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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::62d; envelope-from=minwoo.im.dev@gmail.com; helo=mail-pl1-x62d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Keith Busch , Klaus Jensen , Minwoo Im , Kevin Wolf , Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Volatile Write Cache(VWC) feature is set in nvme_ns_setup() in the initial time. This feature is related to block device backed, but this feature is controlled in controller level via Set/Get Features command. This patch removed dependency between nvme and nvme-ns to manage the VWC flag value. Also, it open coded the Get Features for VWC to check all namespaces attached to the controller, and if false detected, return directly false. Signed-off-by: Minwoo Im Reviewed-by: Klaus Jensen --- hw/block/nvme-ns.c | 4 ---- hw/block/nvme.c | 15 ++++++++++++--- hw/block/nvme.h | 1 - 3 files changed, 12 insertions(+), 8 deletions(-) diff --git a/hw/block/nvme-ns.c b/hw/block/nvme-ns.c index 32662230130b..c403cd36b6bd 100644 --- a/hw/block/nvme-ns.c +++ b/hw/block/nvme-ns.c @@ -89,10 +89,6 @@ static int nvme_ns_init_blk(NvmeCtrl *n, NvmeNamespace *= ns, Error **errp) return -1; } =20 - if (blk_enable_write_cache(ns->blkconf.blk)) { - n->features.vwc =3D 0x1; - } - return 0; } =20 diff --git a/hw/block/nvme.c b/hw/block/nvme.c index cf0fe28fe6eb..b2a9c48a9d81 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -3033,6 +3033,7 @@ static uint16_t nvme_get_feature(NvmeCtrl *n, NvmeReq= uest *req) NvmeGetFeatureSelect sel =3D NVME_GETFEAT_SELECT(dw10); uint16_t iv; NvmeNamespace *ns; + int i; =20 static const uint32_t nvme_feature_default[NVME_FID_MAX] =3D { [NVME_ARBITRATION] =3D NVME_ARB_AB_NOLIMIT, @@ -3108,7 +3109,17 @@ static uint16_t nvme_get_feature(NvmeCtrl *n, NvmeRe= quest *req) result =3D ns->features.err_rec; goto out; case NVME_VOLATILE_WRITE_CACHE: - result =3D n->features.vwc; + for (i =3D 1; i <=3D n->num_namespaces; i++) { + ns =3D nvme_ns(n, i); + if (!ns) { + continue; + } + + result =3D blk_enable_write_cache(ns->blkconf.blk); + if (!result) { + break; + } + } trace_pci_nvme_getfeat_vwcache(result ? "enabled" : "disabled"); goto out; case NVME_ASYNCHRONOUS_EVENT_CONF: @@ -3271,8 +3282,6 @@ static uint16_t nvme_set_feature(NvmeCtrl *n, NvmeReq= uest *req) ns->features.err_rec =3D dw11; break; case NVME_VOLATILE_WRITE_CACHE: - n->features.vwc =3D dw11 & 0x1; - for (i =3D 1; i <=3D n->num_namespaces; i++) { ns =3D nvme_ns(n, i); if (!ns) { diff --git a/hw/block/nvme.h b/hw/block/nvme.h index b7fbcca39d9f..5ba83ee77841 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -117,7 +117,6 @@ typedef struct NvmeFeatureVal { uint16_t temp_thresh_low; }; uint32_t async_config; - uint32_t vwc; } NvmeFeatureVal; =20 typedef struct NvmeCtrl { --=20 2.17.1