From patchwork Thu Oct 8 14:39:39 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: ksm support Date: Thu, 08 Oct 2009 04:39:39 -0000 From: Izik Eidus X-Patchwork-Id: 35447 Message-Id: <4ACDF9AB.6040600@redhat.com> To: qemu-devel@nongnu.org Attached patch add ksm support (below is inline version) From cd20e52d0542b5f8716333b8abfcb8112684502b Mon Sep 17 00:00:00 2001 From: Izik Eidus Date: Thu, 8 Oct 2009 16:31:18 +0200 Subject: [PATCH] qemu ksm support call MADV_MERGEABLE on guest memory allocations. Signed-off-by: Izik Eidus --- exec.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/exec.c b/exec.c index d9be575..076d26b 100644 --- a/exec.c +++ b/exec.c @@ -2412,6 +2412,9 @@ ram_addr_t qemu_ram_alloc(ram_addr_t size) new_block = qemu_malloc(sizeof(*new_block)); new_block->host = qemu_vmalloc(size); +#ifdef MADV_MERGEABLE + madvise(new_block->host, size, MADV_MERGEABLE); +#endif new_block->offset = last_ram_offset; new_block->length = size;