On 05/11/2011 04:08 PM, Jan Kiszka wrote:
On 2011-05-11 13:25, Avi Kivity wrote: > On 05/09/2011 06:48 PM, Alex Williamson wrote: >>> That's an interesting trace! We'll check this here, but I bet it >>> contributes to the problems. Our FX 3800 has 1G memory... >> >> Yes, qemu leaves far too little MMIO space to think about assigning >> graphics cards. Both of my cards have 512MB and I hacked qemu to leave >> a bigger gap via something like: >> > > What about 64-bit BARs? Aren't they backward compatible? Or do you think some guest drivers may assume to find their 64-bit capable bars also registered as such and get upset when seeing them as 32-bit ones?
I mean, if you have a 1GB framebuffer, put it above 4GB and hope the OS/driver can handle it.
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