The stage-2 and hyp stage-1 map walkers install new page tables during
their traversal. In order to support parallel table walks, make callers
return the next table to traverse.
Signed-off-by: Oliver Upton <oupton@xxxxxxxxxx>
---
arch/arm64/kvm/hyp/pgtable.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c
index ad911cd44425..5b64fbca8a93 100644
--- a/arch/arm64/kvm/hyp/pgtable.c
+++ b/arch/arm64/kvm/hyp/pgtable.c
@@ -205,13 +205,12 @@ static inline int __kvm_pgtable_visit(struct kvm_pgtable_walk_data *data,
if (!table && (flags & KVM_PGTABLE_WALK_LEAF)) {
ret = kvm_pgtable_visitor_cb(data, addr, level, ptep, &pte,
KVM_PGTABLE_WALK_LEAF);
- pte = *ptep;
- table = kvm_pte_table(pte, level);
}
if (ret)
goto out;
+ table = kvm_pte_table(pte, level);
if (!table) {
data->addr = ALIGN_DOWN(data->addr, kvm_granule_size(level));
data->addr += kvm_granule_size(level);
@@ -429,6 +428,7 @@ static int hyp_map_walker(u64 addr, u64 end, u32 level, kvm_pte_t *ptep, kvm_pte
kvm_set_table_pte(ptep, childp, mm_ops);
mm_ops->get_page(ptep);
+ *old = *ptep;
return 0;
}
@@ -828,7 +828,7 @@ static int stage2_map_walk_leaf(u64 addr, u64 end, u32 level, kvm_pte_t *ptep,
kvm_set_table_pte(ptep, childp, mm_ops);
mm_ops->get_page(ptep);
-
+ *old = *ptep;
return 0;
}
--
2.36.0.rc0.470.gd361397f0d-goog
_______________________________________________
kvmarm mailing list
kvmarm@xxxxxxxxxxxxxxxxxxxxx
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
