* Required for kernel 4.20
With kernel commit 4ffe713b7587 ("powerpc/mm: Increase the max addressable
memory to 2PB"), MAX_PHYSMEM_BITS is bumped up to 51 for SPARSEMEM_VMEMMAP
and SPARSEMEM_EXTREME case. Make the appropriate update here.
Signed-off-by: Hari Bathini <hbathini@xxxxxxxxxxxxx>
---
arch/ppc64.c | 5 +++++
makedumpfile.h | 1 +
2 files changed, 6 insertions(+)
diff --git a/arch/ppc64.c b/arch/ppc64.c
index 947a125..5b8231e 100644
--- a/arch/ppc64.c
+++ b/arch/ppc64.c
@@ -486,6 +486,11 @@ set_ppc64_max_physmem_bits(void)
|| (array_len == (NR_MEM_SECTIONS() / _SECTIONS_PER_ROOT())))
return TRUE;
+ info->max_physmem_bits = _MAX_PHYSMEM_BITS_4_20;
+ if ((array_len == (NR_MEM_SECTIONS() / _SECTIONS_PER_ROOT_EXTREME()))
+ || (array_len == (NR_MEM_SECTIONS() / _SECTIONS_PER_ROOT())))
+ return TRUE;
+
return FALSE;
}
diff --git a/makedumpfile.h b/makedumpfile.h
index 73813ed..d49f1f1 100644
--- a/makedumpfile.h
+++ b/makedumpfile.h
@@ -672,6 +672,7 @@ unsigned long get_kvbase_arm64(void);
#define _MAX_PHYSMEM_BITS_ORIG (44)
#define _MAX_PHYSMEM_BITS_3_7 (46)
#define _MAX_PHYSMEM_BITS_4_19 (47)
+#define _MAX_PHYSMEM_BITS_4_20 (51)
#define REGION_SHIFT (60UL)
#define VMEMMAP_REGION_ID (0xfUL)
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