From patchwork Fri Oct 9 10:19:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 303349 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29BBAC433DF for ; Fri, 9 Oct 2020 10:21:45 +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 50E4E22276 for ; Fri, 9 Oct 2020 10:21:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.b="Y4DG8FQx" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 50E4E22276 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gibson.dropbear.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:46838 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kQpWv-00070u-TZ for qemu-devel@archiver.kernel.org; Fri, 09 Oct 2020 06:21:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42974) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kQpVQ-0005AH-2f for qemu-devel@nongnu.org; Fri, 09 Oct 2020 06:20:08 -0400 Received: from ozlabs.org ([2401:3900:2:1::2]:38173) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kQpVM-0001m2-Oq for qemu-devel@nongnu.org; Fri, 09 Oct 2020 06:20:07 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 4C73wW4Qxrz9sTr; Fri, 9 Oct 2020 21:19:55 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1602238795; bh=t2a0wVw8BUpc8Oi6sR1W1FEskafg0a3eFZnFnRt8yNI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Y4DG8FQx90iWMr4j+FS+4wF2SIaQy76d1eboBQzQybht6gmhrfYDbSQq5gtNN/zjW H80wIAMIcAXDrT1m+Uk65UkQPReIini1FfAysaYeur8Go8MO+kjtQkxiufRECsSxg6 CpCTHo2EdnMU9Zxfy83/9cMMhDgc7kGSKaC9my+0= From: David Gibson To: peter.maydell@linaro.org Subject: [PULL 03/20] ppc: Add a return value to ppc_set_compat() and ppc_set_compat_all() Date: Fri, 9 Oct 2020 21:19:34 +1100 Message-Id: <20201009101951.1569252-4-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201009101951.1569252-1-david@gibson.dropbear.id.au> References: <20201009101951.1569252-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 Received-SPF: pass client-ip=2401:3900:2:1::2; envelope-from=dgibson@ozlabs.org; helo=ozlabs.org X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 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: Vladimir Sementsov-Ogievskiy , dbarboza@redhat.com, qemu-devel@nongnu.org, groug@kaod.org, qemu-ppc@nonngu.org, David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Greg Kurz 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 Message-Id: <20200914123505.612812-3-groug@kaod.org> Reviewed-by: Vladimir Sementsov-Ogievskiy Signed-off-by: David Gibson --- target/ppc/compat.c | 26 +++++++++++++++----------- target/ppc/cpu.h | 4 ++-- 2 files changed, 17 insertions(+), 13 deletions(-) diff --git a/target/ppc/compat.c b/target/ppc/compat.c index 08aede88dc..e9bec5ffed 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) diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h index 766e9c5c26..e8aa185d4f 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,