mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

arm64: fault: Print info about page table structure when dumping pte 

Whilst debugging a remote crash, I noticed that show_pte is unhelpful
when it comes to describing the structure of the page table being walked.
This is easily fixed by printing out the page table (swapper vs user),
page size and virtual address size when displaying the PGD address.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon 2017-05-15 15:23:58 +01:00
parent 83016b2042
commit 1eb34b6e51
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm64/mm/fault.c
View File

@ -104,7 +104,9 @@ void show_pte(unsigned long addr)
return;
}
pr_alert("pgd = %p\n", mm->pgd);
pr_alert("%s pgtable: %luk pages, %u-bit VAs, pgd = %p\n",
mm == &init_mm ? "swapper" : "user", PAGE_SIZE / SZ_1K,
VA_BITS, mm->pgd);
pgd = pgd_offset(mm, addr);
pr_alert("[%016lx] *pgd=%016llx", addr, pgd_val(*pgd));