• Implement and use a common device bus state.  The main side-effect is
    that creating a bus and attaching it to a parent device are no longer
    separate operations.  For legacy code we allow a NULL parent, but that
    should go away eventually.
    
    Also tweak creation code to veriry theat a device in on the right bus.
    
    Signed-off-by: Paul Brook <paul@codesourcery.com>
    Paul Brook authored
     
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  • Add the parameter 'order' to qemu_register_reset and sort callbacks on
    registration. On system reset, callbacks with lower order will be
    invoked before those with higher order. Update all existing users to the
    standard order 0.
    
    Note: At least for x86, the existing users seem to assume that handlers
    are called in their registration order. Therefore, the patch preserves
    this property. If someone feels bored, (s)he could try to identify this
    dependency and express it properly on callback registration.
    
    Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
    Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
    Jan Kiszka authored
     
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  • 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
    testing.
    
    Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
    
    
    
    git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5627 c046a42c-6fe2-441c-8c8c-71466251a162
    aliguori authored
     
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