diff options
| author | Ritesh Harjani (IBM) <ritesh.list@gmail.com> | 2025-10-30 20:27:28 +0530 |
|---|---|---|
| committer | Madhavan Srinivasan <maddy@linux.ibm.com> | 2025-11-18 12:35:52 +0530 |
| commit | eae40a6da63faa9fb63ff61f8fa2b3b57da78a84 (patch) | |
| tree | bc292f6ad1a6858b2b66a3cb4d5783d0eb6fba69 | |
| parent | 17b45ccf09882e0c808ad2cf62acdc90ad968746 (diff) | |
powerpc/64s/ptdump: Fix kernel_hash_pagetable dump for ISA v3.00 HPTE format
HPTE format was changed since Power9 (ISA 3.0) onwards. While dumping
kernel hash page tables, nothing gets printed on powernv P9+. This patch
utilizes the helpers added in the patch tagged as fixes, to convert new
format to old format and dump the hptes. This fix is only needed for
native_find() (powernv), since pseries continues to work fine with the
old format.
Fixes: 6b243fcfb5f1e ("powerpc/64: Simplify adaptation to new ISA v3.00 HPTE format")
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/4c2bb9e5b3cfbc0dd80b61b67cdd3ccfc632684c.1761834163.git.ritesh.list@gmail.com
| -rw-r--r-- | arch/powerpc/mm/ptdump/hashpagetable.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/mm/ptdump/hashpagetable.c b/arch/powerpc/mm/ptdump/hashpagetable.c index a6baa6166d94..671d0dc00c6d 100644 --- a/arch/powerpc/mm/ptdump/hashpagetable.c +++ b/arch/powerpc/mm/ptdump/hashpagetable.c @@ -216,6 +216,8 @@ static int native_find(unsigned long ea, int psize, bool primary, u64 *v, u64 vpn = hpt_vpn(ea, vsid, ssize); hash = hpt_hash(vpn, shift, ssize); want_v = hpte_encode_avpn(vpn, psize, ssize); + if (cpu_has_feature(CPU_FTR_ARCH_300)) + want_v = hpte_old_to_new_v(want_v); /* to check in the secondary hash table, we invert the hash */ if (!primary) @@ -229,6 +231,10 @@ static int native_find(unsigned long ea, int psize, bool primary, u64 *v, u64 /* HPTE matches */ *v = be64_to_cpu(hptep->v); *r = be64_to_cpu(hptep->r); + if (cpu_has_feature(CPU_FTR_ARCH_300)) { + *v = hpte_new_to_old_v(*v, *r); + *r = hpte_new_to_old_r(*r); + } return 0; } ++hpte_group; |