On 2012-03-15 19:12, Marek Vasut wrote: > Dear Marek Vasut, > >> Dear Jan Kiszka, >> >>> On 2012-03-10 07:19, Marek Vasut wrote: >>>> Dear Jan Kiszka, >>>> >>>>> We flush coalesced MMIO in the device models now, and VNC - for which >>>>> this was once introduced - is also fine without it as it has its own >>>>> refresh timer. >>>>> >>>>> Signed-off-by: Jan Kiszka <jan.kis...@siemens.com> >>>>> --- >>>>> >>>>> vl.c | 13 ------------- >>>>> 1 files changed, 0 insertions(+), 13 deletions(-) >>>> >>>> This patch seems to break QEMU/PXA emulation for me on the ZipitZ2 >>>> platform. The serial console became very slow, but only when I type >>>> something in. The output from the device to the console is ok. After >>>> reverting this particular one, the console behaves normally. >>> >>> Removing that timer removal likely just revealed some formerly hidden >>> bug. Can you share the command line used for starting and some test >>> image? >>> >>> Jan >> >> qemu-system-arm -M z2 -pflash flash.img -serial null -serial null -serial >> stdio -display none >> >> flash.img attached (XZ-ed) >> > > Bump?
I had a brief look: The guest is apparently polling the uart, IRQ delivery is disabled. But it also receives no timer ticks. I haven't checked how it progresses, maybe there is some loop counter used. What's the origin of this test image? Have you checked it works properly on real silicon? I do not know how this platform looks like in reality, how it should behave and should be programmed (by the guest), so I really can't compare and analyze, sorry. Jan
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