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Date: Tue, 01 Dec 2009 10:17:01 +0100
From: Carsten Otte <carsteno@de.ibm.com>
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Subject: Re: [Qemu-devel] [PATCH 06/11] Add support for S390x system emulation
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To: Aurelien Jarno <aurelien@aurel32.net>
Cc: Carsten Otte <cotte@de.ibm.com>, Alexander Graf <agraf@suse.de>, qemu-devel@nongnu.org

Aurelien Jarno wrote:
>> +static inline int cpu_mmu_index (CPUState *env)
>> +{
>> +    /* XXX: Currently we don't implement virtual memory */
>> +    return 0;
> 
> Is it correct? It means that memory access will aways be kernel memory
> accesses. IIRC, even with KVM enabled, softmmu accesses are possible in
> some cases (devices ?).
On s390, we don't have memory mapped I/O. KVM is virtio only, and even 
if we would add channel devices we would not require softmmu emulation 
here. S390 does'nt have pci, usb or alike.