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Initialize physical memory space to IO_MEM_UNASSIGNED.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1801 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2006-04-08 20:02:06 +00:00
parent 706cd4b547
commit e3f4e2a4b0
1 changed files with 9 additions and 6 deletions
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15
exec.c
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@ -204,6 +204,7 @@ static inline PageDesc *page_find(unsigned int index)
static PhysPageDesc *phys_page_find_alloc(target_phys_addr_t index, int alloc) static PhysPageDesc *phys_page_find_alloc(target_phys_addr_t index, int alloc)
{ {
void **lp, **p; void **lp, **p;
PhysPageDesc *pd;
p = (void **)l1_phys_map; p = (void **)l1_phys_map;
#if TARGET_PHYS_ADDR_SPACE_BITS > 32 #if TARGET_PHYS_ADDR_SPACE_BITS > 32
@ -223,16 +224,18 @@ static PhysPageDesc *phys_page_find_alloc(target_phys_addr_t index, int alloc)
} }
#endif #endif
lp = p + ((index >> L2_BITS) & (L1_SIZE - 1)); lp = p + ((index >> L2_BITS) & (L1_SIZE - 1));
p = *lp; pd = *lp;
if (!p) { if (!pd) {
int i;
/* allocate if not found */ /* allocate if not found */
if (!alloc) if (!alloc)
return NULL; return NULL;
p = qemu_vmalloc(sizeof(PhysPageDesc) * L2_SIZE); pd = qemu_vmalloc(sizeof(PhysPageDesc) * L2_SIZE);
memset(p, 0, sizeof(PhysPageDesc) * L2_SIZE); *lp = pd;
*lp = p; for (i = 0; i < L2_SIZE; i++)
pd[i].phys_offset = IO_MEM_UNASSIGNED;
} }
return ((PhysPageDesc *)p) + (index & (L2_SIZE - 1)); return ((PhysPageDesc *)pd) + (index & (L2_SIZE - 1));
} }
static inline PhysPageDesc *phys_page_find(target_phys_addr_t index) static inline PhysPageDesc *phys_page_find(target_phys_addr_t index)