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phys_page_find_alloc: Use correct initial region_offset.

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This fixes a common bug with initial region_offset value.
Usually, the pages are re-assigned afterwards, so the bug
has a very small effect on regular QEMU use flows.

Signed-off-by: Alex Rozenman <Alex_Rozenman@mentor.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Alex Rozenman 2011-12-13 12:52:08 +02:00 committed by Anthony Liguori
parent 885660bd48
commit 5ab97b7f81
1 changed files with 2 additions and 1 deletions
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3
exec.c
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@ -418,6 +418,7 @@ static PhysPageDesc *phys_page_find_alloc(target_phys_addr_t index, int alloc)
pd = *lp;
if (pd == NULL) {
int i;
int first_index = index & ~(L2_SIZE - 1);
if (!alloc) {
return NULL;
@ -427,7 +428,7 @@ static PhysPageDesc *phys_page_find_alloc(target_phys_addr_t index, int alloc)
for (i = 0; i < L2_SIZE; i++) {
pd[i].phys_offset = IO_MEM_UNASSIGNED;
pd[i].region_offset = (index + i) << TARGET_PAGE_BITS;
pd[i].region_offset = (first_index + i) << TARGET_PAGE_BITS;
}
}