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Re: [Qemu-devel] [PATCH RFC 04/11] s390/qemu: cpu model cpu facilitiy su


From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH RFC 04/11] s390/qemu: cpu model cpu facilitiy support
Date: Tue, 15 Oct 2013 15:46:57 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.0

On 10/07/2013 03:47 AM, Michael Mueller wrote:
> A second reason for using 2k of memory here is to fully represent the 
> facilities as defined
> in the s390x architecture. The SIE state needs it and I want to represent it 
> identically in user
> space and KVM. Otherwise I would need a specific interface just for the 
> facilities.

If KVM needs the data in the format that you've got it in now, that's fair 
enough.

Otherwise, 128 bits per s390 system seems nicer than 32 bits per facility.


r~



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