[makedumpfile PATCH] ppc64: update hash page table geometry

[Atsushi Kumagai]

Hello Hari,

>Starting with kernel 4.12, BOOK3S hash page table geometry is updated
>to accommodate larger virtual address range. Update here accordingly.
>
>Signed-off-by: Hari Bathini <hbathini at linux.vnet.ibm.com>

Thanks, I'll merge this patch into v1.6.3.

Regards
Atsushi Kumagai

>---
> arch/ppc64.c   |   12 +++++++++---
> makedumpfile.h |    3 +++
> 2 files changed, 12 insertions(+), 3 deletions(-)
>
>diff --git a/arch/ppc64.c b/arch/ppc64.c
>index 2f5a0da..8bdbcc5 100644
>--- a/arch/ppc64.c
>+++ b/arch/ppc64.c
>@@ -245,10 +245,16 @@ ppc64_vmalloc_init(void)
>
> 		} else if (info->kernel_version >= KERNEL_VERSION(4, 6, 0)) {
> 			info->l1_index_size = PTE_INDEX_SIZE_L4_64K_3_10;
>-			info->l2_index_size = PMD_INDEX_SIZE_L4_64K_4_6;
>-			info->l3_index_size = PUD_INDEX_SIZE_L4_64K_4_6;
>-			info->l4_index_size = PGD_INDEX_SIZE_L4_64K_3_10;
>
>+			if (info->kernel_version >= KERNEL_VERSION(4, 12, 0)) {
>+				info->l2_index_size = PMD_INDEX_SIZE_L4_64K_4_12;
>+				info->l3_index_size = PUD_INDEX_SIZE_L4_64K_4_12;
>+				info->l4_index_size = PGD_INDEX_SIZE_L4_64K_4_12;
>+			} else {
>+				info->l2_index_size = PMD_INDEX_SIZE_L4_64K_4_6;
>+				info->l3_index_size = PUD_INDEX_SIZE_L4_64K_4_6;
>+				info->l4_index_size = PGD_INDEX_SIZE_L4_64K_3_10;
>+			}
> 		} else if (info->kernel_version >= KERNEL_VERSION(3, 10, 0)) {
> 			info->l1_index_size = PTE_INDEX_SIZE_L4_64K_3_10;
> 			info->l2_index_size = PMD_INDEX_SIZE_L4_64K_3_10;
>diff --git a/makedumpfile.h b/makedumpfile.h
>index db75379..b983aaf 100644
>--- a/makedumpfile.h
>+++ b/makedumpfile.h
>@@ -670,6 +670,9 @@ unsigned long get_kvbase_arm64(void);
> #define PGD_INDEX_SIZE_L4_64K_3_10  12
> #define PMD_INDEX_SIZE_L4_64K_4_6  5
> #define PUD_INDEX_SIZE_L4_64K_4_6  5
>+#define PMD_INDEX_SIZE_L4_64K_4_12 10
>+#define PUD_INDEX_SIZE_L4_64K_4_12 7
>+#define PGD_INDEX_SIZE_L4_64K_4_12 8
> #define PTE_INDEX_SIZE_RADIX_64K  5
> #define PMD_INDEX_SIZE_RADIX_64K  9
> #define PUD_INDEX_SIZE_RADIX_64K  9