On Tue, May 04, 2010 at 01:03:50PM +0300, Avi Kivity wrote: > On svm, kvm_read_pdptr() may require reading guest memory, which can sleep. > > Push the spinlock into mmu_alloc_roots(), and only take it after we've read > the pdptr. > > Signed-off-by: Avi Kivity <avi@xxxxxxxxxx> > --- > > Marcelo, dropping and re-acquiring the lock before mmu_sync_roots(), is fine, > yes? Yes, but you should call kvm_mmu_free_some_pages after reacquiring the spin_lock, to guarantee kvm_mmu_alloc_page won't fail. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
