From nobody Tue Feb 10 01:33:10 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1566373537; cv=none; d=zoho.com; s=zohoarc; b=P/T5fxF5YLHfQiIVLC0yFYq0xEKfglCu+slZSHNO6DMF1Un0/as3qtg9sARDvup2D6BIuasPshtNv3TMKq+n7wJwVc0eK3WrDQ0HQnLNEHPu3EraWPc5vfX1sms/7R3XR6rgWWzR//CeWbERjpWQz0gGsKCf2RG9LJpqI7KIj48= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1566373537; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=1ZePjqwaGCRhd8C6i8uT+g2T6YIrgUX1Fs7i8xI7mVw=; b=Xj6V1kG3lxetw6RctjmMIa+3m3M0wxzkHsha9X09VGTNfsj2Wjh2vD1sJCQc1yGiLFJ5pY/+tdckMjDLO/It3UgYoJCtnFMo2VS1oU2I/o0UufxA4LovSDelev/gmPfh/cblbH+mcqvlkj/RLDNXDAl6gjpS7t/EC4E50SGF5tw= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1566373537750945.1584346514184; Wed, 21 Aug 2019 00:45:37 -0700 (PDT) Received: from localhost ([::1]:44600 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i0LJC-0002G4-2K for importer@patchew.org; Wed, 21 Aug 2019 03:45:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42223) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i0L0R-0004Zy-R8 for qemu-devel@nongnu.org; Wed, 21 Aug 2019 03:26:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i0L0Q-000853-8B for qemu-devel@nongnu.org; Wed, 21 Aug 2019 03:26:07 -0400 Received: from ozlabs.org ([203.11.71.1]:44371) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1i0L0N-0007zp-QY; Wed, 21 Aug 2019 03:26:04 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 46CzjB1GyDz9sQn; Wed, 21 Aug 2019 17:25:49 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1566372350; bh=+ll5cKS8GpOsg1khTBTggYL8D2mfNQnbIIz1+Y1r/oc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=azlSd8yrrBNnQcLtQ/iPF/8qkBll2P8rZUH5mD+8UVayCCFCplNMTJ6+GP8SXcE2k B8Ds2FvN+wOLCMvVwFb9SPQ+iwshZ4TzoRzoJUwZGcNP7bb+RRJ8ljaX04BT7a29Vq zubuzSg18TBzVJ6pHNFTSdhFAK2C4ySK8fkwNj6g= From: David Gibson To: peter.maydell@linaro.org Date: Wed, 21 Aug 2019 17:25:16 +1000 Message-Id: <20190821072542.23090-17-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190821072542.23090-1-david@gibson.dropbear.id.au> References: <20190821072542.23090-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 203.11.71.1 Subject: [Qemu-devel] [PULL 16/42] spapr: Implement H_PROD 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: lvivier@redhat.com, aik@ozlabs.ru, qemu-devel@nongnu.org, Nicholas Piggin , groug@kaod.org, qemu-ppc@nongnu.org, David Gibson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: Nicholas Piggin H_PROD is added, and H_CEDE is modified to test the prod bit according to PAPR. Signed-off-by: Nicholas Piggin Message-Id: <20190718034214.14948-3-npiggin@gmail.com> Reviewed-by: Greg Kurz Signed-off-by: David Gibson --- hw/ppc/spapr.c | 1 + hw/ppc/spapr_hcall.c | 32 ++++++++++++++++++++++++++++++++ include/hw/ppc/spapr_cpu_core.h | 1 + 3 files changed, 34 insertions(+) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 08cc7c2bd6..0890c2840f 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -4312,6 +4312,7 @@ static void spapr_cpu_exec_enter(PPCVirtualHypervisor= *vhyp, PowerPCCPU *cpu) =20 /* These are only called by TCG, KVM maintains dispatch state */ =20 + spapr_cpu->prod =3D false; if (spapr_cpu->vpa_addr) { CPUState *cs =3D CPU(cpu); uint32_t dispatch; diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index 4c5ea17250..dd584da1ce 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -1051,14 +1051,44 @@ static target_ulong h_cede(PowerPCCPU *cpu, SpaprMa= chineState *spapr, { CPUPPCState *env =3D &cpu->env; CPUState *cs =3D CPU(cpu); + SpaprCpuState *spapr_cpu =3D spapr_cpu_state(cpu); =20 env->msr |=3D (1ULL << MSR_EE); hreg_compute_hflags(env); + + if (spapr_cpu->prod) { + spapr_cpu->prod =3D false; + return H_SUCCESS; + } + if (!cpu_has_work(cs)) { cs->halted =3D 1; cs->exception_index =3D EXCP_HLT; cs->exit_request =3D 1; } + + return H_SUCCESS; +} + +static target_ulong h_prod(PowerPCCPU *cpu, SpaprMachineState *spapr, + target_ulong opcode, target_ulong *args) +{ + target_long target =3D args[0]; + PowerPCCPU *tcpu; + CPUState *cs; + SpaprCpuState *spapr_cpu; + + tcpu =3D spapr_find_cpu(target); + cs =3D CPU(tcpu); + if (!cs) { + return H_PARAMETER; + } + + spapr_cpu =3D spapr_cpu_state(tcpu); + spapr_cpu->prod =3D true; + cs->halted =3D 0; + qemu_cpu_kick(cs); + return H_SUCCESS; } =20 @@ -1885,6 +1915,8 @@ static void hypercall_register_types(void) /* hcall-splpar */ spapr_register_hypercall(H_REGISTER_VPA, h_register_vpa); spapr_register_hypercall(H_CEDE, h_cede); + spapr_register_hypercall(H_PROD, h_prod); + spapr_register_hypercall(H_SIGNAL_SYS_RESET, h_signal_sys_reset); =20 /* processor register resource access h-calls */ diff --git a/include/hw/ppc/spapr_cpu_core.h b/include/hw/ppc/spapr_cpu_cor= e.h index 35e0a7eead..1c4cc6559c 100644 --- a/include/hw/ppc/spapr_cpu_core.h +++ b/include/hw/ppc/spapr_cpu_core.h @@ -46,6 +46,7 @@ typedef struct SpaprCpuState { uint64_t vpa_addr; uint64_t slb_shadow_addr, slb_shadow_size; uint64_t dtl_addr, dtl_size; + bool prod; /* not migrated, only used to improve dispatch latencies */ struct ICPState *icp; struct XiveTCTX *tctx; } SpaprCpuState; --=20 2.21.0