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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=64.147.123.25; envelope-from=its@irrelevant.dk; helo=wout2-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1659348602093100001 Content-Type: text/plain; charset="utf-8" From: Klaus Jensen While it is safe to process the queues when they are empty, skip it if the event notifier callback was invoked spuriously. Reviewed-by: Keith Busch Reviewed-by: Jinhao Fan Signed-off-by: Klaus Jensen --- hw/nvme/ctrl.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 533ad14e7a61..8aa73b048d51 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -4238,7 +4238,9 @@ static void nvme_cq_notifier(EventNotifier *e) NvmeCQueue *cq =3D container_of(e, NvmeCQueue, notifier); NvmeCtrl *n =3D cq->ctrl; =20 - event_notifier_test_and_clear(&cq->notifier); + if (!event_notifier_test_and_clear(e)) { + return; + } =20 nvme_update_cq_head(cq); =20 @@ -4275,7 +4277,9 @@ static void nvme_sq_notifier(EventNotifier *e) { NvmeSQueue *sq =3D container_of(e, NvmeSQueue, notifier); =20 - event_notifier_test_and_clear(&sq->notifier); + if (!event_notifier_test_and_clear(e)) { + return; + } =20 nvme_process_sq(sq); } --=20 2.36.1 From nobody Thu May 9 12:53:34 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1659348868793390.1876514002762; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=64.147.123.25; envelope-from=its@irrelevant.dk; helo=wout2-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1659348870142100001 Content-Type: text/plain; charset="utf-8" From: Klaus Jensen Make sure the notifier handler is unregistered in the main loop prior to cleaning it up. Fixes: 2e53b0b45024 ("hw/nvme: Use ioeventfd to handle doorbell updates") Reviewed-by: Keith Busch Reviewed-by: Jinhao Fan Signed-off-by: Klaus Jensen --- hw/nvme/ctrl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 8aa73b048d51..70b454eedbd8 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -4311,6 +4311,7 @@ static void nvme_free_sq(NvmeSQueue *sq, NvmeCtrl *n) if (sq->ioeventfd_enabled) { memory_region_del_eventfd(&n->iomem, 0x1000 + offset, 4, false, 0, &sq->notif= ier); + event_notifier_set_handler(&sq->notifier, NULL); event_notifier_cleanup(&sq->notifier); } g_free(sq->io_req); @@ -4701,6 +4702,7 @@ static void nvme_free_cq(NvmeCQueue *cq, NvmeCtrl *n) if (cq->ioeventfd_enabled) { memory_region_del_eventfd(&n->iomem, 0x1000 + offset, 4, false, 0, &cq->notif= ier); + event_notifier_set_handler(&cq->notifier, NULL); event_notifier_cleanup(&cq->notifier); } if (msix_enabled(&n->parent_obj)) { --=20 2.36.1 From nobody Thu May 9 12:53:34 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=64.147.123.25; envelope-from=its@irrelevant.dk; helo=wout2-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1659348821935100001 Content-Type: text/plain; charset="utf-8" From: Klaus Jensen Do not enable ioeventfd by default. Let the feature mature a bit before we consider enabling it by default. Fixes: 2e53b0b45024 ("hw/nvme: Use ioeventfd to handle doorbell updates") Reviewed-by: Keith Busch Reviewed-by: Jinhao Fan Signed-off-by: Klaus Jensen --- hw/nvme/ctrl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 70b454eedbd8..87aeba056499 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -7670,7 +7670,7 @@ static Property nvme_props[] =3D { DEFINE_PROP_UINT8("vsl", NvmeCtrl, params.vsl, 7), DEFINE_PROP_BOOL("use-intel-id", NvmeCtrl, params.use_intel_id, false), DEFINE_PROP_BOOL("legacy-cmb", NvmeCtrl, params.legacy_cmb, false), - DEFINE_PROP_BOOL("ioeventfd", NvmeCtrl, params.ioeventfd, true), + DEFINE_PROP_BOOL("ioeventfd", NvmeCtrl, params.ioeventfd, false), DEFINE_PROP_UINT8("zoned.zasl", NvmeCtrl, params.zasl, 0), DEFINE_PROP_BOOL("zoned.auto_transition", NvmeCtrl, params.auto_transition_zones, true), --=20 2.36.1