From patchwork Tue Jun 20 13:03:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 13285813 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 27DA3EB64D8 for ; Tue, 20 Jun 2023 13:05:07 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qBb1q-0002f9-OG; Tue, 20 Jun 2023 09:04:14 -0400 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 1qBb1o-0002eZ-Us for qemu-devel@nongnu.org; Tue, 20 Jun 2023 09:04:12 -0400 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 1qBb1m-0006qO-V1 for qemu-devel@nongnu.org; Tue, 20 Jun 2023 09:04:12 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1687266249; 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=+uVChHehTSj/KFWUtBjAS9n/YLbw7wl8kGYZAi8Fb9U=; b=CBH0/TB2xUJ2Es7KzLgSEaWGykvj44no1Hy06hGe+on5aK/YqSpb4+ayeO8mXvQOIcj3ul 21VUivHME0wy8seuPyz2NVNWI42BE0Cy8qJCDIRJePPpt5DFa64sfTuzSgUKLE4mTooQSV QkS8IvPj5vItIGywx8fthIz400kkuTo= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-62-PyYTVGgxMkuFEaIlnf-Jsg-1; Tue, 20 Jun 2023 09:04:06 -0400 X-MC-Unique: PyYTVGgxMkuFEaIlnf-Jsg-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6C01489C7FD; Tue, 20 Jun 2023 13:04:04 +0000 (UTC) Received: from t480s.fritz.box (unknown [10.39.193.26]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8DB022166B26; Tue, 20 Jun 2023 13:04:02 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Cc: David Hildenbrand , "Michael S. Tsirkin" , Juan Quintela , Peter Xu , Leonardo Bras , Paolo Bonzini , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Peng Tao Subject: [PATCH v1 3/4] migration/ram: Expose ramblock_is_ignored() as migrate_ram_is_ignored() Date: Tue, 20 Jun 2023 15:03:53 +0200 Message-Id: <20230620130354.322180-4-david@redhat.com> In-Reply-To: <20230620130354.322180-1-david@redhat.com> References: <20230620130354.322180-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 Received-SPF: pass client-ip=170.10.133.124; envelope-from=david@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, SPF_HELO_NONE=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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org virtio-mem wants to know whether it should not mess with the RAMBlock content (e.g., discard RAM, preallocate memory) on incoming migration. So let's expose that function as migrate_ram_is_ignored() in migration/misc.h Signed-off-by: David Hildenbrand Acked-by: Peter Xu --- include/migration/misc.h | 1 + migration/postcopy-ram.c | 2 +- migration/ram.c | 14 +++++++------- migration/ram.h | 3 +-- 4 files changed, 10 insertions(+), 10 deletions(-) diff --git a/include/migration/misc.h b/include/migration/misc.h index 5ebe13b4b9..7dcc0b5c2c 100644 --- a/include/migration/misc.h +++ b/include/migration/misc.h @@ -40,6 +40,7 @@ int precopy_notify(PrecopyNotifyReason reason, Error **errp); void ram_mig_init(void); void qemu_guest_free_page_hint(void *addr, size_t len); +bool migrate_ram_is_ignored(RAMBlock *block); /* migration/block.c */ diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c index 5615ec29eb..29aea9456d 100644 --- a/migration/postcopy-ram.c +++ b/migration/postcopy-ram.c @@ -408,7 +408,7 @@ bool postcopy_ram_supported_by_host(MigrationIncomingState *mis, Error **errp) /* * We don't support postcopy with some type of ramblocks. * - * NOTE: we explicitly ignored ramblock_is_ignored() instead we checked + * NOTE: we explicitly ignored migrate_ram_is_ignored() instead we checked * all possible ramblocks. This is because this function can be called * when creating the migration object, during the phase RAM_MIGRATABLE * is not even properly set for all the ramblocks. diff --git a/migration/ram.c b/migration/ram.c index 5283a75f02..0ada6477e8 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -194,7 +194,7 @@ static bool postcopy_preempt_active(void) return migrate_postcopy_preempt() && migration_in_postcopy(); } -bool ramblock_is_ignored(RAMBlock *block) +bool migrate_ram_is_ignored(RAMBlock *block) { return !qemu_ram_is_migratable(block) || (migrate_ignore_shared() && qemu_ram_is_shared(block) @@ -696,7 +696,7 @@ static void pss_find_next_dirty(PageSearchStatus *pss) unsigned long size = rb->used_length >> TARGET_PAGE_BITS; unsigned long *bitmap = rb->bmap; - if (ramblock_is_ignored(rb)) { + if (migrate_ram_is_ignored(rb)) { /* Points directly to the end, so we know no dirty page */ pss->page = size; return; @@ -780,7 +780,7 @@ unsigned long colo_bitmap_find_dirty(RAMState *rs, RAMBlock *rb, *num = 0; - if (ramblock_is_ignored(rb)) { + if (migrate_ram_is_ignored(rb)) { return size; } @@ -2260,7 +2260,7 @@ static int ram_save_host_page(RAMState *rs, PageSearchStatus *pss) unsigned long start_page = pss->page; int res; - if (ramblock_is_ignored(pss->block)) { + if (migrate_ram_is_ignored(pss->block)) { error_report("block %s should not be migrated !", pss->block->idstr); return 0; } @@ -3347,7 +3347,7 @@ static inline RAMBlock *ram_block_from_stream(MigrationIncomingState *mis, return NULL; } - if (ramblock_is_ignored(block)) { + if (migrate_ram_is_ignored(block)) { error_report("block %s should not be migrated !", id); return NULL; } @@ -3958,7 +3958,7 @@ static int ram_load_precopy(QEMUFile *f) } if (migrate_ignore_shared()) { hwaddr addr = qemu_get_be64(f); - if (ramblock_is_ignored(block) && + if (migrate_ram_is_ignored(block) && block->mr->addr != addr) { error_report("Mismatched GPAs for block %s " "%" PRId64 "!= %" PRId64, @@ -4254,7 +4254,7 @@ static void ram_mig_ram_block_resized(RAMBlockNotifier *n, void *host, RAMBlock *rb = qemu_ram_block_from_host(host, false, &offset); Error *err = NULL; - if (ramblock_is_ignored(rb)) { + if (migrate_ram_is_ignored(rb)) { return; } diff --git a/migration/ram.h b/migration/ram.h index ea1f3c25b5..145c915ca7 100644 --- a/migration/ram.h +++ b/migration/ram.h @@ -36,11 +36,10 @@ extern XBZRLECacheStats xbzrle_counters; extern CompressionStats compression_counters; -bool ramblock_is_ignored(RAMBlock *block); /* Should be holding either ram_list.mutex, or the RCU lock. */ #define RAMBLOCK_FOREACH_NOT_IGNORED(block) \ INTERNAL_RAMBLOCK_FOREACH(block) \ - if (ramblock_is_ignored(block)) {} else + if (migrate_ram_is_ignored(block)) {} else #define RAMBLOCK_FOREACH_MIGRATABLE(block) \ INTERNAL_RAMBLOCK_FOREACH(block) \