Unverified Commit 0713ff33 authored by Yu Chien Peter Lin's avatar Yu Chien Peter Lin Committed by Palmer Dabbelt
Browse files

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: default avatarYu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: default avatarAlexandre Ghiti <alexghiti@rivosinc.com>
Tested-by: default avatarAlexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20230921025022.3989723-3-peterlin@andestech.com


Signed-off-by: default avatarPalmer Dabbelt <palmer@rivosinc.com>
parent d5d2c264

arch/riscv/mm/ptdump.c

+16 −0
Original line number Diff line number Diff line
@@ -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 {