From patchwork Wed Sep 25 15:36:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julia Suvorova X-Patchwork-Id: 1989459 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=TOvQq2GO; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XDLVq6DB2z1xt4 for ; Thu, 26 Sep 2024 01:38:59 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1stU5m-0008Ee-4n; Wed, 25 Sep 2024 11:38:14 -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 1stU5f-0007jO-5c for qemu-devel@nongnu.org; Wed, 25 Sep 2024 11:38:07 -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 1stU5d-0004IH-0z for qemu-devel@nongnu.org; Wed, 25 Sep 2024 11:38:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1727278682; 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; bh=Fi6Op7bLKtHOVy+XV+2lbfkyO16OjV7tpDWwTMVknnk=; b=TOvQq2GOYDw+vyw24JZquuRJkAS9+L1epyC+nlOhnGAXd8eax789PTzlQ1IcMC7+gWR6Kh +JjSc5/8aqcVlR5vk5EN912AuHxv5u9/LGldhp45WA0mHXxlhd+lug0xzyTMt+gPgUi5LM +3bmmGPA5YMeZB0LD8TaUJwniMigKRI= 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-582--88WZl7sNgO0Q5gpggBOnw-1; Wed, 25 Sep 2024 11:36:34 -0400 X-MC-Unique: -88WZl7sNgO0Q5gpggBOnw-1 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (unknown [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 7A6DD188FEAD; Wed, 25 Sep 2024 15:36:33 +0000 (UTC) Received: from tpx1cg9.redhat.com (unknown [10.22.8.79]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id A06F219560AA; Wed, 25 Sep 2024 15:36:28 +0000 (UTC) From: Julia Suvorova To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Peter Xu , Marcelo Tosatti , Peter Maydell , Song Gao , Alistair Francis , Daniel Henrique Barboza , Christian Borntraeger , =?utf-8?q?Philippe_Mathi?= =?utf-8?q?eu-Daud=C3=A9?= , Julia Suvorova Subject: [PATCH 0/2] kvm: Improve register failure reports for migration Date: Wed, 25 Sep 2024 17:36:21 +0200 Message-ID: <20240925153625.183600-1-jusual@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=jusual@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=-0.108, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org There were a few bugs with silent cpu failures during migrations [1]. The failures are no longer silent thanks to [2], but still indistinguishable, making diagnostics difficult. This patchset reworks kvm_arch_get/put_registers to handle Error** and return a correct message, with x86_64 as a start. [1] https://issues.redhat.com/browse/RHEL-7558 [2] 7191f24c7fcf "accel/kvm/kvm-all: Handle register access errors" Julia Suvorova (2): kvm: Allow kvm_arch_get/put_registers to accept Error** target/i386/kvm: Report which action failed in kvm_arch_put/get_registers accel/kvm/kvm-all.c | 41 +++++++++++++++++++++++++++++--------- include/sysemu/kvm.h | 4 ++-- target/arm/kvm.c | 4 ++-- target/i386/kvm/kvm.c | 27 +++++++++++++++++++++++-- target/loongarch/kvm/kvm.c | 4 ++-- target/mips/kvm.c | 4 ++-- target/ppc/kvm.c | 2 +- target/riscv/kvm/kvm-cpu.c | 4 ++-- target/s390x/kvm/kvm.c | 4 ++-- 9 files changed, 70 insertions(+), 24 deletions(-)