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Wed, 12 Feb 2025 14:47:30 +0000 (GMT) Message-ID: <307e2a67-e714-4fdd-b022-32a29ed6c6e9@linux.ibm.com> Date: Wed, 12 Feb 2025 08:47:30 -0600 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] vdpa: Allow vDPA to work on big-endian machine Content-Language: en-US To: Eugenio Perez Martin Cc: mst@redhat.com, sgarzare@redhat.com, mjrosato@linux.ibm.com, qemu-devel@nongnu.org References: <20250211161923.1477960-1-kshk@linux.ibm.com> From: Konstantin Shkolnyy In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: Iab19jELjXu7nXQ5_6ONfJPYA_uJBgwr X-Proofpoint-GUID: Iab19jELjXu7nXQ5_6ONfJPYA_uJBgwr X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-02-12_04,2025-02-11_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 impostorscore=0 mlxscore=0 adultscore=0 mlxlogscore=682 priorityscore=1501 bulkscore=0 lowpriorityscore=0 suspectscore=0 spamscore=0 phishscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2501170000 definitions=main-2502120111 Received-SPF: pass client-ip=148.163.156.1; envelope-from=kshk@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 2/12/2025 07:38, Eugenio Perez Martin wrote: > On Tue, Feb 11, 2025 at 5:20 PM Konstantin Shkolnyy wrote: >> >> Add .set_vnet_le() function that always returns success, assuming that >> vDPA h/w always implements LE data format. Otherwise, QEMU disables vDPA and >> outputs the message: >> "backend does not support LE vnet headers; falling back on userspace virtio" >> >> Signed-off-by: Konstantin Shkolnyy > > I guess this patch should be merged after > https://lists.nongnu.org/archive/html/qemu-devel/2025-02/msg02290.html > ? Actually, it is better to make it a series of patches, isn't it? It doesn't matter if it's before or after. The only (coincidental) connection between these 2 patches is that both are needed for QEMU to enable vDPA on a big-endian machine.