• aliguori's avatar
    Add KVM support to QEMU · 7ba1e619
    aliguori authored
    This patch adds very basic KVM support.  KVM is a kernel module for Linux that
    allows userspace programs to make use of hardware virtualization support.  It
    current supports x86 hardware virtualization using Intel VT-x or AMD-V.  It
    also supports IA64 VT-i, PPC 440, and S390.
    This patch only implements the bare minimum support to get a guest booting.  It
    has very little impact the rest of QEMU and attempts to integrate nicely with
    the rest of QEMU.
    Even though this implementation is basic, it is significantly faster than TCG.
    Booting and shutting down a Linux guest:
    w/TCG:  1:32.36 elapsed  84% CPU
    w/KVM:  0:31.14 elapsed  59% CPU
    Right now, KVM is disabled by default and must be explicitly enabled with
     -enable-kvm.  We can enable it by default later when we have had better
    Signed-off-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
    git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5627 c046a42c-6fe2-441c-8c8c-71466251a162
vl.c 166 KB