Hello Bhupesh, >Kernel commit 2f18d533757da3899f4bedab0b2c051b080079dc lowered the >max real address on ppc64 to 53 bits. > >Make similar changes in makedumpfile (on basis of the underlying kernel >version), without which the makedumpfile will fail to create a dumpfile >and instead throw a SEGV fault as shown below on kernels >= v4.11: > > # makedumpfile --split -d 31 -x vmlinux vmcore dumpfile_{1,2,3} 2>&1 > > The kernel version is not supported. > The makedumpfile operation may be incomplete. > [ 1196.252094] makedumpfile[2367]: unhandled signal 11 at > 00000100f7011ca8 nip 000000001001eecc lr 000000001001f3c0 code 30001 > Segmentation fault > >Signed-off-by: Bhupesh Sharma <bhsharma at redhat.com> >--- > makedumpfile.h | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > >diff --git a/makedumpfile.h b/makedumpfile.h >index 7d81bbcf2234..142753d84e8d 100644 >--- a/makedumpfile.h >+++ b/makedumpfile.h >@@ -684,8 +684,9 @@ unsigned long get_kvbase_arm64(void); > #define PMD_MASKED_BITS_64K_4_6 0xc0000000000000ffUL > > #define PTE_RPN_MASK_DEFAULT 0xffffffffffffffffUL >-#define PTE_RPN_SIZE_L4_4_6 (info->page_size == 65536 ? 41 : 45) >-#define PTE_RPN_MASK_L4_4_6 (((1UL << PTE_RPN_SIZE_L4_4_6) - 1) << info->page_shift) >+#define PAGE_PA_MAX_L4_4_6 (info->kernel_version >= KERNEL_VERSION(4,11,0) ? 53 : 57) >+#define PTE_RPN_MASK_L4_4_6 \ >+ (((1UL << PAGE_PA_MAX_L4_4_6) - 1) & ~((1UL << info->page_shift) - 1)) This fix is a bit complicated, please introduce *_L4_4_11 simply. Thanks Atsushi Kumagai > #define PTE_RPN_SHIFT_L4_4_6 info->page_shift > > #define PGD_MASKED_BITS_4_7 0xc0000000000000ffUL >-- >2.7.4 >