Re: [PATCH 4/5] powerpc: Cleanup KVM emulated load/store endian handling

[Alexander Graf]

On 03.02.15 06:36, David Gibson wrote:
> Sometimes the KVM code on powerpc needs to emulate load or store
> instructions from the guest, which can include both normal and byte
> reversed forms.
> 
> We currently (AFAICT) handle this correctly, but some variable names are
> very misleading.  In particular we use "is_bigendian" in several places to
> actually mean "is the IO the same endian as the host", but we now support
> little-endian powerpc hosts.  This also ties into the misleadingly named
> ld_le*() and st_le*() functions, which in fact always byteswap, even on
> an LE host.
> 
> This patch cleans this up by renaming to more accurate "host_swabbed", and
> uses the generic swab*() functions instead of the powerpc specific and
> misleadingly named ld_le*() and st_le*() functions.
> 
> Signed-off-by: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>

Reviewed-by: Alexander Graf <agraf@xxxxxxx>


Alex
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