On 19.06.2017 11:39, Alexander Graf wrote: > On 06/15/2017 03:33 PM, Peter Maydell wrote: >> I've just noticed that on a SPARC host, some of the PPC guests >> warn during make check: >> >> /ppc64/prom-env/pseries: >> qemu-system-ppc64: System page size 0x2000 is not enabled in >> page_size_mask (0x11000). Performance may be slow >> >> Is this really a performance problem on a TCG guest? >> It makes the 'make check' output a bit noisy, but not >> unbearably so. > > From what I can tell this really only affects DDW which should be page > size agnostic when only using emulated devices. Maybe Alexey thought of > using VFIO-pci devices in a TCG guest?
Maybe we could at least silence the warning by checking qtest_enabled()? Thomas
