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riscv: fix vm.pmap.kernel_maps with Sv48

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With 4-level paging enabled, the layout of KVA is identical, but we need
to step through an extra level to find the L1 table.

Reviewed by:	markj
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D45473
This commit is contained in:
Mitchell Horne 2024-06-04 20:18:54 -03:00
parent 191bf63da2
commit 65a33120c3
1 changed files with 3 additions and 2 deletions
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5
sys/riscv/riscv/pmap.c
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@ -5017,7 +5017,7 @@ sysctl_kmaps(SYSCTL_HANDLER_ARGS)
{
struct pmap_kernel_map_range range;
struct sbuf sbuf, *sb;
pd_entry_t l1e, *l2, l2e;
pd_entry_t *l1, l1e, *l2, l2e;
pt_entry_t *l3, l3e;
vm_offset_t sva;
vm_paddr_t pa;
@ -5044,7 +5044,8 @@ sysctl_kmaps(SYSCTL_HANDLER_ARGS)
else if (i == pmap_l1_index(VM_MIN_KERNEL_ADDRESS))
sbuf_printf(sb, "\nKernel map:\n");
l1e = kernel_pmap->pm_top[i];
l1 = pmap_l1(kernel_pmap, sva);
l1e = pmap_load(l1);
if ((l1e & PTE_V) == 0) {
sysctl_kmaps_dump(sb, &range, sva);
sva += L1_SIZE;