Re: [Qemu-devel] race between kvm-kmod-3.0 and kvm-kmod-3.3 // was: race condition in qemu-kvm-1.0.1

[Avi Kivity]

On 06/28/2012 12:38 PM, Peter Lieven wrote:
> does anyone know whats that here in handle_mmio?
> 
>     /* hack: Red Hat 7.1 generates these weird accesses. */
>     if ((addr > 0xa0000-4 && addr <= 0xa0000) && kvm_run->mmio.len == 3)
>         return 0;
> 

Just what it says.  There is a 4-byte access to address 0x9ffff.  The
first byte lies in RAM, the next three bytes are in mmio.  qemu is
geared to power-of-two accesses even though x86 can generate accesses to
any number of bytes between 1 and 8.

It appears that this has happened with your guest.  It's not impossible
that it's genuine.

-- 
error compiling committee.c: too many arguments to function