{"id":2224395,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2224395/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260417105618.3621-33-magnuskulke@linux.microsoft.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.2/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260417105618.3621-33-magnuskulke@linux.microsoft.com>","list_archive_url":null,"date":"2026-04-17T10:56:16","name":"[32/34] target/i386/mshv: reconstruct hflags after load","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"be1aafacad16de275f4b349deae7f9ac2385670e","submitter":{"id":90753,"url":"http://patchwork.ozlabs.org/api/1.2/people/90753/?format=json","name":"Magnus Kulke","email":"magnuskulke@linux.microsoft.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260417105618.3621-33-magnuskulke@linux.microsoft.com/mbox/","series":[{"id":500310,"url":"http://patchwork.ozlabs.org/api/1.2/series/500310/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=500310","date":"2026-04-17T10:55:44","name":"Add migration support to the MSHV accelerator","version":1,"mbox":"http://patchwork.ozlabs.org/series/500310/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2224395/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2224395/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=linux.microsoft.com header.i=@linux.microsoft.com\n header.a=rsa-sha256 header.s=default header.b=No5AIdA1;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fxsLx3JGWz1yD3\n\tfor ; Fri, 17 Apr 2026 20:58:49 +1000 (AEST)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from )\n\tid 1wDguC-00062w-TR; Fri, 17 Apr 2026 06:58:37 -0400","from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from )\n id 1wDguA-0005nH-Pr\n for qemu-devel@nongnu.org; Fri, 17 Apr 2026 06:58:34 -0400","from linux.microsoft.com ([13.77.154.182])\n by eggs.gnu.org with esmtp (Exim 4.90_1)\n (envelope-from ) id 1wDgu9-0001sf-2A\n for qemu-devel@nongnu.org; Fri, 17 Apr 2026 06:58:34 -0400","from DESKTOP-TUU1E5L.fritz.box (p5086d620.dip0.t-ipconnect.de\n [80.134.214.32])\n by linux.microsoft.com (Postfix) with ESMTPSA id 8D26B20B6F01;\n Fri, 17 Apr 2026 03:58:19 -0700 (PDT)"],"DKIM-Filter":"OpenDKIM Filter v2.11.0 linux.microsoft.com 8D26B20B6F01","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com;\n s=default; t=1776423502;\n bh=V9VhK8lNuWgkT8PAFGiJyPXqshNdYzIlAfLrYorq9+s=;\n h=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n b=No5AIdA1m4jNMrDjaMfxmZ7+z3OcMWjLsmW/zzj7MD4LHUH/eXsc2wDlMEKSWq5Qi\n WfNekrNgnwYExVWenIMR5taRplwP75wBGGIAIs0E2DA0CTeeCzNkj1m/adG4AxSQkU\n m0aVUpo0rtSG3GoOepzeRzpUaUK4gBEap/ZgMOAA=","From":"Magnus Kulke ","To":"qemu-devel@nongnu.org","Cc":"kvm@vger.kernel.org, Magnus Kulke ,\n Wei Liu , \"Michael S. Tsirkin\" ,\n\t=?utf-8?q?C=C3=A9dric_Le_Goater?= ,\n Zhao Liu ,\n Richard Henderson ,\n Paolo Bonzini , Wei Liu ,\n Magnus Kulke ,\n Alex Williamson ,\n Marcel Apfelbaum , =?utf-8?q?Philippe_Mathieu-D?=\n\t=?utf-8?q?aud=C3=A9?= ,\n Marcelo Tosatti ","Subject":"[PATCH 32/34] target/i386/mshv: reconstruct hflags after load","Date":"Fri, 17 Apr 2026 12:56:16 +0200","Message-Id":"<20260417105618.3621-33-magnuskulke@linux.microsoft.com>","X-Mailer":"git-send-email 2.34.1","In-Reply-To":"<20260417105618.3621-1-magnuskulke@linux.microsoft.com>","References":"<20260417105618.3621-1-magnuskulke@linux.microsoft.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Received-SPF":"pass client-ip=13.77.154.182;\n envelope-from=magnuskulke@linux.microsoft.com; helo=linux.microsoft.com","X-Spam_score_int":"-42","X-Spam_score":"-4.3","X-Spam_bar":"----","X-Spam_report":"(-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_PASS=-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":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"hflags is a cached bitmap derived from standard and special regs. We\nwant to reconstruct this state after regs and sregs have been read from\nthe hypervisor, similar to how it's one in other accelerators.\n\nSigned-off-by: Magnus Kulke \n---\n target/i386/mshv/mshv-cpu.c | 13 +++++++++++++\n 1 file changed, 13 insertions(+)","diff":"diff --git a/target/i386/mshv/mshv-cpu.c b/target/i386/mshv/mshv-cpu.c\nindex 5b0b8bda16..463bf7efa0 100644\n--- a/target/i386/mshv/mshv-cpu.c\n+++ b/target/i386/mshv/mshv-cpu.c\n@@ -814,6 +814,16 @@ static int set_vcpu_events(const CPUState *cpu)\n return 0;\n }\n \n+static int update_hflags(CPUState *cpu)\n+{\n+ X86CPU *x86cpu = X86_CPU(cpu);\n+ CPUX86State *env = &x86cpu->env;\n+\n+ x86_update_hflags(env);\n+\n+ return 0;\n+}\n+\n int mshv_arch_load_vcpu_state(CPUState *cpu)\n {\n int ret;\n@@ -828,6 +838,9 @@ int mshv_arch_load_vcpu_state(CPUState *cpu)\n return ret;\n }\n \n+ /* INVARIANT: hflags are derived from regs+sregs, need to get both first */\n+ update_hflags(cpu);\n+\n ret = get_xc_reg(cpu);\n if (ret < 0) {\n return ret;\n","prefixes":["32/34"]}