acrn-kernel/arch/riscv/mm
Song Shuai 645257ad8d riscv: correct pt_level name via pgtable_l5/4_enabled
commit e59e5e2754bf983fc58ad18f99b5eec01f1a0745 upstream.

The pt_level uses CONFIG_PGTABLE_LEVELS to display page table names.
But if page mode is downgraded from kernel cmdline or restricted by
the hardware in 64BIT, it will give a wrong name.

Like, using no4lvl for sv39, ptdump named the 1G-mapping as "PUD"
that should be "PGD":

0xffffffd840000000-0xffffffd900000000    0x00000000c0000000         3G PUD     D A G . . W R V

So select "P4D/PUD" or "PGD" via pgtable_l5/4_enabled to correct it.

Fixes: e8a62cc26d ("riscv: Implement sv48 support")
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Song Shuai <suagrfillet@gmail.com>
Link: https://lore.kernel.org/r/20230712115740.943324-1-suagrfillet@gmail.com
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230830044129.11481-3-palmer@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-11-28 17:07:20 +00:00
..
Makefile
cacheflush.c
context.c
dma-noncoherent.c
extable.c
fault.c riscv/mm: Convert to using lock_mm_and_find_vma() 2023-07-01 13:16:24 +02:00
hugetlbpage.c
init.c riscv: mm: fix truncation warning on RV32 2023-07-23 13:49:26 +02:00
kasan_init.c
pageattr.c
physaddr.c
ptdump.c riscv: correct pt_level name via pgtable_l5/4_enabled 2023-11-28 17:07:20 +00:00
tlbflush.c