[Crash-utility] [PATCH] ppc64: increase MAX_PHYSMEM_BITS to 128TB
With kernel commit 7d4340bb92a9 ("powerpc/mm: Increase MAX_PHYSMEM_BITS
to 128TB with SPARSEMEM_VMEMMAP config"), MAX_PHYSMEM_BITS is bumped up
to 47. Make the appropriate update here.
Signed-off-by: Hari Bathini <hbathini(a)linux.ibm.com>
---
defs.h | 1 +
ppc64.c | 5 ++++-
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/defs.h b/defs.h
index 80c61ef..5b64bb7 100644
--- a/defs.h
+++ b/defs.h
@@ -4073,6 +4073,7 @@ struct efi_memory_desc_t {
#define _SECTION_SIZE_BITS 24
#define _MAX_PHYSMEM_BITS 44
#define _MAX_PHYSMEM_BITS_3_7 46
+#define _MAX_PHYSMEM_BITS_4_19 47
#endif /* PPC64 */
diff --git a/ppc64.c b/ppc64.c
index 8badcde..ee2f76f 100644
--- a/ppc64.c
+++ b/ppc64.c
@@ -554,7 +554,10 @@ ppc64_init(int when)
ppc64_vmemmap_init();
machdep->section_size_bits = _SECTION_SIZE_BITS;
- if (THIS_KERNEL_VERSION >= LINUX(3,7,0))
+ if ((machdep->flags & VMEMMAP) &&
+ (THIS_KERNEL_VERSION >= LINUX(4,19,0)))
+ machdep->max_physmem_bits = _MAX_PHYSMEM_BITS_4_19;
+ else if (THIS_KERNEL_VERSION >= LINUX(3,7,0))
machdep->max_physmem_bits = _MAX_PHYSMEM_BITS_3_7;
else
machdep->max_physmem_bits = _MAX_PHYSMEM_BITS;