Re: [PATCH v1] s390x/tcg: fix and optimize SPX (SET PREFIX)

[Cornelia Huck]

On Thu, Aug 05 2021, David Hildenbrand <david@redhat.com> wrote:

> We not only invalidate the translation of the range 0x0-0x2000, we also
> invalidate the translation of the new prefix range and the translation
> of the old prefix range -- because real2abs would return different
> results for all of these ranges when changing the prefix location.
>
> This fixes the kvm-unit-tests "edat" test that just hangs before this
> patch because we end up clearing the new prefix area instead of the old
> prefix area.
>
> While at it, let's not do anything in case the prefix doesn't change.
>
> Cc: Richard Henderson <richard.henderson@linaro.org>
> Cc: David Hildenbrand <david@redhat.com>
> Cc: Cornelia Huck <cohuck@redhat.com>
> Cc: Thomas Huth <thuth@redhat.com>
> Cc: Claudio Imbrenda <imbrenda@linux.ibm.com>
> Cc: qemu-s390x@nongnu.org
> Signed-off-by: David Hildenbrand <david@redhat.com>
> ---
>  target/s390x/tcg/misc_helper.c | 15 ++++++++++++++-
>  1 file changed, 14 insertions(+), 1 deletion(-)

Thanks, applied.