With the single exception of ppc with 16M pages,
we get the same number of levels
with L2_PAGE_SIZE = 10 as with L2_PAGE_SIZE = 9.
by doing this we reduce memory footprint of a single level
in the node memory map by 2x without runtime overhead.
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
---
exec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/exec.c b/exec.c
index 6e64d27..7d3f743 100644
--- a/exec.c
+++ b/exec.c
@@ -96,7 +96,7 @@ struct PhysPageEntry {
/* Size of the L2 (and L3, etc) page tables. */
#define ADDR_SPACE_BITS 64
-#define P_L2_BITS 10
+#define P_L2_BITS 9
#define P_L2_SIZE (1 << P_L2_BITS)
#define P_L2_LEVELS (((ADDR_SPACE_BITS - TARGET_PAGE_BITS - 1) / P_L2_BITS) +
1)
--
MST
