|SUCCESS|dpdk-next-virtio|0810eba6c0| Intel-Testing

[sys_stv at intel.com]

Test-Label: intel-Testing
Test-Status: SUCCESS
_Testing PASS_

DPDK git repo: dpdk-next-virtio
commit 0810eba6c0533425ba4d0c9550586602215babf9
Author: Pravin M Bathija <pravin.bathija at dell.com>
Date:   Fri Jul 31 08:10:31 2026 +0000

    vhost: tolerate file descriptor in REM_MEM_REG msg
    
    The vhost-user specification (vhost-user.rst) states that no file
    descriptors SHOULD be passed with VHOST_USER_REM_MEM_REG.  However,
    it also says: "For compatibility with existing incorrect
    implementations, the back-end MAY accept messages with one file
    descriptor.  If a file descriptor is passed, the back-end MUST close
    it without using it otherwise."
    
    Some front-ends, notably libblkio, reuse the same message-building
    helper for both ADD_MEM_REG and REM_MEM_REG and unconditionally attach
    the mapping fd.  The previous implementation rejected any
    REM_MEM_REG carrying a file descriptor with the error:
    
            expect 0 FDs for request VHOST_USER_REM_MEM_REG, received 1
    
    This broke teardown and memory region hot-swap with these front-ends.
    
    To reproduce, run any libblkio (v1.5.0) application using the
    virtio-blk-vhost-user driver against a DPDK vhost back-end.  The
    connection is dropped during cleanup or whenever a memory region is
    unmapped and remapped.
    
    QEMU's libvhost-user reference back-end (vu_rem_mem_reg) already
    tolerates zero or one fd in this message.  Align DPDK's behavior
    with both the specification's compatibility clause and the reference
    implementation by accepting the message and closing any unexpected fd.
    
    Tested with:
     - QEMU VM bring-up with runtime add/remove memory regions via
       QEMU monitor
     - QEMU post-copy live migration between source and destination
     - SPDK vhost-blk with libblkio (fio libblkio engine, write + md5
       verify)
     - libblkio alloc-mem-region and map-mem-region tests exercising
       ADD_MEM_REG / REM_MEM_REG / ADD_MEM_REG cycles against SPDK
       vhost-blk
    
    Fixes: 1d730eea6a42 ("vhost: add memory region handlers")
    Cc: stable at dpdk.org
    
    Signed-off-by: Pravin M Bathija <pravin.bathija at dell.com>
    Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>

Testing Summary : 18 Case Done, 18 Successful, 0 Failures      

TestPlan:
	pf_smoke: http://git.dpdk.org/tools/dts/tree/test_plans/pf_smoke_test_plan.rst
	vf_smoke: http://git.dpdk.org/tools/dts/tree/test_plans/vf_smoke_test_plan.rst
	virtio_smoke: http://git.dpdk.org/tools/dts/tree/test_plans/virtio_smoke_test_plan.rst

TestSuite:
	pf_smoke: http://git.dpdk.org/tools/dts/tree/tests/TestSuite_pf_smoke.py
	vf_smoke: http://git.dpdk.org/tools/dts/tree/tests/TestSuite_vf_smoke.py
	virtio_smoke: http://git.dpdk.org/tools/dts/tree/tests/TestSuite_virtio_smoke.py


OS : Ubuntu 24.04.4 LTS       
Kernel : 6.8.0-87-generic         
GCC : 13.3.0-6ubuntu2~24.04.1        
NIC : Ethernet Controller E810-C for SFP         
Target : x86_64-native-linuxapp-gcc      

	Test result details:
	+-------------+---------------------------+-------+
	| suite       | case                      | status|
	+-------------+---------------------------+-------+
	| asan_smoke  | test_rxtx_with_ASan_enable| passed|
	| pf_smoke    | test_pf_jumbo_frames      | passed|
	| pf_smoke    | test_pf_rss               | passed|
	| pf_smoke    | test_pf_tx_rx_queue       | passed|
	| vf_smoke    | test_vf_jumbo_frames      | passed|
	| vf_smoke    | test_vf_rss               | passed|
	| vf_smoke    | test_vf_tx_rx_queue       | passed|
	| virtio_smoke| test_virtio_loopback      | passed|
	| virtio_smoke| test_virtio_pvp           | passed|
	+-------------+---------------------------+-------+


OS : Ubuntu 24.04.4 LTS       
Kernel : 6.8.0-71-generic         
GCC : 13.3.0-6ubuntu2~24.04.1        
NIC : Ethernet Controller XL710 for 40GbE QSFP+         
Target : x86_64-native-linuxapp-gcc      

	Test result details:
	+-------------+---------------------------+-------+
	| suite       | case                      | status|
	+-------------+---------------------------+-------+
	| asan_smoke  | test_rxtx_with_ASan_enable| passed|
	| pf_smoke    | test_pf_jumbo_frames      | passed|
	| pf_smoke    | test_pf_rss               | passed|
	| pf_smoke    | test_pf_tx_rx_queue       | passed|
	| vf_smoke    | test_vf_rss               | passed|
	| vf_smoke    | test_vf_tx_rx_queue       | passed|
	| vf_smoke    | test_vf_jumbo_frames      | n/a   |
	| virtio_smoke| test_virtio_loopback      | passed|
	| virtio_smoke| test_virtio_pvp           | passed|
	+-------------+---------------------------+-------+


DPDK STV team