From patchwork Mon Sep 14 12:34:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kurz X-Patchwork-Id: 11773661 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8E6EF17D4 for ; Mon, 14 Sep 2020 12:36:36 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 5C58E20759 for ; Mon, 14 Sep 2020 12:36:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5C58E20759 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kaod.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:39302 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kHnil-0008MA-84 for patchwork-qemu-devel@patchwork.kernel.org; Mon, 14 Sep 2020 08:36:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37408) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kHnhZ-0006Se-OT for qemu-devel@nongnu.org; Mon, 14 Sep 2020 08:35:23 -0400 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:51578) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kHnhW-0000bU-UB for qemu-devel@nongnu.org; Mon, 14 Sep 2020 08:35:21 -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-7-nypAO2_oMr-RwPU7Hf4Kww-1; Mon, 14 Sep 2020 08:35:15 -0400 X-MC-Unique: nypAO2_oMr-RwPU7Hf4Kww-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 69C5C64083; Mon, 14 Sep 2020 12:35:14 +0000 (UTC) Received: from bahia.redhat.com (ovpn-112-218.ams2.redhat.com [10.36.112.218]) by smtp.corp.redhat.com (Postfix) with ESMTP id AD2BA1002D41; Mon, 14 Sep 2020 12:35:11 +0000 (UTC) From: Greg Kurz To: qemu-devel@nongnu.org Subject: [PATCH 02/15] ppc: Add a return value to ppc_set_compat() and ppc_set_compat_all() Date: Mon, 14 Sep 2020 14:34:52 +0200 Message-Id: <20200914123505.612812-3-groug@kaod.org> In-Reply-To: <20200914123505.612812-1-groug@kaod.org> References: <20200914123505.612812-1-groug@kaod.org> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=groug@kaod.org X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: kaod.org Received-SPF: softfail client-ip=207.211.31.81; envelope-from=groug@kaod.org; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/14 00:11:19 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -11 X-Spam_score: -1.2 X-Spam_bar: - X-Spam_report: (-1.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665 autolearn=no autolearn_force=no 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: Greg Kurz , Vladimir Sementsov-Ogievskiy , qemu-ppc@nongnu.org, Markus Armbruster , David Gibson Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" As recommended in "qapi/error.h", indicate success / failure with a return value. Since ppc_set_compat() is called from a VMState handler, let's make it an int so that it propagates any negative errno returned by kvmppc_set_compat(). Do the same for ppc_set_compat_all() for consistency, even if it isn't called in a context where a negative errno is required on failure. This will allow to simplify error handling in the callers. Signed-off-by: Greg Kurz Reviewed-by: Vladimir Sementsov-Ogievskiy --- target/ppc/cpu.h | 4 ++-- target/ppc/compat.c | 26 +++++++++++++++----------- 2 files changed, 17 insertions(+), 13 deletions(-) diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h index 766e9c5c26fa..e8aa185d4ff8 100644 --- a/target/ppc/cpu.h +++ b/target/ppc/cpu.h @@ -1352,10 +1352,10 @@ bool ppc_check_compat(PowerPCCPU *cpu, uint32_t compat_pvr, bool ppc_type_check_compat(const char *cputype, uint32_t compat_pvr, uint32_t min_compat_pvr, uint32_t max_compat_pvr); -void ppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr, Error **errp); +int ppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr, Error **errp); #if !defined(CONFIG_USER_ONLY) -void ppc_set_compat_all(uint32_t compat_pvr, Error **errp); +int ppc_set_compat_all(uint32_t compat_pvr, Error **errp); #endif int ppc_compat_max_vthreads(PowerPCCPU *cpu); void ppc_compat_add_property(Object *obj, const char *name, diff --git a/target/ppc/compat.c b/target/ppc/compat.c index 08aede88dc1d..e9bec5ffedbf 100644 --- a/target/ppc/compat.c +++ b/target/ppc/compat.c @@ -158,7 +158,7 @@ bool ppc_type_check_compat(const char *cputype, uint32_t compat_pvr, return pcc_compat(pcc, compat_pvr, min_compat_pvr, max_compat_pvr); } -void ppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr, Error **errp) +int ppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr, Error **errp) { const CompatInfo *compat = compat_by_pvr(compat_pvr); CPUPPCState *env = &cpu->env; @@ -169,11 +169,11 @@ void ppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr, Error **errp) pcr = 0; } else if (!compat) { error_setg(errp, "Unknown compatibility PVR 0x%08"PRIx32, compat_pvr); - return; + return -EINVAL; } else if (!ppc_check_compat(cpu, compat_pvr, 0, 0)) { error_setg(errp, "Compatibility PVR 0x%08"PRIx32" not valid for CPU", compat_pvr); - return; + return -EINVAL; } else { pcr = compat->pcr; } @@ -185,17 +185,19 @@ void ppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr, Error **errp) if (ret < 0) { error_setg_errno(errp, -ret, "Unable to set CPU compatibility mode in KVM"); - return; + return ret; } } cpu->compat_pvr = compat_pvr; env->spr[SPR_PCR] = pcr & pcc->pcr_mask; + return 0; } typedef struct { uint32_t compat_pvr; - Error *err; + Error **errp; + int ret; } SetCompatState; static void do_set_compat(CPUState *cs, run_on_cpu_data arg) @@ -203,26 +205,28 @@ static void do_set_compat(CPUState *cs, run_on_cpu_data arg) PowerPCCPU *cpu = POWERPC_CPU(cs); SetCompatState *s = arg.host_ptr; - ppc_set_compat(cpu, s->compat_pvr, &s->err); + s->ret = ppc_set_compat(cpu, s->compat_pvr, s->errp); } -void ppc_set_compat_all(uint32_t compat_pvr, Error **errp) +int ppc_set_compat_all(uint32_t compat_pvr, Error **errp) { CPUState *cs; CPU_FOREACH(cs) { SetCompatState s = { .compat_pvr = compat_pvr, - .err = NULL, + .errp = errp, + .ret = 0, }; run_on_cpu(cs, do_set_compat, RUN_ON_CPU_HOST_PTR(&s)); - if (s.err) { - error_propagate(errp, s.err); - return; + if (s.ret < 0) { + return s.ret; } } + + return 0; } int ppc_compat_max_vthreads(PowerPCCPU *cpu)