[Crash-utility] [PATCH] RISCV64: Add 'PAGE DIRECTORY' property to the 'vtop' command
Currently, 'vtop' command does not include 'PAGE DIRECTORY' information
for
RISC-V-based vmcores. Since 'PAGE DIRECTORY' is used as the root page table,
we need this information. Note that Arm64, Arm32 and x86 vmcore shows
'PAGE DIRECTORY' for 'vtop' command.
(before)
crash> vtop 0xffffffff80d8e1e0
VIRTUAL PHYSICAL
ffffffff80d8e1e0 40f8e1e0
PGD: ffffffff81c4fff0 => 4fffe801
PMD: 000000013fffa000 => 00000000103800eb
PTE: 40e00000 => b35030414c583
PAGE: 002cd40c10531000
PTE PHYSICAL FLAGS
b35030414c583 2cd40c10531000 (PRESENT|READ|DIRTY|SOFT)
(after)
crash> vtop 0xffffffff80d8e1e0
VIRTUAL PHYSICAL
ffffffff80d8e1e0 40f8e1e0
PAGE DIRECTORY: ffffffff81c4f000
PGD: ffffffff81c4fff0 => 4fffe801
PMD: 000000013fffa000 => 00000000103800eb
PTE: 40e00000 => b35030414c583
PAGE: 002cd40c10531000
PTE PHYSICAL FLAGS
b35030414c583 2cd40c10531000 (PRESENT|READ|DIRTY|SOFT)
Signed-off-by: Austin Kim <austindh.kim(a)gmail.com>
---
riscv64.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/riscv64.c b/riscv64.c
index 073ebb9..ef5c41d 100644
--- a/riscv64.c
+++ b/riscv64.c
@@ -634,6 +634,9 @@ riscv64_vtop_3level_4k(ulong *pgd, ulong vaddr, physaddr_t *paddr, int
verbose)
ulong pte_val, pte_pfn;
ulong pt_phys;
+ if (verbose)
+ fprintf(fp, "PAGE DIRECTORY: %lx\n", (ulong)pgd);
+
/* PGD */
pgd_ptr = pgd + pgd_index_l3_4k(vaddr);
FILL_PGD(pgd, KVADDR, PAGESIZE());
@@ -1213,6 +1216,9 @@ riscv64_vtop_4level_4k(ulong *pgd, ulong vaddr, physaddr_t *paddr,
int verbose)
ulong pte_val, pte_pfn;
ulong pt_phys;
+ if (verbose)
+ fprintf(fp, "PAGE DIRECTORY: %lx\n", (ulong)pgd);
+
/* PGD */
pgd_ptr = pgd + pgd_index_l4_4k(vaddr);
FILL_PGD(pgd, KVADDR, PAGESIZE());
@@ -1289,6 +1295,9 @@ riscv64_vtop_5level_4k(ulong *pgd, ulong vaddr, physaddr_t *paddr,
int verbose)
ulong pte_val, pte_pfn;
ulong pt_phys;
+ if (verbose)
+ fprintf(fp, "PAGE DIRECTORY: %lx\n", (ulong)pgd);
+
/* PGD */
pgd_ptr = pgd + pgd_index_l5_4k(vaddr);
FILL_PGD(pgd, KVADDR, PAGESIZE());
--
2.34.1