From patchwork Tue Jan 19 03:39:12 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 569781 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 536771402EC for ; Tue, 19 Jan 2016 14:42:56 +1100 (AEDT) Received: from localhost ([::1]:34790 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aLNC2-0007Sp-GV for incoming@patchwork.ozlabs.org; Mon, 18 Jan 2016 22:42:54 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60460) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aLN7o-0007t8-Ab for qemu-devel@nongnu.org; Mon, 18 Jan 2016 22:38:33 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aLN7j-0008Gm-LO for qemu-devel@nongnu.org; Mon, 18 Jan 2016 22:38:32 -0500 Received: from ozlabs.org ([103.22.144.67]:39492) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aLN7j-0008Ei-AD; Mon, 18 Jan 2016 22:38:27 -0500 Received: by ozlabs.org (Postfix, from userid 1007) id B1D571402C4; Tue, 19 Jan 2016 14:38:24 +1100 (AEDT) From: David Gibson To: armbru@redhat.com, aik@ozlabs.ru, mdroth@linux.vnet.ibm.com Date: Tue, 19 Jan 2016 14:39:12 +1100 Message-Id: <1453174759-22837-2-git-send-email-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1453174759-22837-1-git-send-email-david@gibson.dropbear.id.au> References: <1453174759-22837-1-git-send-email-david@gibson.dropbear.id.au> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 103.22.144.67 Cc: lvivier@redhat.com, thuth@redhat.com, qemu-ppc@nongnu.org, qemu-devel@nongnu.org, David Gibson Subject: [Qemu-devel] [PATCHv4 1/8] ppc: Cleanup error handling in ppc_set_compat() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 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 Current ppc_set_compat() returns -1 for errors, and also (unconditionally) reports an error message. The caller in h_client_architecture_support() may then report it again using an outdated fprintf(). Clean this up by using the modern error reporting mechanisms. Also add strerror(errno) to the error message. Signed-off-by: David Gibson Reviewed-by: Thomas Huth Reviewed-by: Alexey Kardashevskiy --- hw/ppc/spapr.c | 4 +--- hw/ppc/spapr_hcall.c | 10 +++++----- target-ppc/cpu.h | 2 +- target-ppc/translate_init.c | 13 +++++++------ 4 files changed, 14 insertions(+), 15 deletions(-) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 50e5a26..fa7a7f4 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -1635,9 +1635,7 @@ static void spapr_cpu_init(sPAPRMachineState *spapr, PowerPCCPU *cpu) } if (cpu->max_compat) { - if (ppc_set_compat(cpu, cpu->max_compat) < 0) { - exit(1); - } + ppc_set_compat(cpu, cpu->max_compat, &error_fatal); } xics_cpu_setup(spapr->icp, cpu); diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index cebceea..8b0fcb3 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -837,7 +837,7 @@ static target_ulong cas_get_option_vector(int vector, target_ulong table) typedef struct { PowerPCCPU *cpu; uint32_t cpu_version; - int ret; + Error *err; } SetCompatState; static void do_set_compat(void *arg) @@ -845,7 +845,7 @@ static void do_set_compat(void *arg) SetCompatState *s = arg; cpu_synchronize_state(CPU(s->cpu)); - s->ret = ppc_set_compat(s->cpu, s->cpu_version); + ppc_set_compat(s->cpu, s->cpu_version, &s->err); } #define get_compat_level(cpuver) ( \ @@ -929,13 +929,13 @@ static target_ulong h_client_architecture_support(PowerPCCPU *cpu_, SetCompatState s = { .cpu = POWERPC_CPU(cs), .cpu_version = cpu_version, - .ret = 0 + .err = NULL, }; run_on_cpu(cs, do_set_compat, &s); - if (s.ret < 0) { - fprintf(stderr, "Unable to set compatibility mode\n"); + if (s.err) { + error_report_err(s.err); return H_HARDWARE; } } diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h index 9706000..b3b89e6 100644 --- a/target-ppc/cpu.h +++ b/target-ppc/cpu.h @@ -1210,7 +1210,7 @@ void ppc_store_msr (CPUPPCState *env, target_ulong value); void ppc_cpu_list (FILE *f, fprintf_function cpu_fprintf); int ppc_get_compat_smt_threads(PowerPCCPU *cpu); -int ppc_set_compat(PowerPCCPU *cpu, uint32_t cpu_version); +void ppc_set_compat(PowerPCCPU *cpu, uint32_t cpu_version, Error **errp); /* Time-base and decrementer management */ #ifndef NO_CPU_IO_DEFS diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c index 4ab2d92..678957a 100644 --- a/target-ppc/translate_init.c +++ b/target-ppc/translate_init.c @@ -9186,7 +9186,7 @@ int ppc_get_compat_smt_threads(PowerPCCPU *cpu) return ret; } -int ppc_set_compat(PowerPCCPU *cpu, uint32_t cpu_version) +void ppc_set_compat(PowerPCCPU *cpu, uint32_t cpu_version, Error **errp) { int ret = 0; CPUPPCState *env = &cpu->env; @@ -9208,12 +9208,13 @@ int ppc_set_compat(PowerPCCPU *cpu, uint32_t cpu_version) break; } - if (kvm_enabled() && kvmppc_set_compat(cpu, cpu->cpu_version) < 0) { - error_report("Unable to set compatibility mode in KVM"); - ret = -1; + if (kvm_enabled()) { + ret = kvmppc_set_compat(cpu, cpu->cpu_version); + if (ret < 0) { + error_setg_errno(errp, -ret, + "Unable to set CPU compatibility mode in KVM"); + } } - - return ret; } static gint ppc_cpu_compare_class_pvr(gconstpointer a, gconstpointer b)