On Sun, 20 Sep 2020 at 08:56, Paolo Bonzini <pbonz...@redhat.com> wrote: > > On 08/09/20 18:41, Li Qiang wrote: > > Currently the qemu device fuzzer find some DMA to MMIO issue. If the > > device handling MMIO currently trigger a DMA which the address is MMIO, > > this will reenter the device MMIO handler. As some of the device doesn't > > consider this it will sometimes crash the qemu.
> I don't think this is a good solution. These are device bugs and they > need to be fixed. Do you have an opinion on what the right approach to fixing them is? It seems like a hard problem to me; my brain has been too full of cotton wool recently and I haven't felt up to sitting down and trying to think through whether there's a clean way to handle the reentrancy-into-device-code problem in the general case... thanks -- PMM
