From nobody Mon Feb 9 20:12:23 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=1566373238; cv=none; d=zoho.com; s=zohoarc; b=c8Uae2inqBW4F6CSndlf+v0gGGd6ePjM6Ch3Xe8Q+mo70GFKvdnKCBys0R1H77XmmeHCC7laAeC62p8RmwWm4KvMHc/DmHlfOg/vC63MzIJjuUqeFXSeJz/m75THKaNGrCfbG1i+pVJuXBTF5O6/LjXIfb4kgEJ8GDwFJDjCeYY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1566373238; 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=1fs++MuRqE016zNI43bnPTOVr42Lr6WzO/8033/7KJc=; b=dy3GBhZIEhtmDtIDv8lE1Sgc8/vuqiQjJYhc5IHi9EEX7nxGobPX8R/N44/wsetQ9pWgHnBkkEvJ1z04bpHsFjdcm+tdQ3965sKR6WnzC+bPGcGcri+pad8WWilPamC1Vbf22XPHyItvxDsoRkWW0ZRe3Gkdkw2BYZtQaJYiwrc= 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 1566373238023945.5368529156253; Wed, 21 Aug 2019 00:40:38 -0700 (PDT) Received: from localhost ([::1]:44546 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i0LES-00040X-Fg for importer@patchew.org; Wed, 21 Aug 2019 03:40:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42183) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i0L0Q-0004XV-FP 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 1i0L0O-000844-8b for qemu-devel@nongnu.org; Wed, 21 Aug 2019 03:26:06 -0400 Received: from ozlabs.org ([203.11.71.1]:33927) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1i0L0N-00080y-M8; Wed, 21 Aug 2019 03:26:04 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 46CzjC1N27z9sPV; 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=1566372351; bh=WXwNYOWKcVD8fT6frteigyYRh/UVz+d5FBWDZT7i9rQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iLNllmOh2zTxqOSj/iwteCxEA7jtU/kdcutl/0Oza9GpLq/FhcfiBcoBmUxPqtmJI 9WL7dRHeG+SZcQ6dv0aCgWpEv7FUCWNJzoDb9BDiIJdyy41r/CtO08zdFjaL8N0RYV hbLcqQ5NZBRZRDWfoIdPh11ThkOLeswbTYteGnM8= From: David Gibson To: peter.maydell@linaro.org Date: Wed, 21 Aug 2019 17:25:15 +1000 Message-Id: <20190821072542.23090-16-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 15/42] spapr: Implement dispatch tracking for tcg 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 Implement cpu_exec_enter/exit on ppc which calls into new methods of the same name in PPCVirtualHypervisorClass. These are used by spapr to implement the splpar VPA dispatch counter initially. Signed-off-by: Nicholas Piggin Message-Id: <20190718034214.14948-2-npiggin@gmail.com> [dwg: Removed unnecessary CONFIG_USER_ONLY checks as suggested by gkurz] Reviewed-by: Greg Kurz Signed-off-by: David Gibson --- hw/ppc/spapr.c | 48 +++++++++++++++++++++++++++++++++ hw/ppc/spapr_hcall.c | 5 ---- include/hw/ppc/spapr.h | 7 +++++ target/ppc/cpu.h | 4 +++ target/ppc/translate_init.inc.c | 27 +++++++++++++++++++ 5 files changed, 86 insertions(+), 5 deletions(-) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 22a45c3737..08cc7c2bd6 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -4306,6 +4306,52 @@ PowerPCCPU *spapr_find_cpu(int vcpu_id) return NULL; } =20 +static void spapr_cpu_exec_enter(PPCVirtualHypervisor *vhyp, PowerPCCPU *c= pu) +{ + SpaprCpuState *spapr_cpu =3D spapr_cpu_state(cpu); + + /* These are only called by TCG, KVM maintains dispatch state */ + + if (spapr_cpu->vpa_addr) { + CPUState *cs =3D CPU(cpu); + uint32_t dispatch; + + dispatch =3D ldl_be_phys(cs->as, + spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER); + dispatch++; + if ((dispatch & 1) !=3D 0) { + qemu_log_mask(LOG_GUEST_ERROR, + "VPA: incorrect dispatch counter value for " + "dispatched partition %u, correcting.\n", dispat= ch); + dispatch++; + } + stl_be_phys(cs->as, + spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER, dispatch); + } +} + +static void spapr_cpu_exec_exit(PPCVirtualHypervisor *vhyp, PowerPCCPU *cp= u) +{ + SpaprCpuState *spapr_cpu =3D spapr_cpu_state(cpu); + + if (spapr_cpu->vpa_addr) { + CPUState *cs =3D CPU(cpu); + uint32_t dispatch; + + dispatch =3D ldl_be_phys(cs->as, + spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER); + dispatch++; + if ((dispatch & 1) !=3D 1) { + qemu_log_mask(LOG_GUEST_ERROR, + "VPA: incorrect dispatch counter value for " + "preempted partition %u, correcting.\n", dispatc= h); + dispatch++; + } + stl_be_phys(cs->as, + spapr_cpu->vpa_addr + VPA_DISPATCH_COUNTER, dispatch); + } +} + static void spapr_machine_class_init(ObjectClass *oc, void *data) { MachineClass *mc =3D MACHINE_CLASS(oc); @@ -4362,6 +4408,8 @@ static void spapr_machine_class_init(ObjectClass *oc,= void *data) vhc->hpte_set_r =3D spapr_hpte_set_r; vhc->get_pate =3D spapr_get_pate; vhc->encode_hpt_for_kvm_pr =3D spapr_encode_hpt_for_kvm_pr; + vhc->cpu_exec_enter =3D spapr_cpu_exec_enter; + vhc->cpu_exec_exit =3D spapr_cpu_exec_exit; xic->ics_get =3D spapr_ics_get; xic->ics_resend =3D spapr_ics_resend; xic->icp_get =3D spapr_icp_get; diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index 47b566882b..4c5ea17250 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -875,11 +875,6 @@ unmap_out: #define FLAGS_DEREGISTER_DTL 0x0000c00000000000ULL #define FLAGS_DEREGISTER_SLBSHADOW 0x0000e00000000000ULL =20 -#define VPA_MIN_SIZE 640 -#define VPA_SIZE_OFFSET 0x4 -#define VPA_SHARED_PROC_OFFSET 0x9 -#define VPA_SHARED_PROC_VAL 0x2 - static target_ulong register_vpa(PowerPCCPU *cpu, target_ulong vpa) { CPUState *cs =3D CPU(cpu); diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 60553d32c4..5d36eec9d0 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -525,6 +525,13 @@ void spapr_register_hypercall(target_ulong opcode, spa= pr_hcall_fn fn); target_ulong spapr_hypercall(PowerPCCPU *cpu, target_ulong opcode, target_ulong *args); =20 +/* Virtual Processor Area structure constants */ +#define VPA_MIN_SIZE 640 +#define VPA_SIZE_OFFSET 0x4 +#define VPA_SHARED_PROC_OFFSET 0x9 +#define VPA_SHARED_PROC_VAL 0x2 +#define VPA_DISPATCH_COUNTER 0x100 + /* ibm,set-eeh-option */ #define RTAS_EEH_DISABLE 0 #define RTAS_EEH_ENABLE 1 diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h index 630a25c246..50245a8c4d 100644 --- a/target/ppc/cpu.h +++ b/target/ppc/cpu.h @@ -1224,6 +1224,10 @@ struct PPCVirtualHypervisorClass { void (*hpte_set_r)(PPCVirtualHypervisor *vhyp, hwaddr ptex, uint64_t p= te1); void (*get_pate)(PPCVirtualHypervisor *vhyp, ppc_v3_pate_t *entry); target_ulong (*encode_hpt_for_kvm_pr)(PPCVirtualHypervisor *vhyp); +#ifndef CONFIG_USER_ONLY + void (*cpu_exec_enter)(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu); + void (*cpu_exec_exit)(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu); +#endif }; =20 #define TYPE_PPC_VIRTUAL_HYPERVISOR "ppc-virtual-hypervisor" diff --git a/target/ppc/translate_init.inc.c b/target/ppc/translate_init.in= c.c index 9cd2033bb9..c9fcd87095 100644 --- a/target/ppc/translate_init.inc.c +++ b/target/ppc/translate_init.inc.c @@ -10469,6 +10469,28 @@ static bool ppc_cpu_is_big_endian(CPUState *cs) =20 return !msr_le; } + +static void ppc_cpu_exec_enter(CPUState *cs) +{ + PowerPCCPU *cpu =3D POWERPC_CPU(cs); + + if (cpu->vhyp) { + PPCVirtualHypervisorClass *vhc =3D + PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp); + vhc->cpu_exec_enter(cpu->vhyp, cpu); + } +} + +static void ppc_cpu_exec_exit(CPUState *cs) +{ + PowerPCCPU *cpu =3D POWERPC_CPU(cs); + + if (cpu->vhyp) { + PPCVirtualHypervisorClass *vhc =3D + PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp); + vhc->cpu_exec_exit(cpu->vhyp, cpu); + } +} #endif =20 static void ppc_cpu_instance_init(Object *obj) @@ -10622,6 +10644,11 @@ static void ppc_cpu_class_init(ObjectClass *oc, vo= id *data) cc->tcg_initialize =3D ppc_translate_init; cc->tlb_fill =3D ppc_cpu_tlb_fill; #endif +#ifndef CONFIG_USER_ONLY + cc->cpu_exec_enter =3D ppc_cpu_exec_enter; + cc->cpu_exec_exit =3D ppc_cpu_exec_exit; +#endif + cc->disas_set_info =3D ppc_disas_set_info; =20 dc->fw_name =3D "PowerPC,UNKNOWN"; --=20 2.21.0