On Fri, Mar 29, 2019 at 04:43:26PM +1100, Alexey Kardashevskiy wrote: > We already allocate hardware TCE tables in multiple levels and skip > intermediate levels when we can, now it is a turn of the KVM TCE tables. > Thankfully these are allocated already in 2 levels. > > This moves the table's last level allocation from the creating helper to > kvmppc_tce_put() and kvm_spapr_tce_fault(). Since such allocation cannot > be done in real mode, this creates a virtual mode version of > kvmppc_tce_put() which handles allocations. > > This adds kvmppc_rm_ioba_validate() to do an additional test if > the consequent kvmppc_tce_put() needs a page which has not been allocated; > if this is the case, we bail out to virtual mode handlers. > > The allocations are protected by a new mutex as kvm->lock is not suitable > for the task because the fault handler is called with the mmap_sem held > but kvmhv_setup_mmu() locks kvm->lock and mmap_sem in the reverse order. > > Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx> Thanks, patch applied to my kvm-ppc-next tree. Paul.
