(this is the modification for qemu to make it work with ksm)
--
woof.
>From 813266c7d59acb64c104448c255cc2c9d4f0187e Mon Sep 17 00:00:00 2001
From: Izik Eidus <[EMAIL PROTECTED]>
Date: Mon, 21 Jan 2008 17:41:09 +0200
Subject: [PATCH] qemu: register the memory of qemu with ksm,
so it can be shared
Signed-off-by: Izik Eidus <[EMAIL PROTECTED]>
---
qemu/vl.c | 35 +++++++++++++++++++++++++++++++++++
1 files changed, 35 insertions(+), 0 deletions(-)
diff --git a/qemu/vl.c b/qemu/vl.c
index 756e13d..691db36 100644
--- a/qemu/vl.c
+++ b/qemu/vl.c
@@ -21,6 +21,8 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
+
+#include "ksm.h"
#include "hw/hw.h"
#include "hw/boards.h"
#include "hw/usb.h"
@@ -8501,6 +8503,37 @@ void qemu_get_launch_info(int *argc, char ***argv, int *opt_daemonize, const cha
*opt_incoming = incoming;
}
+int ksm_register_memory(void)
+{
+ int fd;
+ int ksm_fd;
+ int r = 1;
+ struct ksm_memory_region ksm_region;
+
+ fd = open("/dev/ksm", O_RDWR | O_TRUNC, (mode_t)0600);
+ if (fd == -1)
+ goto out;
+
+ ksm_fd = ioctl(fd, KSM_CREATE_SHARED_MEMORY_AREA);
+ if (ksm_fd == -1)
+ goto out_free;
+
+ ksm_region.npages = phys_ram_size / TARGET_PAGE_SIZE;
+ ksm_region.addr = phys_ram_base;
+ r = ioctl(ksm_fd, KSM_REGISTER_MEMORY_REGION, &ksm_region);
+ if (r)
+ goto out_free1;
+
+ return r;
+
+out_free1:
+ close(ksm_fd);
+out_free:
+ close(fd);
+out:
+ return r;
+}
+
int main(int argc, char **argv)
{
#ifdef CONFIG_GDBSTUB
@@ -9353,6 +9386,8 @@ int main(int argc, char **argv)
}
#endif
+ ksm_register_memory();
+
bdrv_init();
/* we always create the cdrom drive, even if no disk is there */
--
1.5.3.6
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