Am 27.06.2010 um 10:22 schrieb Avi Kivity [off-list ref]:

On 06/26/2010 02:24 AM, Alexander Graf wrote:

quoted

While running in hooked code we need to store register contents out  
because
we must not clobber any registers.

So let's add some fields to the shared page we can just happily  
write to.

How are these protected during interrupts?

By the 'critical section' bit. When in a critical section (read: using  
scratch registers), we don't issue interrupts.

Alex