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fix: frame allocation now invalidates the victim process page directory, not the caller's

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Themis Demetriades
2024-12-04 16:41:13 +00:00
parent 1b73e415d7
commit fb73d694bf
1 changed files with 1 additions and 1 deletions
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src/vm/frame.c
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@@ -96,7 +96,7 @@ frame_alloc (enum palloc_flags flags, void *upage, struct thread *owner)
/* Mark page as 'not present' and flag the page directory as having /* Mark page as 'not present' and flag the page directory as having
been modified *before* eviction begins to prevent the owner of the been modified *before* eviction begins to prevent the owner of the
victim page from accessing/modifying it mid-eviction. */ victim page from accessing/modifying it mid-eviction. */
pagedir_clear_page (owner->pagedir, upage); pagedir_clear_page (victim->owner->pagedir, victim->upage);
// TODO: Lock PTE of victim page for victim process. // TODO: Lock PTE of victim page for victim process.