Commit e8aa45f8 authored by Jingqi Liu's avatar Jingqi Liu Committed by Joerg Roedel
Browse files

iommu/vt-d: debugfs: Dump entry pointing to huge page 



For the page table entry pointing to a huge page, the data below the
level of the huge page is meaningless and does not need to be dumped.

Signed-off-by: default avatarJingqi Liu <Jingqi.liu@intel.com>
Link: https://lore.kernel.org/r/20231013135811.73953-2-Jingqi.liu@intel.com


Signed-off-by: default avatarLu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent c61c255e

drivers/iommu/intel/debugfs.c

+8 −3
Original line number Diff line number Diff line
@@ -311,9 +311,14 @@ static inline unsigned long level_to_directory_size(int level) 
static inline void

dump_page_info(struct seq_file *m, unsigned long iova, u64 *path)

{

	seq_printf(m, "0x%013lx |\t0x%016llx\t0x%016llx\t0x%016llx\t0x%016llx\t0x%016llx\n",

		   iova >> VTD_PAGE_SHIFT, path[5], path[4],

		   path[3], path[2], path[1]);

	seq_printf(m, "0x%013lx |\t0x%016llx\t0x%016llx\t0x%016llx",

		   iova >> VTD_PAGE_SHIFT, path[5], path[4], path[3]);

	if (path[2]) {

		seq_printf(m, "\t0x%016llx", path[2]);

		if (path[1])

			seq_printf(m, "\t0x%016llx", path[1]);

	}

	seq_putc(m, '\n');

}



static void pgtable_walk_level(struct seq_file *m, struct dma_pte *pde,