----- Original Message ----- > Starting with kernel 4.12, the hash page table geometry is updated to > accommodate larger VA range. Update here accordingly. > > Signed-off-by: Hari Bathini <hbathini@xxxxxxxxxxxxxxxxxx> > --- > changes in v1: > * Kernel commit 92d9dfda8b54 reverted the geometry update > for 4K hash pagetable. So, undo'ing 4K pagesize changes. Hari, As discussed in the related bugzilla, this patch fixes the user-space address translation issues seen in 4.14-based kernels. Queued for crash-7.2.1: https://github.com/crash-utility/crash/commit/c8178eca9c74f81a7f803a58d339635cc152e8d9 Thanks for your help, Dave > > defs.h | 3 +++ > ppc64.c | 12 +++++++++--- > 2 files changed, 12 insertions(+), 3 deletions(-) > > diff --git a/defs.h b/defs.h > index 18f36b3..9132075 100644 > --- a/defs.h > +++ b/defs.h > @@ -3915,6 +3915,9 @@ struct efi_memory_desc_t { > #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 > diff --git a/ppc64.c b/ppc64.c > index 84cec09..672ee60 100644 > --- a/ppc64.c > +++ b/ppc64.c > @@ -447,10 +447,16 @@ ppc64_init(int when) > } else if (!(machdep->flags & BOOK3E) && > (THIS_KERNEL_VERSION >= LINUX(4,6,0))) { > m->l1_index_size = PTE_INDEX_SIZE_L4_64K_3_10; > - m->l2_index_size = PMD_INDEX_SIZE_L4_64K_4_6; > - m->l3_index_size = PUD_INDEX_SIZE_L4_64K_4_6; > - m->l4_index_size = PGD_INDEX_SIZE_L4_64K_3_10; > > + if (THIS_KERNEL_VERSION >= LINUX(4,12,0)) { > + m->l2_index_size = PMD_INDEX_SIZE_L4_64K_4_12; > + m->l3_index_size = PUD_INDEX_SIZE_L4_64K_4_12; > + m->l4_index_size = PGD_INDEX_SIZE_L4_64K_4_12; > + } else { > + m->l2_index_size = PMD_INDEX_SIZE_L4_64K_4_6; > + m->l3_index_size = PUD_INDEX_SIZE_L4_64K_4_6; > + m->l4_index_size = PGD_INDEX_SIZE_L4_64K_3_10; > + } > } else if (THIS_KERNEL_VERSION >= LINUX(3,10,0)) { > m->l1_index_size = PTE_INDEX_SIZE_L4_64K_3_10; > m->l2_index_size = PMD_INDEX_SIZE_L4_64K_3_10; > > -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
