From patchwork Fri Mar 7 11:53:14 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 14006359 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C2D74C19F32 for ; Fri, 7 Mar 2025 11:55:26 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tqWHH-0002RF-QB; Fri, 07 Mar 2025 06:54:07 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tqWHG-0002Qa-5N for qemu-devel@nongnu.org; Fri, 07 Mar 2025 06:54:06 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tqWHE-0000No-Mz for qemu-devel@nongnu.org; Fri, 07 Mar 2025 06:54:05 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741348444; 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=vP08kGh1gBxCAKNj7Mea7eFddJb1NSFNTaj+GwlfRgc=; b=cAbDG6R3DnI8lkF80ug7eTwfZbxbc88xmWerIwE7U4ta8DloVfJw3sBskWVNTSOqKZycYC kDE0UfIDhFG/kF9pY1t0hI+t2QBj6IlCJpsYKd0pLGrxqCk5c7UuKIajbfFUifUtu97CNL y93N45pCBIRRjeCeXJIQkeGE5xbm9ws= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-692-BDwsAU0sNzqTptpSMzn6-A-1; Fri, 07 Mar 2025 06:54:02 -0500 X-MC-Unique: BDwsAU0sNzqTptpSMzn6-A-1 X-Mimecast-MFC-AGG-ID: BDwsAU0sNzqTptpSMzn6-A_1741348441 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-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 6C01B19560BC; Fri, 7 Mar 2025 11:54:01 +0000 (UTC) Received: from thuth-p1g4.redhat.com (unknown [10.44.32.60]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 21BC91944F2E; Fri, 7 Mar 2025 11:53:58 +0000 (UTC) From: Thomas Huth To: qemu-devel@nongnu.org Cc: Stefan Hajnoczi , Matthew Rosato , Niklas Schnelle Subject: [PULL 15/15] s390x/pci: indicate QEMU supports relaxed translation for passthrough Date: Fri, 7 Mar 2025 12:53:14 +0100 Message-ID: <20250307115314.1096373-16-thuth@redhat.com> In-Reply-To: <20250307115314.1096373-1-thuth@redhat.com> References: <20250307115314.1096373-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass client-ip=170.10.133.124; envelope-from=thuth@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_H2=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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Matthew Rosato Specifying this bit in the guest CLP response indicates that the guest can optionally choose to skip translation and instead use identity-mapped operations. Tested-by: Niklas Schnelle Reviewed-by: Niklas Schnelle Signed-off-by: Matthew Rosato Message-ID: <20250226210013.238349-3-mjrosato@linux.ibm.com> Signed-off-by: Thomas Huth --- include/hw/s390x/s390-pci-clp.h | 1 + hw/s390x/s390-pci-vfio.c | 5 ++++- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/include/hw/s390x/s390-pci-clp.h b/include/hw/s390x/s390-pci-clp.h index 03b7f9ba5f7..6a635d693ba 100644 --- a/include/hw/s390x/s390-pci-clp.h +++ b/include/hw/s390x/s390-pci-clp.h @@ -158,6 +158,7 @@ typedef struct ClpRspQueryPciGrp { #define CLP_RSP_QPCIG_MASK_NOI 0xfff uint16_t i; uint8_t version; +#define CLP_RSP_QPCIG_MASK_RTR 0x20 #define CLP_RSP_QPCIG_MASK_FRAME 0x2 #define CLP_RSP_QPCIG_MASK_REFRESH 0x1 uint8_t fr; diff --git a/hw/s390x/s390-pci-vfio.c b/hw/s390x/s390-pci-vfio.c index 443e2229127..6236ac7f1e6 100644 --- a/hw/s390x/s390-pci-vfio.c +++ b/hw/s390x/s390-pci-vfio.c @@ -238,8 +238,11 @@ static void s390_pci_read_group(S390PCIBusDevice *pbdev, pbdev->pci_group = s390_group_create(pbdev->zpci_fn.pfgid, start_gid); resgrp = &pbdev->pci_group->zpci_group; + if (pbdev->rtr_avail) { + resgrp->fr |= CLP_RSP_QPCIG_MASK_RTR; + } if (cap->flags & VFIO_DEVICE_INFO_ZPCI_FLAG_REFRESH) { - resgrp->fr = 1; + resgrp->fr |= CLP_RSP_QPCIG_MASK_REFRESH; } resgrp->dasm = cap->dasm; resgrp->msia = cap->msi_addr;