hwvm.hh

cf624484 · Nickolai Zeldovich · 044966c8 · cf624484
--- a/hwvm.hh
+++ b/hwvm.hh
+#pragma once
+
+#include "atomic.hh"
+
+struct pgmap {
+  std::atomic<pme_t> e[PGSIZE / sizeof(pme_t)];
+};
+
+extern pgmap kpml4;
+
+void            freevm(pgmap *pml4);
+pgmap*          setupkvm(void);
+int             setupkshared(pgmap *pml4, char *kshared);
+std::atomic<pme_t>* walkpgdir(pgmap *pml4, u64, int);
+void            tlbflush(void);
+
+template<class CB>
+void
+updatepages(pgmap *pml4, u64 begin, u64 end, CB cb)
+{
+  for (u64 a = PGROUNDDOWN(begin); a != PGROUNDUP(end); a += PGSIZE) {
+    std::atomic<pme_t> *pte = walkpgdir(pml4, a, 1);
+    cb(pte);
+  }
+}