powerpc/ptdump: Fix walk_vmemmap() to also print first vmemmap entry

Currently walk_vmemmap() skips the first vmemmap entry pointed to by vmemmap_list pointer itself. Fix that. With the fix applied the vmemmap entry at 0xc00c000000000000 for hash is displayed: $ cat /sys/kernel/debug/kernel_hash_pagetable ... 0xc00c000000010000: AVPN:cd7bd4e0000 ssize: 1T ... 0xc00c000000000000: AVPN:cd7bd4e0000 ssize: 1T ... Signed-off-by: Ritesh Harjani (IBM) <[email protected]> [mpe: Tweak change log wording and add example output] Signed-off-by: Michael Ellerman <[email protected]> Link: https://msgid.link/a19ee3dc2b304d39da364a592d5cd167449f8c4a.1713365940.git.ritesh.list@gmail.com
linuxppc · Apr 18, 2024 · f318c8b · f318c8b
1 parent 0db880f
commit f318c8b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/arch/powerpc/mm/ptdump/hashpagetable.c b/arch/powerpc/mm/ptdump/hashpagetable.c
@@ -491,7 +491,7 @@ static void walk_vmemmap(struct pg_state *st)
 	 * Traverse the vmemmaped memory and dump pages that are in the hash
 	 * pagetable.
 	 */
-	while (ptr->list) {
+	while (ptr) {
 		hpte_find(st, ptr->virt_addr, mmu_vmemmap_psize);
 		ptr = ptr->list;
 	}