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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741103640; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=gXyKoFHGiQahpOBoJwyk44S5pPIr4DbYRP81bpmu/hM=; b=VHWrgIOjpqzRMZnrfFNTL+NVjamegNB1Qs/qhyoCop40zknRUKc5vzE8hjsWbBR0AVo1SL vdE8BdhhWC6SddEXdjcPYvvhDoe/WBtKMPsQgWRASfzXpuCdwTdDqqbLIU48gFXZAzWIu6 hzPCQAgLLpC9t3OIBmLuBEzzA8T7xzs= X-MC-Unique: CVhrZqUkOu6KQnjDDKyVtg-1 X-Mimecast-MFC-AGG-ID: CVhrZqUkOu6KQnjDDKyVtg_1741103562 From: Alberto Faria To: qemu-devel@nongnu.org Cc: Fam Zheng , Kevin Wolf , Paolo Bonzini , qemu-block@nongnu.org, Alberto Faria Subject: [PATCH 1/2] scsi-disk: Advertise FUA support by default Date: Tue, 4 Mar 2025 15:52:31 +0000 Message-ID: <20250304155232.1325581-2-afaria@redhat.com> In-Reply-To: <20250304155232.1325581-1-afaria@redhat.com> References: <20250304155232.1325581-1-afaria@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" FUA emulation code is already is place. Signed-off-by: Alberto Faria --- hw/scsi/scsi-disk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c index e7f738b484..8cf50845ab 100644 --- a/hw/scsi/scsi-disk.c +++ b/hw/scsi/scsi-disk.c @@ -3212,7 +3212,7 @@ static const Property scsi_hd_properties[] =3D { DEFINE_PROP_BIT("removable", SCSIDiskState, features, SCSI_DISK_F_REMOVABLE, false), DEFINE_PROP_BIT("dpofua", SCSIDiskState, features, - SCSI_DISK_F_DPOFUA, false), + SCSI_DISK_F_DPOFUA, true), DEFINE_PROP_UINT64("wwn", SCSIDiskState, qdev.wwn, 0), DEFINE_PROP_UINT64("port_wwn", SCSIDiskState, qdev.port_wwn, 0), DEFINE_PROP_UINT16("port_index", SCSIDiskState, port_index, 0), --=20 2.48.1 From nobody Wed Mar 5 02:39:02 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; 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; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; 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Tue, 04 Mar 2025 10:52:46 -0500 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id AA5B4180087A; Tue, 4 Mar 2025 15:52:45 +0000 (UTC) Received: from desktop.redhat.com (unknown [10.45.225.219]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id F40F71954B00; Tue, 4 Mar 2025 15:52:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741103641; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=WUsDQ4gd5JKDW1XYIWJv4ncLVtfSAQcwTOlC9O8ByYQ=; b=blkmkWM5Im7bdJga0plSTwx9jhOoBcLphFBRoIqNHRx5NNAbarsuuXA3V3w6CAuJdaMKk/ C8Civi6fYH5upGkrRnKM0sf15oySiJH5VhAa1qM9P0CCV1kJtAlmRhV788EEkdblnHDoKQ d7gBU9fzzSID3nHE8TYMqYhrUXSRA0Q= X-MC-Unique: EdQRlOLAMban69SzMb74Rg-1 X-Mimecast-MFC-AGG-ID: EdQRlOLAMban69SzMb74Rg_1741103566 From: Alberto Faria To: qemu-devel@nongnu.org Cc: Fam Zheng , Kevin Wolf , Paolo Bonzini , qemu-block@nongnu.org, Alberto Faria Subject: [PATCH 2/2] scsi-disk: Add native FUA support Date: Tue, 4 Mar 2025 15:52:32 +0000 Message-ID: <20250304155232.1325581-3-afaria@redhat.com> In-Reply-To: <20250304155232.1325581-1-afaria@redhat.com> References: <20250304155232.1325581-1-afaria@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=afaria@redhat.com; helo=us-smtp-delivery-124.mimecast.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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, 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: 2.1.29 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1741103671134019000 Content-Type: text/plain; charset="utf-8" Avoid emulating FUA when the driver supports it natively. This should provide better performance than a full flush after the write. Signed-off-by: Alberto Faria --- hw/scsi/scsi-disk.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c index 8cf50845ab..ce48e20ee6 100644 --- a/hw/scsi/scsi-disk.c +++ b/hw/scsi/scsi-disk.c @@ -43,6 +43,7 @@ #include "qemu/cutils.h" #include "trace.h" #include "qom/object.h" +#include "block/block_int-common.h" =20 #ifdef __linux #include @@ -75,7 +76,7 @@ struct SCSIDiskClass { */ DMAIOFunc *dma_readv; DMAIOFunc *dma_writev; - bool (*need_fua_emulation)(SCSICommand *cmd); + bool (*need_fua)(SCSICommand *cmd); void (*update_sense)(SCSIRequest *r); }; =20 @@ -86,6 +87,7 @@ typedef struct SCSIDiskReq { uint32_t sector_count; uint32_t buflen; bool started; + bool need_fua; bool need_fua_emulation; struct iovec iov; QEMUIOVector qiov; @@ -553,7 +555,7 @@ static void scsi_read_data(SCSIRequest *req) =20 first =3D !r->started; r->started =3D true; - if (first && r->need_fua_emulation) { + if (first && r->need_fua) { block_acct_start(blk_get_stats(s->qdev.conf.blk), &r->acct, 0, BLOCK_ACCT_FLUSH); r->req.aiocb =3D blk_aio_flush(s->qdev.conf.blk, scsi_do_read_cb, = r); @@ -2384,7 +2386,9 @@ static int32_t scsi_disk_dma_command(SCSIRequest *req= , uint8_t *buf) scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); return 0; } - r->need_fua_emulation =3D sdc->need_fua_emulation(&r->req.cmd); + r->need_fua =3D sdc->need_fua(&r->req.cmd); + r->need_fua_emulation =3D r->need_fua && + (blk_bs(s->qdev.conf.blk)->supported_write_flags & BDRV_REQ_FUA) = =3D=3D 0; if (r->sector_count =3D=3D 0) { scsi_req_complete(&r->req, GOOD); } @@ -3134,7 +3138,8 @@ BlockAIOCB *scsi_dma_writev(int64_t offset, QEMUIOVec= tor *iov, { SCSIDiskReq *r =3D opaque; SCSIDiskState *s =3D DO_UPCAST(SCSIDiskState, qdev, r->req.dev); - return blk_aio_pwritev(s->qdev.conf.blk, offset, iov, 0, cb, cb_opaque= ); + int flags =3D r->need_fua && !r->need_fua_emulation ? BDRV_REQ_FUA : 0; + return blk_aio_pwritev(s->qdev.conf.blk, offset, iov, flags, cb, cb_op= aque); } =20 static char *scsi_property_get_loadparm(Object *obj, Error **errp) @@ -3183,7 +3188,7 @@ static void scsi_disk_base_class_initfn(ObjectClass *= klass, void *data) device_class_set_legacy_reset(dc, scsi_disk_reset); sdc->dma_readv =3D scsi_dma_readv; sdc->dma_writev =3D scsi_dma_writev; - sdc->need_fua_emulation =3D scsi_is_cmd_fua; + sdc->need_fua =3D scsi_is_cmd_fua; } =20 static const TypeInfo scsi_disk_base_info =3D { @@ -3335,7 +3340,7 @@ static void scsi_block_class_initfn(ObjectClass *klas= s, void *data) sdc->dma_readv =3D scsi_block_dma_readv; sdc->dma_writev =3D scsi_block_dma_writev; sdc->update_sense =3D scsi_block_update_sense; - sdc->need_fua_emulation =3D scsi_block_no_fua; + sdc->need_fua =3D scsi_block_no_fua; dc->desc =3D "SCSI block device passthrough"; device_class_set_props(dc, scsi_block_properties); dc->vmsd =3D &vmstate_scsi_disk_state; --=20 2.48.1