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Index: sys/amd64/amd64/pmap.c
===================================================================
--- sys/amd64/amd64/pmap.c
+++ sys/amd64/amd64/pmap.c
@@ -1434,6 +1434,9 @@
sched_unpin();
}
+/* 512 PTEs */
+#define PMAP_INVLPG_THRESHOLD (512 * PAGE_SIZE)
+
void
pmap_invalidate_range(pmap_t pmap, vm_offset_t sva, vm_offset_t eva)
{
@@ -1441,6 +1444,11 @@
vm_offset_t addr;
u_int cpuid, i;
+ if (eva - sva >= PMAP_INVLPG_THRESHOLD) {
+ pmap_invalidate_all(pmap);
+ return;
+ }
+
if (pmap_type_guest(pmap)) {
pmap_invalidate_ept(pmap);
return;
Index: sys/i386/i386/pmap.c
===================================================================
--- sys/i386/i386/pmap.c
+++ sys/i386/i386/pmap.c
@@ -1016,6 +1016,9 @@
sched_unpin();
}
+/* 512 PTEs */
+#define PMAP_INVLPG_THRESHOLD (512 * PAGE_SIZE)
+
void
pmap_invalidate_range(pmap_t pmap, vm_offset_t sva, vm_offset_t eva)
{
@@ -1023,6 +1026,11 @@
vm_offset_t addr;
u_int cpuid;
+ if (eva - sva >= PMAP_INVLPG_THRESHOLD) {
+ pmap_invalidate_all(pmap);
+ return;
+ }
+
sched_pin();
if (pmap == kernel_pmap || !CPU_CMP(&pmap->pm_active, &all_cpus)) {
for (addr = sva; addr < eva; addr += PAGE_SIZE)

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