From patchwork Wed Jan 15 07:38:13 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 13940005 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 4589CC02185 for ; Wed, 15 Jan 2025 07:39:19 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tXxzJ-0005BN-1g; Wed, 15 Jan 2025 02:38:53 -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 1tXxzD-0005Av-Hd for qemu-devel@nongnu.org; Wed, 15 Jan 2025 02:38:47 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tXxzA-0007qv-7x for qemu-devel@nongnu.org; Wed, 15 Jan 2025 02:38:45 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1736926723; 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=BrPe0c0881kkxVT2+6rc1SX1inpIngHCi1aAp4kb4n4=; b=P5shoMb7eeXCL9/D41Y+pu1qbsqff/zan6mSbCiz6JesFFYdGEiOw4x2flOAxLXeov0A3g 7/UiYiip5K3Zsd2BGqdSYJV5AaXMSypvDTN6riVucpNknXhuWsnkWwb7AHvyS7nBWj9QFV 629ysmOSRkxZJwvRGKo/mb7/WgNFLWQ= 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-455-T5mIsYDMOsygrDAgOyZpMA-1; Wed, 15 Jan 2025 02:38:36 -0500 X-MC-Unique: T5mIsYDMOsygrDAgOyZpMA-1 X-Mimecast-MFC-AGG-ID: T5mIsYDMOsygrDAgOyZpMA Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (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 6BCE919560B7; Wed, 15 Jan 2025 07:38:35 +0000 (UTC) Received: from thuth-p1g4.redhat.com (unknown [10.39.192.143]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 30AC3195608A; Wed, 15 Jan 2025 07:38:31 +0000 (UTC) From: Thomas Huth To: qemu-s390x@nongnu.org, Christian Borntraeger , David Hildenbrand Cc: qemu-devel@nongnu.org, Halil Pasic , Eric Farman , Richard Henderson , Ilya Leoshkevich Subject: [PATCH 2/8] hw/s390x/css: Remove the obsolete "css_migration_enabled" variable Date: Wed, 15 Jan 2025 08:38:13 +0100 Message-ID: <20250115073819.15452-3-thuth@redhat.com> In-Reply-To: <20250115073819.15452-1-thuth@redhat.com> References: <20250115073819.15452-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 Received-SPF: pass client-ip=170.10.129.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.063, 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_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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 Now that the s390-ccw-virtio-2.9 machine type has been removed, we don't need the "css_migration_enabled" variable anymore and can remove the related code. Signed-off-by: Thomas Huth Reviewed-by: Philippe Mathieu-Daudé --- include/hw/s390x/css.h | 6 ------ hw/s390x/css.c | 31 +------------------------------ 2 files changed, 1 insertion(+), 36 deletions(-) diff --git a/include/hw/s390x/css.h b/include/hw/s390x/css.h index cd97e2b707..dbf919bdd2 100644 --- a/include/hw/s390x/css.h +++ b/include/hw/s390x/css.h @@ -333,10 +333,4 @@ static inline int ccw_dstream_read_buf(CcwDataStream *cds, void *buff, int len) #define ccw_dstream_read(cds, v) ccw_dstream_read_buf((cds), &(v), sizeof(v)) #define ccw_dstream_write(cds, v) ccw_dstream_write_buf((cds), &(v), sizeof(v)) -/** - * true if (vmstate based) migration of the channel subsystem - * is enabled, false if it is disabled. - */ -extern bool css_migration_enabled; - #endif diff --git a/hw/s390x/css.c b/hw/s390x/css.c index 4e27b2961b..d0680625ca 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -23,8 +23,6 @@ #include "hw/s390x/s390-virtio-ccw.h" #include "hw/s390x/s390-ccw.h" -bool css_migration_enabled = true; - typedef struct CrwContainer { CRW crw; QTAILQ_ENTRY(CrwContainer) sibling; @@ -180,16 +178,10 @@ static const VMStateDescription vmstate_orb = { } }; -static bool vmstate_schdev_orb_needed(void *opaque) -{ - return css_migration_enabled; -} - static const VMStateDescription vmstate_schdev_orb = { .name = "s390_subch_dev/orb", .version_id = 1, .minimum_version_id = 1, - .needed = vmstate_schdev_orb_needed, .fields = (const VMStateField[]) { VMSTATE_STRUCT(orb, SubchDev, 1, vmstate_orb, ORB), VMSTATE_END_OF_LIST() @@ -390,33 +382,12 @@ static int subch_dev_post_load(void *opaque, int version_id) css_subch_assign(s->cssid, s->ssid, s->schid, s->devno, s); } - if (css_migration_enabled) { - /* No compat voodoo to do ;) */ - return 0; - } - /* - * Hack alert. If we don't migrate the channel subsystem status - * we still need to find out if the guest enabled mss/mcss-e. - * If the subchannel is enabled, it certainly was able to access it, - * so adjust the max_ssid/max_cssid values for relevant ssid/cssid - * values. This is not watertight, but better than nothing. - */ - if (s->curr_status.pmcw.flags & PMCW_FLAGS_MASK_ENA) { - if (s->ssid) { - channel_subsys.max_ssid = MAX_SSID; - } - if (s->cssid != channel_subsys.default_cssid) { - channel_subsys.max_cssid = MAX_CSSID; - } - } return 0; } void css_register_vmstate(void) { - if (css_migration_enabled) { - vmstate_register(NULL, 0, &vmstate_css, &channel_subsys); - } + vmstate_register(NULL, 0, &vmstate_css, &channel_subsys); } IndAddr *get_indicator(hwaddr ind_addr, int len)