Hey everyone,
When running a Virtio performance test on a VM using VHost with this patch
applied,
VHost gives the following error message:
> VHOST_CONFIG: (/tmp/vhost) read message VHOST_USER_SET_FEATURES
> VHOST_CONFIG: (/tmp/vhost) negotiated Virtio features: 0x0
> VHOST_CONFIG: (/tmp/vhost) read message VHOST_USER_SET_MEM_TABLE
> VHOST_CONFIG: (/tmp/vhost) guest memory region size: 0x80000000
> VHOST_CONFIG: (/tmp/vhost) guest physical addr: 0x0
> VHOST_CONFIG: (/tmp/vhost) guest virtual addr: 0x7f17c0000000
> VHOST_CONFIG: (/tmp/vhost) host virtual addr: 0x7f94c0000000
> VHOST_CONFIG: (/tmp/vhost) mmap addr : 0x7f94c0000000
> VHOST_CONFIG: (/tmp/vhost) mmap size : 0x80000000
> VHOST_CONFIG: (/tmp/vhost) mmap align: 0x40000000
> VHOST_CONFIG: (/tmp/vhost) mmap off : 0x0
> VHOST_CONFIG: (/tmp/vhost) read message VHOST_USER_SET_VRING_NUM
> VHOST_CONFIG: (/tmp/vhost) read message VHOST_USER_SET_VRING_BASE
> VHOST_CONFIG: (/tmp/vhost) vring base idx:0 last_used_idx:0 last_avail_idx:0.
> VHOST_CONFIG: (/tmp/vhost) read message VHOST_USER_SET_VRING_ADDR
> VHOST_CONFIG: (/tmp/vhost) read message VHOST_USER_SET_VRING_KICK
> VHOST_CONFIG: (/tmp/vhost) vring kick idx:0 file:37
> VHOST_CONFIG: (/tmp/vhost) reallocated virtqueue on node 1
> VHOST_CONFIG: (/tmp/vhost) reallocated device on node 1
> VHOST_CONFIG: (/tmp/vhost) virtio is now ready for processing.
> USER1: New Vhost-crypto Device /tmp/vhost, Device ID 0
> VHOST_CONFIG: (/tmp/vhost) read message VHOST_USER_SET_VRING_CALL
> VHOST_CONFIG: (/tmp/vhost) vring call idx:0 file:38
> USER1: [VHOST-Crypto]: Session 1 created for vdev 0.
> USER1: [VHOST-Crypto]: Incorrect virtio descriptor
> USER1: [VHOST-Crypto]: Failed to process sym request
> USER1: [VHOST-Crypto]: Incorrect virtio descriptor
> USER1: [VHOST-Crypto]: Failed to process sym request
Due to this, performance test hangs and never finishes.
Kind Regards,
Jakub Poczatek
-----Original Message-----
From: Maxime Coquelin <maxime.coque...@redhat.com>
Sent: Tuesday 21 June 2022 10:31
To: David Marchand <david.march...@redhat.com>; dev@dpdk.org
Cc: sta...@dpdk.org; Xia, Chenbo <chenbo....@intel.com>; Zhang, Roy Fan
<roy.fan.zh...@intel.com>
Subject: Re: [PATCH v3] vhost/crypto: fix build with GCC 12
On 6/16/22 16:46, David Marchand wrote:
> GCC 12 raises the following warning:
>
> In file included from ../lib/mempool/rte_mempool.h:46,
> from ../lib/mbuf/rte_mbuf.h:38,
> from ../lib/vhost/vhost_crypto.c:7:
> ../lib/vhost/vhost_crypto.c: In function ‘rte_vhost_crypto_fetch_requests’:
> ../lib/eal/x86/include/rte_memcpy.h:371:9: warning: array subscript 1 is
> outside array bounds of ‘struct virtio_crypto_op_data_req[1]’
> [-Warray-bounds]
> 371 | rte_mov32((uint8_t *)dst + 3 * 32, (const uint8_t *)src + 3 * 32);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ../lib/vhost/vhost_crypto.c:1178:42: note: while referencing ‘req’
> 1178 | struct virtio_crypto_op_data_req req;
> | ^~~
>
> Split this function and separate the per descriptor copy.
> This makes the code clearer, and the compiler happier.
>
> Note: logs for errors have been moved to callers to avoid duplicates.
>
> Fixes: 3c79609fda7c ("vhost/crypto: handle virtually non-contiguous buffers")
> Cc: sta...@dpdk.org
>
> Signed-off-by: David Marchand <david.march...@redhat.com>
> ---
> Changes since v2:
> - fixed 32-bits build,
>
> Changes since v1:
> - refactored copy function,
>
> ---
> lib/vhost/vhost_crypto.c | 123 +++++++++++++++------------------------
> 1 file changed, 46 insertions(+), 77 deletions(-)
>
Applied to dpdk-next-virtio/main.
Thanks,
Maxime
