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[79.46.200.178]) by smtp.gmail.com with ESMTPSA id q11-20020a5d658b000000b0021e4bc9edbfsm12921743wru.112.2022.08.10.02.43.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Aug 2022 02:43:54 -0700 (PDT) From: Stefano Garzarella To: virtualization@lists.linux-foundation.org Cc: Jason Wang , "Michael S. Tsirkin" , linux-kernel@vger.kernel.org, Stefano Garzarella Subject: [PATCH v2 3/4] vdpa_sim_blk: add support for VIRTIO_BLK_T_FLUSH Date: Wed, 10 Aug 2022 11:43:46 +0200 Message-Id: <20220810094347.20449-4-sgarzare@redhat.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220810094347.20449-1-sgarzare@redhat.com> References: <20220810094347.20449-1-sgarzare@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The simulator behaves like a ramdisk, so we don't have to do anything when a VIRTIO_BLK_T_FLUSH request is received, but it could be useful to test driver behavior. Let's expose the VIRTIO_BLK_F_FLUSH feature to inform the driver that we support the flush command. Signed-off-by: Stefano Garzarella --- drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c b/drivers/vdpa/vdpa_sim/v= dpa_sim_blk.c index 24dd9cae6450..1f18f336cf0c 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c @@ -25,6 +25,7 @@ #define DRV_LICENSE "GPL v2" =20 #define VDPASIM_BLK_FEATURES (VDPASIM_FEATURES | \ + (1ULL << VIRTIO_BLK_F_FLUSH) | \ (1ULL << VIRTIO_BLK_F_SIZE_MAX) | \ (1ULL << VIRTIO_BLK_F_SEG_MAX) | \ (1ULL << VIRTIO_BLK_F_BLK_SIZE) | \ @@ -188,6 +189,10 @@ static bool vdpasim_blk_handle_req(struct vdpasim *vdp= asim, pushed +=3D bytes; break; =20 + case VIRTIO_BLK_T_FLUSH: + /* nothing to do */ + break; + default: dev_dbg(&vdpasim->vdpa.dev, "Unsupported request type %d\n", type); --=20 2.37.1