WebSVN – HelenOS-historic – Diff – /kernel/trunk/genarch/src/mm/page_pt.c



    .mapping_find = pt_mapping_find
};
 
/** Map page to frame using hierarchical page tables.
 *
 * Map virtual address @page to physical address @frame
 * using @flags.
 *
 * The page table must be locked and interrupts must be disabled.
 *
 * @param as Address space to wich page belongs.
 * @param page Virtual address of the page to be mapped.

 *
 * Empty page tables except PTL0 are freed.
 *
 * The page table must be locked and interrupts must be disabled.
 *
 * @param as Address space to wich @page belongs.
 * @param page Virtual address of the page to be demapped.
 */
void pt_mapping_remove(as_t *as, __address page)
{
    pte_t *ptl0, *ptl1, *ptl2, *ptl3;

 *
 * Find mapping for virtual page.
 *
 * The page table must be locked and interrupts must be disabled.
 *
 * @param as Address space to which @page belongs.
 * @param page Virtual page.
 *
 * @return NULL if there is no such mapping; entry from PTL3 describing the mapping otherwise.
 */
pte_t *pt_mapping_find(as_t *as, __address page)

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/genarch/src/mm/page_pt.c – Rev 1044 → 1229

Rev 1044		Rev 1229
Line 47...		Line 47...
47	.mapping_find = pt_mapping_find	47	.mapping_find = pt_mapping_find
48	};	48	};
49		49
50	/** Map page to frame using hierarchical page tables.	50	/** Map page to frame using hierarchical page tables.
51	*	51	*
52	* Map virtual address 'page' to physical address 'frame'	52	* Map virtual address @page to physical address @frame
53	* using 'flags'.	53	* using @flags.
54	*	54	*
55	* The page table must be locked and interrupts must be disabled.	55	* The page table must be locked and interrupts must be disabled.
56	*	56	*
57	* @param as Address space to wich page belongs.	57	* @param as Address space to wich page belongs.
58	* @param page Virtual address of the page to be mapped.	58	* @param page Virtual address of the page to be mapped.
Line 105...		Line 105...
105	*	105	*
106	* Empty page tables except PTL0 are freed.	106	* Empty page tables except PTL0 are freed.
107	*	107	*
108	* The page table must be locked and interrupts must be disabled.	108	* The page table must be locked and interrupts must be disabled.
109	*	109	*
110	* @param as Address space to wich page belongs.	110	* @param as Address space to wich @page belongs.
111	* @param page Virtual address of the page to be demapped.	111	* @param page Virtual address of the page to be demapped.
112	*/	112	*/
113	void pt_mapping_remove(as_t *as, __address page)	113	void pt_mapping_remove(as_t *as, __address page)
114	{	114	{
115	pte_t ptl0, ptl1, ptl2, ptl3;	115	pte_t ptl0, ptl1, ptl2, ptl3;
Line 225...		Line 225...
225	*	225	*
226	* Find mapping for virtual page.	226	* Find mapping for virtual page.
227	*	227	*
228	* The page table must be locked and interrupts must be disabled.	228	* The page table must be locked and interrupts must be disabled.
229	*	229	*
230	* @param as Address space to which page belongs.	230	* @param as Address space to which @page belongs.
231	* @param page Virtual page.	231	* @param page Virtual page.
232	*	232	*
233	* @return NULL if there is no such mapping; entry from PTL3 describing the mapping otherwise.	233	* @return NULL if there is no such mapping; entry from PTL3 describing the mapping otherwise.
234	*/	234	*/
235	pte_t pt_mapping_find(as_t as, __address page)	235	pte_t pt_mapping_find(as_t as, __address page)