mapping Aneesh Kumar K.V
@ 2019-07-01 2:17 ` Nicholas Piggin
0 siblings, 0 replies; 2+ messages in thread
From: Nicholas Piggin @ 2019-07-01 2:17 UTC (permalink / raw)
To: Aneesh Kumar K.V, mpe, paulus; +Cc: linuxppc-dev
Aneesh Kumar K.V's on June 29, 2019 5:38 pm:
> Also on hash with 4K PAGE_SIZE make sure we use 4K page size for
> vmemmap.
Can you add a line in the changelog to describe the radix problem
you fixed?
Also I would say the also could be a separate patch?
Thanks,
Nick
>
> Fixes: 2bfd65e45e87 ("powerpc/mm/radix: Add radix callbacks for early init routines")
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
> ---
> arch/powerpc/mm/book3s64/hash_utils.c | 4 +---
> arch/powerpc/mm/book3s64/radix_pgtable.c | 16 +++++++---------
> 2 files changed, 8 insertions(+), 12 deletions(-)
>
> diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c
> index 49f8c8940bd9..54013bbc60aa 100644
> --- a/arch/powerpc/mm/book3s64/hash_utils.c
> +++ b/arch/powerpc/mm/book3s64/hash_utils.c
> @@ -686,10 +686,8 @@ static void __init htab_init_page_sizes(void)
> if (mmu_psize_defs[MMU_PAGE_16M].shift &&
> memblock_phys_mem_size() >= 0x40000000)
> mmu_vmemmap_psize = MMU_PAGE_16M;
> - else if (mmu_psize_defs[MMU_PAGE_64K].shift)
> - mmu_vmemmap_psize = MMU_PAGE_64K;
> else
> - mmu_vmemmap_psize = MMU_PAGE_4K;
> + mmu_vmemmap_psize = mmu_virtual_psize;
> #endif /* CONFIG_SPARSEMEM_VMEMMAP */
>
> printk(KERN_DEBUG "Page orders: linear mapping = %d, "
> diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
> index 60d97fab4de2..03d804a0dc8c 100644
> --- a/arch/powerpc/mm/book3s64/radix_pgtable.c
> +++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
> @@ -529,14 +529,6 @@ void __init radix__early_init_devtree(void)
> mmu_psize_defs[MMU_PAGE_64K].shift = 16;
> mmu_psize_defs[MMU_PAGE_64K].ap = 0x5;
> found:
> -#ifdef CONFIG_SPARSEMEM_VMEMMAP
> - if (mmu_psize_defs[MMU_PAGE_2M].shift) {
> - /*
> - * map vmemmap using 2M if available
> - */
> - mmu_vmemmap_psize = MMU_PAGE_2M;
> - }
> -#endif /* CONFIG_SPARSEMEM_VMEMMAP */
> return;
> }
>
> @@ -601,7 +593,13 @@ void __init radix__early_init_mmu(void)
>
> #ifdef CONFIG_SPARSEMEM_VMEMMAP
> /* vmemmap mapping */
> - mmu_vmemmap_psize = mmu_virtual_psize;
> + if (mmu_psize_defs[MMU_PAGE_2M].shift) {
> + /*
> + * map vmemmap using 2M if available
> + */
> + mmu_vmemmap_psize = MMU_PAGE_2M;
> + } else
> + mmu_vmemmap_psize = mmu_virtual_psize;
> #endif
> /*
> * initialize page table size
> --
> 2.21.0
>
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2019-06-29 7:38 [PATCH] powerpc/mm/radix: Use the right page size for vmemmap mapping Aneesh Kumar K.V
2019-07-01 2:17 ` Nicholas Piggin
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