Re: [Qemu-devel] [PATCH 7/7] KVM regsync: Fix do_kvm_cpu_synchronize_state data integrity issue

["Jason J. Herne" <jjherne@linux.vnet.ibm.com>]

If I've followed the conversation correctly this is what needs to be done:

1. Remove the level parameters from kvm_arch_get_registers and 
kvm_arch_put_registers.

2. Add a new bitmap parameter to kvm_arch_get_registers and 
kvm_arch_put_registers.

3. Define a bit that correlates to our current notion of "all runtime 
registers".  This bit, and all bits in this bitmap, would be 
architecture specific.

4. Remove the cpustate->kvm_sync_dirty field.  Replace it with a bitmap 
that tracks which bits are dirty and need to be synced back to KVM-land.

5. As we do today, we'll assume registers are dirty and turn on their 
corresponding bit in this new bitmap whenever we "get" the registers 
from KVM.

6. Add other bits as needed on a case by case basis.

Does this seem to match what was discussed, and what we want to do?


-- 
-- Jason J. Herne (jjherne@linux.vnet.ibm.com)