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

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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: Jingqi Liu <Jingqi.liu@intel.com>
Link: https://lore.kernel.org/r/20231013135811.73953-2-Jingqi.liu@intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Jingqi Liu 2023-10-16 11:28:28 +08:00 committed by Joerg Roedel
parent c61c255e11
commit e8aa45f8cc
1 changed files with 8 additions and 3 deletions
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11
drivers/iommu/intel/debugfs.c
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@ -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,