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- When looking up a mapping, check if pg entry is existing after all

This commit is contained in:
Jan Stoess 2008-01-11 11:08:47 +01:00
parent db2182491c
commit 19b08d006a
1 changed files with 3 additions and 1 deletions
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4
kernel/src/generic/linear_ptab_walker.cc
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@ -1,6 +1,6 @@
/*********************************************************************
*
* Copyright (C) 2002-2007, Karlsruhe University
* Copyright (C) 2002-2008, Karlsruhe University
*
* File path: generic/linear_ptab_walker.cc
* Description: Linear page table manipulation
@ -1052,6 +1052,8 @@ bool space_t::lookup_mapping (addr_t vaddr, pgent_t ** r_pg,
for (;;)
{
if (!pg)
return false;
if (pg->is_valid (this, pgsize))
{
if (pg->is_subtree (this, pgsize))