if (release) {
/* Make sure pfn exists to start with */
- if (mfn == INVALID_P2M_ENTRY || mfn_to_pfn(mfn) != pfn)
+ if (mfn == INVALID_P2M_ENTRY || (!xlated_phys && (mfn_to_pfn(mfn) != pfn)))
continue;
frame = mfn;
+ /* The hypercall PHYSDEVOP_map_iomem to release memory has already
+ * happend, so we just do a nop here. */
+ if (xlated_phys) {
+ len++;
+ continue;
+ }
} else {
if (!xlated_phys && mfn != INVALID_P2M_ENTRY)
continue;
{
unsigned long pfn;
+ /* For PVH, the pfns [0..MAX] are mapped to mfn's in the EPT/NPT. The mfns
+ * are released as part of this 1:1 mapping hypercall back to the dom heap.
+ * Also, we map the entire IO space, ie, beyond max_pfn_mapped.
+ */
+ int xlated_phys = xen_feature(XENFEAT_auto_translated_physmap);
+
/*
* If the PFNs are currently mapped, the VA mapping also needs
* to be updated to be 1:1.
*/
- for (pfn = start_pfn; pfn <= max_pfn_mapped && pfn < end_pfn; pfn++)
- (void)HYPERVISOR_update_va_mapping(
- (unsigned long)__va(pfn << PAGE_SHIFT),
- mfn_pte(pfn, PAGE_KERNEL_IO), 0);
-
+ for (pfn = start_pfn; pfn <= max_pfn_mapped && pfn < end_pfn; pfn++) {
+ if (xlated_phys)
+ xen_set_clr_mmio_pvh_pte(pfn, pfn, 1 /* one pfn */, 1 /* add mapping */);
+ else
+ (void)HYPERVISOR_update_va_mapping(
+ (unsigned long)__va(pfn << PAGE_SHIFT),
+ mfn_pte(pfn, PAGE_KERNEL_IO), 0);
+ }
if (start_pfn < nr_pages)
*released += xen_release_chunk(
start_pfn, min(end_pfn, nr_pages));
*identity += set_phys_range_identity(start_pfn, end_pfn);
}
-/* For PVH, the pfns [0..MAX] are mapped to mfn's in the EPT/NPT. The mfns
- * are released as part of this 1:1 mapping hypercall back to the dom heap.
- * Also, we map the entire IO space, ie, beyond max_pfn_mapped.
- */
-static void __init xen_pvh_identity_map_chunk(unsigned long start_pfn,
- unsigned long end_pfn, unsigned long *released,
- unsigned long *identity, unsigned long max_pfn)
-{
- unsigned long pfn;
- int numpfns = 1, add_mapping = 1;
-
- for (pfn = start_pfn; pfn < end_pfn; pfn++)
- xen_set_clr_mmio_pvh_pte(pfn, pfn, numpfns, add_mapping);
-
- if (start_pfn <= max_pfn) {
- unsigned long end = min(max_pfn_mapped, end_pfn);
- *released += end - start_pfn;
- }
- *identity += end_pfn - start_pfn;
-}
-
static unsigned long __init xen_set_identity_and_release(
const struct e820entry *list, size_t map_size, unsigned long nr_pages)
{
unsigned long identity = 0;
const struct e820entry *entry;
int i;
- int xlated_phys = xen_feature(XENFEAT_auto_translated_physmap);
/*
* Combine non-RAM regions and gaps until a RAM region (or the
if (entry->type == E820_RAM)
end_pfn = PFN_UP(entry->addr);
- if (start_pfn < end_pfn) {
- if (xlated_phys) {
- xen_pvh_identity_map_chunk(start_pfn,
- end_pfn, &released, &identity,
- nr_pages);
- } else {
- xen_set_identity_and_release_chunk(
+ if (start_pfn < end_pfn)
+ xen_set_identity_and_release_chunk(
start_pfn, end_pfn, nr_pages,
&released, &identity);
- }
- }
start = end;
}
}