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yreluA-J4Yb8BbYmomrU63yeucCDhyZo Content-Transfer-Encoding: quoted-printable X-Proofpoint-UnRewURL: 0 URL was un-rewritten Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-18_08,2024-01-17_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 mlxscore=0 spamscore=0 impostorscore=0 priorityscore=1501 phishscore=0 suspectscore=0 adultscore=0 bulkscore=0 clxscore=1015 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2401180116 On Thu, 2024-01-18 at 10:00 -0400, Jason Gunthorpe wrote: > On Thu, Jan 18, 2024 at 02:46:40PM +0100, Niklas Schnelle wrote: >=20 > > Yes, we need zpci_memcpy_toio(to, from, count * 8) since our count is > > in bytes like for memcpy_toio(). >=20 > https://github.com/jgunthorpe/linux/commits/mlx5_wc/ >=20 > Jason >=20 Thanks, the s390 patches: s390: Implement __iowrite32_copy()=20 s390: Use the correct count for __iowrite64_copy()=20 s390: Stop using weak symbols for __iowrite64_copy()=20 Look good to me. I.e. you may add my. Acked-by Niklas Schnelle I did test your patches too and by accident confirmed again that these do need commit 80df7d6af7f6 ("s390/pci: fix max size calculation in zpci_memcpy_toio()") from the s390 feature branch to get the mlx5 driver to detect Write-Combining as supported. Note, as far as I know Alexander Gordeev is targeting that one for v6.8-rc2 since we had quite a few changes for v6.8-rc1. Thanks, Niklas