From: Izik Eidus <iei...@redhat.com> Call madvise(MADV_MERGEABLE) on the memory allocations to allow the kernel to merge them.
Signed-off-by: Izik Eidus <iei...@redhat.com> Signed-off-by: Avi Kivity <a...@redhat.com> diff --git a/exec.c b/exec.c index 5c9edf7..406d2cb 100644 --- a/exec.c +++ b/exec.c @@ -2538,6 +2538,9 @@ ram_addr_t qemu_ram_alloc(ram_addr_t size) new_block->host = file_ram_alloc(size, mem_path); if (!new_block->host) { 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; -- To unsubscribe from this list: send the line "unsubscribe kvm-commits" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html