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feat: set accessed bit to allocated frames in page_load and get_usr_kpage

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EDiasAlberto
2024-12-05 01:41:23 +00:00
parent f06c91cf0d
commit ac31fb1e1e
2 changed files with 4 additions and 1 deletions
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1
src/userprog/process.c
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@@ -811,6 +811,7 @@ get_usr_kpage (enum palloc_flags flags, void *upage)
return NULL; return NULL;
else else
page = frame_alloc (flags, upage, t); page = frame_alloc (flags, upage, t);
pagedir_set_accessed (t->pagedir, upage, true);
#else #else
page = palloc_get_page (flags | PAL_USER); page = palloc_get_page (flags | PAL_USER);
#endif #endif

4
src/vm/page.c
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@@ -77,7 +77,9 @@ page_load (struct page_entry *page, bool writable)
/* Allocate a frame for the page. If a frame allocation fails, then /* Allocate a frame for the page. If a frame allocation fails, then
frame_alloc should try to evict a page. If it is still NULL, the OS frame_alloc should try to evict a page. If it is still NULL, the OS
panics as this should not happen if eviction is working correctly. */ panics as this should not happen if eviction is working correctly. */
void *frame = frame_alloc (0, page->upage, thread_current ()); struct thread *t = thread_current ();
void *frame = frame_alloc (0, page->upage, t);
pagedir_set_accessed (t->pagedir, page->upage, true);
if (frame == NULL) if (frame == NULL)
PANIC ("Could not allocate a frame to load page into memory."); PANIC ("Could not allocate a frame to load page into memory.");