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Re: [Qemu-ppc] KVM and variable-endianness guest CPUs
From: |
Benjamin Herrenschmidt |
Subject: |
Re: [Qemu-ppc] KVM and variable-endianness guest CPUs |
Date: |
Tue, 28 Jan 2014 11:36:13 +1100 |
On Mon, 2014-01-27 at 23:49 +0000, Peter Maydell wrote:
>
> Er, what? If we make the array be guest's current order
> then by definition userspace has to look at the guest's
> current endianness. I agree that would be bad. Either
> of the two current proposals (host kernel order; guest
> CPU's native/natural/default-byte-order) avoid it, though.
No, this has nothing to do with the guest endianness, and
all to do about the (hopefully) byte-address invariant bus we have
on the processor.
Anyway, the existing crap is ABI so I suspect we have to stick with it,
just maybe document it better.
Ben.
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs, (continued)
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs, Benjamin Herrenschmidt, 2014/01/27
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs, Victor Kamensky, 2014/01/23
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs, Benjamin Herrenschmidt, 2014/01/27
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs, Benjamin Herrenschmidt, 2014/01/27
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs, Benjamin Herrenschmidt, 2014/01/27
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs, Peter Maydell, 2014/01/27
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs,
Benjamin Herrenschmidt <=
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs, Christoffer Dall, 2014/01/27
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs, Benjamin Herrenschmidt, 2014/01/27
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs, Christoffer Dall, 2014/01/28
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs, Benjamin Herrenschmidt, 2014/01/27
- Re: [Qemu-ppc] KVM and variable-endianness guest CPUs, Benjamin Herrenschmidt, 2014/01/27
- Re: [Qemu-ppc] [Qemu-devel] KVM and variable-endianness guest CPUs, Avi Kivity, 2014/01/28
- Re: [Qemu-ppc] [Qemu-devel] KVM and variable-endianness guest CPUs, Avi Kivity, 2014/01/28