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Marvin
2026-10-06 01:34:24 +02:00
parent 134343d2a8
commit f8eb4f4e54
28 changed files with 166 additions and 36 deletions
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core/mem/vma.c
+3 -4
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@@ -60,7 +60,7 @@ static struct vma_mapping* find_mapping(struct vma* v, size_t page) {
return nullptr;
}
static bool access_allowed(enum prot_flags prot, const struct vma_fault_info* info) {
static bool can_access(enum prot_flags prot, const struct vma_fault_info* info) {
if (info->caused_by_write)
return prot & PROT_WRITE;
if (info->caused_by_fetch)
@@ -87,7 +87,7 @@ bool vma_page_fault(struct vma* v, const struct vma_fault_info* info) {
spin_lock(&v->lock);
struct vma_mapping* mapping = find_mapping(v, faulty_page);
if (!mapping || !access_allowed(mapping->prot, info)) {
if (!mapping || !can_access(mapping->prot, info)) {
spin_unlock(&v->lock);
return false;
}
@@ -107,8 +107,7 @@ bool vma_page_fault(struct vma* v, const struct vma_fault_info* info) {
spin_lock(&v->lock);
mapping = find_mapping(v, faulty_page);
const bool still_valid = mapping && mapping->object == object &&
(faulty_page - mapping->start_page) + mapping->offset_page == object_page &&
access_allowed(mapping->prot, info);
(faulty_page - mapping->start_page) + mapping->offset_page == object_page && can_access(mapping->prot, info);
if (still_valid) {
errno_t status =