On Mon, Nov 17, 2014 at 5:29 PM, Zhang Haoyu <zhan...@sangfor.com> wrote: >> Hi, >> >> I saw this page: >> >> http://www.linux-kvm.org/page/Migration. >> >> It looks like Migration is a feature provided by KVM? But when I look >> at the Linux kernel source code, i.e., virt/kvm, and arch/x86/kvm, I >> don't see the code for this migration feature. >> > Most of live migration code is in qemu migration.c, savevm.c, arch_init.c, > block-migration.c, and the other devices's save/load handler, .etc, > only log/sync dirty page implemented in kernel. > You can read the most important function migration_thread(), > process_incoming_migration_co(). > Great, thanks Haoyu! I will try to understand these parts of code first.
-Jidong >> So I wonder where is the source code for the live migration? Is it >>purely implemented in user space? Because I see there are the >> following files in the qemu source code: >> >> migration.c migration-exec.c migration-fd.c migration-rdma.c >> migration-tcp.c migration-unix.c >> >> If I wish to understand the implementation of migration in Qemu/KVM, >> are these above files the ones I should read? Thanks. >> >> -Jidong >
