• David Gibson's avatar
    powerpc: Cleanup KVM emulated load/store endian handling · d078eed3
    David Gibson authored
    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: default avatarDavid Gibson <david@gibson.dropbear.id.au>
    Reviewed-by: default avatarAlexander Graf <agraf@suse.de>
    Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
    d078eed3
kvm_host.h 15.9 KB