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[Qemu-devel] [PATCH] phys_page_find_alloc: Use correct initial region_of
From: |
Alex_Rozenman |
Subject: |
[Qemu-devel] [PATCH] phys_page_find_alloc: Use correct initial region_offset. |
Date: |
Tue, 13 Dec 2011 12:52:08 +0200 |
From: Alex Rozenman <address@hidden>
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 <address@hidden>
---
exec.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/exec.c b/exec.c
index d8b2180..14628d9 100644
--- a/exec.c
+++ b/exec.c
@@ -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;
}
}
--
1.7.8
- [Qemu-devel] [PATCH] phys_page_find_alloc: Use correct initial region_offset.,
Alex_Rozenman <=