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| author | Yu Chien Peter Lin <peterlin@andestech.com> | 2023-09-21 10:50:21 +0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-11-05 09:41:54 -0800 |
| commit | 0713ff337173884bcaf163e44cadd6a56bc8193a (patch) | |
| tree | 5732dd2031c3de5392329e238eb0240e66383a3b /arch/riscv | |
| parent | d5d2c264d33b9acf1a0216861942176ee3569258 (diff) | |
| download | lwn-0713ff337173884bcaf163e44cadd6a56bc8193a.tar.gz lwn-0713ff337173884bcaf163e44cadd6a56bc8193a.zip | |
riscv: Introduce PBMT field to PTDUMP
This patch introduces the PBMT field to the PTDUMP, so it can
display the memory attributes for NC or IO.
Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Tested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20230921025022.3989723-3-peterlin@andestech.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/mm/ptdump.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/riscv/mm/ptdump.c b/arch/riscv/mm/ptdump.c index 57a0926c6627..13997cf3fe36 100644 --- a/arch/riscv/mm/ptdump.c +++ b/arch/riscv/mm/ptdump.c @@ -135,6 +135,12 @@ struct prot_bits { static const struct prot_bits pte_bits[] = { { +#ifdef CONFIG_64BIT + .mask = _PAGE_MTMASK_SVPBMT, + .set = "MT(%s)", + .clear = " .. ", + }, { +#endif .mask = _PAGE_SOFT, .set = "RSW(%d)", .clear = " .. ", @@ -205,6 +211,16 @@ static void dump_prot(struct pg_state *st) if (val) { if (pte_bits[i].mask == _PAGE_SOFT) sprintf(s, pte_bits[i].set, val >> 8); +#ifdef CONFIG_64BIT + else if (pte_bits[i].mask == _PAGE_MTMASK_SVPBMT) { + if (val == _PAGE_NOCACHE_SVPBMT) + sprintf(s, pte_bits[i].set, "NC"); + else if (val == _PAGE_IO_SVPBMT) + sprintf(s, pte_bits[i].set, "IO"); + else + sprintf(s, pte_bits[i].set, "??"); + } +#endif else sprintf(s, "%s", pte_bits[i].set); } else { |