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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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 /** @addtogroup xen32mm
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/** @addtogroup xen32mm
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 * @{
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 * @{
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 */
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 */
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/** @file
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/** @file
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 */
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 */
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#include <print.h>
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#include <print.h>
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#include <interrupt.h>
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#include <interrupt.h>
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void page_arch_init(void)
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void page_arch_init(void)
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{
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{
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    uintptr_t cur;
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    int flags;
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    if (config.cpu_active == 1) {
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    if (config.cpu_active == 1) {
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        page_mapping_operations = &pt_mapping_operations;
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        page_mapping_operations = &pt_mapping_operations;
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        /*
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         * PA2KA(identity) mapping for all frames until last_frame.
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         */
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        for (cur = 0; cur < last_frame; cur += FRAME_SIZE) {
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            flags = PAGE_CACHEABLE;
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            if ((PA2KA(cur) >= config.base) && (PA2KA(cur) < config.base + config.kernel_size))
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                flags |= PAGE_GLOBAL;
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            page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags);
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        }
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        exc_register(14, "page_fault", (iroutine) page_fault);
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        AS_KERNEL->page_table = (pte_t *) KA2PA(start_info.ptl0);
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//      write_cr3((uintptr_t) AS_KERNEL->page_table);
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    }
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    else {
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    } else
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//      write_cr3((uintptr_t) AS_KERNEL->page_table);
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        SET_PTL0_ADDRESS_ARCH(AS_KERNEL->page_table);
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    }
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//  paging_on();
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}
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}
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void page_fault(int n, istate_t *istate)
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void page_fault(int n, istate_t *istate)
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{
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{
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    uintptr_t page;
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    uintptr_t page;