From nobody Fri Nov 14 16:37:27 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; 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=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1588758823; cv=none; d=zohomail.com; s=zohoarc; b=EiGuPONIoG/+yE+rGP3kH7q4mjk+RE8sCOCkW036Obw8rRjs6zeI8dXYEZV39GM9k6mXnwsVbVdKWDoImyZei6t3lQdOE9eHoB12MgVYHTpE8MFHNJMfCwXrUuwZulIQ/f6Z82Hh3RZ6EPF/mb/A6bq6ieYO6V6/BO7dfyVEh9A= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1588758823; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=ZENkbpOQATs9T0Mx8ZvJbUDiOPi/mRt38fEpR3MkuxY=; b=RwH0PzDnYDSfAZKBQNqb3qCMcUo0cC1XSaicaUixMaa3bPTg5+CyRP//rFJksoT8u2dvx0I5kRYv9srHsSv0EgvPsIQvKW4eEDBCJpMspbN81l7HIqlKMNhrbrhvNCyGhlSgWwkv2ieLfIyfn2u0ZYE3z/8HfpG1w61ijt1d1U8= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; 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=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1588758823456494.60013192721885; Wed, 6 May 2020 02:53:43 -0700 (PDT) Received: from localhost ([::1]:60262 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jWGkI-0001v0-4W for importer@patchew.org; Wed, 06 May 2020 05:53:42 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54252) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jWGhM-00050Q-18 for qemu-devel@nongnu.org; Wed, 06 May 2020 05:50:40 -0400 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:50953 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jWGhL-0004Xr-6y for qemu-devel@nongnu.org; Wed, 06 May 2020 05:50:39 -0400 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-193-YleYrMkWOMubZD7E1CkN7A-1; Wed, 06 May 2020 05:50:34 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A54FB100CCC5; Wed, 6 May 2020 09:50:33 +0000 (UTC) Received: from t480s.redhat.com (ovpn-113-17.ams2.redhat.com [10.36.113.17]) by smtp.corp.redhat.com (Postfix) with ESMTP id 402C15C1BD; Wed, 6 May 2020 09:50:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588758638; 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=ZENkbpOQATs9T0Mx8ZvJbUDiOPi/mRt38fEpR3MkuxY=; b=NF86haoOosm8Gp0k+5fv+WLV8eZ1uUfVqWSV6a+4Z7Wnx1i1dMO+1s3PABDUMRqatNuoY1 +B08LleRf1srf1CzmvUs4ECRsB9hNqKNVhPMfiwHSFPSsGVzEDunu1Uqzg77KMGWYgj4vn 1Wf/cEe4gFwF6Gj6cOzPhvTvbvbDWvY= X-MC-Unique: YleYrMkWOMubZD7E1CkN7A-1 From: David Hildenbrand To: qemu-devel@nongnu.org Subject: [PATCH v1 06/17] target/i386: sev: Use ram_block_discard_set_broken() Date: Wed, 6 May 2020 11:49:37 +0200 Message-Id: <20200506094948.76388-7-david@redhat.com> In-Reply-To: <20200506094948.76388-1-david@redhat.com> References: <20200506094948.76388-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Content-Transfer-Encoding: quoted-printable 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=207.211.31.81; envelope-from=david@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/06 02:39:40 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] 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, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , kvm@vger.kernel.org, "Michael S . Tsirkin" , David Hildenbrand , "Dr . David Alan Gilbert" , qemu-s390x@nongnu.org, Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" AMD SEV will pin all guest memory, mark discarding of RAM broken. At the time this is called, we cannot have anyone active that relies on discards to work properly. Cc: "Michael S. Tsirkin" Cc: Paolo Bonzini Cc: Richard Henderson Cc: Eduardo Habkost Signed-off-by: David Hildenbrand Reviewed-by: Dr. David Alan Gilbert --- target/i386/sev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/target/i386/sev.c b/target/i386/sev.c index 846018a12d..608225f9ba 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -722,6 +722,7 @@ sev_guest_init(const char *id) ram_block_notifier_add(&sev_ram_notifier); qemu_add_machine_init_done_notifier(&sev_machine_done_notify); qemu_add_vm_change_state_handler(sev_vm_state_change, s); + g_assert(!ram_block_discard_set_broken(true)); =20 return s; err: --=20 2.25.3