From patchwork Tue Oct 22 16:38:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?C=C3=A9dric_Le_Goater?= X-Patchwork-Id: 11204895 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 3D2C41575 for ; Tue, 22 Oct 2019 16:52:51 +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 0C4312084B for ; Tue, 22 Oct 2019 16:52:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0C4312084B 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]:36296 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iMxOr-0000Vo-Qn for patchwork-qemu-devel@patchwork.kernel.org; Tue, 22 Oct 2019 12:52:49 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41299) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iMxC4-0001e3-DX for qemu-devel@nongnu.org; Tue, 22 Oct 2019 12:39:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iMxC2-0006tE-CO for qemu-devel@nongnu.org; Tue, 22 Oct 2019 12:39:36 -0400 Received: from 4.mo177.mail-out.ovh.net ([46.105.37.72]:45117) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iMxC0-0006ru-8P for qemu-devel@nongnu.org; Tue, 22 Oct 2019 12:39:33 -0400 Received: from player688.ha.ovh.net (unknown [10.109.159.68]) by mo177.mail-out.ovh.net (Postfix) with ESMTP id 2FCBA10D4BB for ; Tue, 22 Oct 2019 18:39:30 +0200 (CEST) Received: from kaod.org (lfbn-1-2229-223.w90-76.abo.wanadoo.fr [90.76.50.223]) (Authenticated sender: clg@kaod.org) by player688.ha.ovh.net (Postfix) with ESMTPSA id BBBAAB32C404; Tue, 22 Oct 2019 16:39:23 +0000 (UTC) From: =?utf-8?q?C=C3=A9dric_Le_Goater?= To: David Gibson Subject: [PATCH v5 5/7] ppc: Reset the interrupt presenter from the CPU reset handler Date: Tue, 22 Oct 2019 18:38:10 +0200 Message-Id: <20191022163812.330-6-clg@kaod.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191022163812.330-1-clg@kaod.org> References: <20191022163812.330-1-clg@kaod.org> MIME-Version: 1.0 X-Ovh-Tracer-Id: 3513370660358818790 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedufedrkeejgddutdefucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecuhedttdenucesvcftvggtihhpihgvnhhtshculddquddttddm X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 46.105.37.72 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: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , =?utf-8?q?C?= =?utf-8?q?=C3=A9dric_Le_Goater?= , qemu-ppc@nongnu.org, qemu-devel@nongnu.org, Greg Kurz Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" On the sPAPR machine and PowerNV machine, the interrupt presenters are created by a machine handler at the core level and are reset independently. This is not consistent and it raises issues when it comes to handle hot-plugged CPUs. In that case, the presenters are not reset. This is less of an issue in XICS, although a zero MFFR could be a concern, but in XIVE, the OS CAM line is not set and this breaks the presenting algorithm. The current code has workarounds which need a global cleanup. Extend the sPAPR IRQ backend and the PowerNV Chip class with a new cpu_intc_reset() handler called by the CPU reset handler and remove the XiveTCTX reset handler which is now redundant. Signed-off-by: Cédric Le Goater Reviewed-by: Greg Kurz Reviewed-by: Philippe Mathieu-Daudé --- include/hw/ppc/pnv.h | 1 + include/hw/ppc/spapr_irq.h | 2 ++ include/hw/ppc/xics.h | 1 + include/hw/ppc/xive.h | 1 + hw/intc/spapr_xive.c | 9 +++++++++ hw/intc/xics.c | 8 ++------ hw/intc/xics_spapr.c | 7 +++++++ hw/intc/xive.c | 12 +----------- hw/ppc/pnv.c | 18 ++++++++++++++++++ hw/ppc/pnv_core.c | 7 +++++-- hw/ppc/spapr_cpu_core.c | 5 ++++- hw/ppc/spapr_irq.c | 14 ++++++++++++++ 12 files changed, 65 insertions(+), 20 deletions(-) diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h index 1cdbe55bf86c..2a780e633f23 100644 --- a/include/hw/ppc/pnv.h +++ b/include/hw/ppc/pnv.h @@ -111,6 +111,7 @@ typedef struct PnvChipClass { uint32_t (*core_pir)(PnvChip *chip, uint32_t core_id); void (*intc_create)(PnvChip *chip, PowerPCCPU *cpu, Error **errp); + void (*intc_reset)(PnvChip *chip, PowerPCCPU *cpu); ISABus *(*isa_create)(PnvChip *chip, Error **errp); void (*dt_populate)(PnvChip *chip, void *fdt); void (*pic_print_info)(PnvChip *chip, Monitor *mon); diff --git a/include/hw/ppc/spapr_irq.h b/include/hw/ppc/spapr_irq.h index 5e150a667902..09232999b07e 100644 --- a/include/hw/ppc/spapr_irq.h +++ b/include/hw/ppc/spapr_irq.h @@ -52,6 +52,7 @@ typedef struct SpaprInterruptControllerClass { */ int (*cpu_intc_create)(SpaprInterruptController *intc, PowerPCCPU *cpu, Error **errp); + void (*cpu_intc_reset)(SpaprInterruptController *intc, PowerPCCPU *cpu); int (*claim_irq)(SpaprInterruptController *intc, int irq, bool lsi, Error **errp); void (*free_irq)(SpaprInterruptController *intc, int irq); @@ -68,6 +69,7 @@ void spapr_irq_update_active_intc(SpaprMachineState *spapr); int spapr_irq_cpu_intc_create(SpaprMachineState *spapr, PowerPCCPU *cpu, Error **errp); +void spapr_irq_cpu_intc_reset(SpaprMachineState *spapr, PowerPCCPU *cpu); void spapr_irq_print_info(SpaprMachineState *spapr, Monitor *mon); void spapr_irq_dt(SpaprMachineState *spapr, uint32_t nr_servers, void *fdt, uint32_t phandle); diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h index 1e6a9300eb2b..602173c12250 100644 --- a/include/hw/ppc/xics.h +++ b/include/hw/ppc/xics.h @@ -161,6 +161,7 @@ void icp_set_mfrr(ICPState *icp, uint8_t mfrr); uint32_t icp_accept(ICPState *ss); uint32_t icp_ipoll(ICPState *ss, uint32_t *mfrr); void icp_eoi(ICPState *icp, uint32_t xirr); +void icp_reset(ICPState *icp); void ics_write_xive(ICSState *ics, int nr, int server, uint8_t priority, uint8_t saved_priority); diff --git a/include/hw/ppc/xive.h b/include/hw/ppc/xive.h index fd3319bd3202..99381639f50c 100644 --- a/include/hw/ppc/xive.h +++ b/include/hw/ppc/xive.h @@ -415,6 +415,7 @@ uint64_t xive_tctx_tm_read(XiveTCTX *tctx, hwaddr offset, unsigned size); void xive_tctx_pic_print_info(XiveTCTX *tctx, Monitor *mon); Object *xive_tctx_create(Object *cpu, XiveRouter *xrtr, Error **errp); +void xive_tctx_reset(XiveTCTX *tctx); static inline uint32_t xive_nvt_cam_line(uint8_t nvt_blk, uint32_t nvt_idx) { diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index ba32d2cc5b0f..20a8d8285f64 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -553,6 +553,14 @@ static int spapr_xive_cpu_intc_create(SpaprInterruptController *intc, return 0; } +static void spapr_xive_cpu_intc_reset(SpaprInterruptController *intc, + PowerPCCPU *cpu) +{ + XiveTCTX *tctx = spapr_cpu_state(cpu)->tctx; + + xive_tctx_reset(tctx); +} + static void spapr_xive_set_irq(SpaprInterruptController *intc, int irq, int val) { SpaprXive *xive = SPAPR_XIVE(intc); @@ -697,6 +705,7 @@ static void spapr_xive_class_init(ObjectClass *klass, void *data) sicc->activate = spapr_xive_activate; sicc->deactivate = spapr_xive_deactivate; sicc->cpu_intc_create = spapr_xive_cpu_intc_create; + sicc->cpu_intc_reset = spapr_xive_cpu_intc_reset; sicc->claim_irq = spapr_xive_claim_irq; sicc->free_irq = spapr_xive_free_irq; sicc->set_irq = spapr_xive_set_irq; diff --git a/hw/intc/xics.c b/hw/intc/xics.c index b5ac408f7b74..6da05763f9db 100644 --- a/hw/intc/xics.c +++ b/hw/intc/xics.c @@ -274,10 +274,8 @@ static const VMStateDescription vmstate_icp_server = { }, }; -static void icp_reset_handler(void *dev) +void icp_reset(ICPState *icp) { - ICPState *icp = ICP(dev); - icp->xirr = 0; icp->pending_priority = 0xff; icp->mfrr = 0xff; @@ -288,7 +286,7 @@ static void icp_reset_handler(void *dev) if (kvm_irqchip_in_kernel()) { Error *local_err = NULL; - icp_set_kvm_state(ICP(dev), &local_err); + icp_set_kvm_state(icp, &local_err); if (local_err) { error_report_err(local_err); } @@ -351,7 +349,6 @@ static void icp_realize(DeviceState *dev, Error **errp) } } - qemu_register_reset(icp_reset_handler, dev); vmstate_register(NULL, icp->cs->cpu_index, &vmstate_icp_server, icp); } @@ -360,7 +357,6 @@ static void icp_unrealize(DeviceState *dev, Error **errp) ICPState *icp = ICP(dev); vmstate_unregister(NULL, &vmstate_icp_server, icp); - qemu_unregister_reset(icp_reset_handler, dev); } static void icp_class_init(ObjectClass *klass, void *data) diff --git a/hw/intc/xics_spapr.c b/hw/intc/xics_spapr.c index 4f64b9a9fc66..7418fb9f370c 100644 --- a/hw/intc/xics_spapr.c +++ b/hw/intc/xics_spapr.c @@ -346,6 +346,12 @@ static int xics_spapr_cpu_intc_create(SpaprInterruptController *intc, return 0; } +static void xics_spapr_cpu_intc_reset(SpaprInterruptController *intc, + PowerPCCPU *cpu) +{ + icp_reset(spapr_cpu_state(cpu)->icp); +} + static int xics_spapr_claim_irq(SpaprInterruptController *intc, int irq, bool lsi, Error **errp) { @@ -433,6 +439,7 @@ static void ics_spapr_class_init(ObjectClass *klass, void *data) sicc->activate = xics_spapr_activate; sicc->deactivate = xics_spapr_deactivate; sicc->cpu_intc_create = xics_spapr_cpu_intc_create; + sicc->cpu_intc_reset = xics_spapr_cpu_intc_reset; sicc->claim_irq = xics_spapr_claim_irq; sicc->free_irq = xics_spapr_free_irq; sicc->set_irq = xics_spapr_set_irq; diff --git a/hw/intc/xive.c b/hw/intc/xive.c index d420c6571e14..f066be5eb5e3 100644 --- a/hw/intc/xive.c +++ b/hw/intc/xive.c @@ -547,10 +547,8 @@ void xive_tctx_pic_print_info(XiveTCTX *tctx, Monitor *mon) } } -static void xive_tctx_reset(void *dev) +void xive_tctx_reset(XiveTCTX *tctx) { - XiveTCTX *tctx = XIVE_TCTX(dev); - memset(tctx->regs, 0, sizeof(tctx->regs)); /* Set some defaults */ @@ -607,13 +605,6 @@ static void xive_tctx_realize(DeviceState *dev, Error **errp) return; } } - - qemu_register_reset(xive_tctx_reset, dev); -} - -static void xive_tctx_unrealize(DeviceState *dev, Error **errp) -{ - qemu_unregister_reset(xive_tctx_reset, dev); } static int vmstate_xive_tctx_pre_save(void *opaque) @@ -668,7 +659,6 @@ static void xive_tctx_class_init(ObjectClass *klass, void *data) dc->desc = "XIVE Interrupt Thread Context"; dc->realize = xive_tctx_realize; - dc->unrealize = xive_tctx_unrealize; dc->vmsd = &vmstate_xive_tctx; /* * Reason: part of XIVE interrupt controller, needs to be wired up diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index 7cf64b6d2533..4a51fb65a834 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -778,6 +778,13 @@ static void pnv_chip_power8_intc_create(PnvChip *chip, PowerPCCPU *cpu, pnv_cpu->intc = obj; } +static void pnv_chip_power8_intc_reset(PnvChip *chip, PowerPCCPU *cpu) +{ + PnvCPUState *pnv_cpu = pnv_cpu_state(cpu); + + icp_reset(ICP(pnv_cpu->intc)); +} + /* * 0:48 Reserved - Read as zeroes * 49:52 Node ID @@ -815,6 +822,13 @@ static void pnv_chip_power9_intc_create(PnvChip *chip, PowerPCCPU *cpu, pnv_cpu->intc = obj; } +static void pnv_chip_power9_intc_reset(PnvChip *chip, PowerPCCPU *cpu) +{ + PnvCPUState *pnv_cpu = pnv_cpu_state(cpu); + + xive_tctx_reset(XIVE_TCTX(pnv_cpu->intc)); +} + /* * Allowed core identifiers on a POWER8 Processor Chip : * @@ -984,6 +998,7 @@ static void pnv_chip_power8e_class_init(ObjectClass *klass, void *data) k->cores_mask = POWER8E_CORE_MASK; k->core_pir = pnv_chip_core_pir_p8; k->intc_create = pnv_chip_power8_intc_create; + k->intc_reset = pnv_chip_power8_intc_reset; k->isa_create = pnv_chip_power8_isa_create; k->dt_populate = pnv_chip_power8_dt_populate; k->pic_print_info = pnv_chip_power8_pic_print_info; @@ -1003,6 +1018,7 @@ static void pnv_chip_power8_class_init(ObjectClass *klass, void *data) k->cores_mask = POWER8_CORE_MASK; k->core_pir = pnv_chip_core_pir_p8; k->intc_create = pnv_chip_power8_intc_create; + k->intc_reset = pnv_chip_power8_intc_reset; k->isa_create = pnv_chip_power8_isa_create; k->dt_populate = pnv_chip_power8_dt_populate; k->pic_print_info = pnv_chip_power8_pic_print_info; @@ -1022,6 +1038,7 @@ static void pnv_chip_power8nvl_class_init(ObjectClass *klass, void *data) k->cores_mask = POWER8_CORE_MASK; k->core_pir = pnv_chip_core_pir_p8; k->intc_create = pnv_chip_power8_intc_create; + k->intc_reset = pnv_chip_power8_intc_reset; k->isa_create = pnv_chip_power8nvl_isa_create; k->dt_populate = pnv_chip_power8_dt_populate; k->pic_print_info = pnv_chip_power8_pic_print_info; @@ -1191,6 +1208,7 @@ static void pnv_chip_power9_class_init(ObjectClass *klass, void *data) k->cores_mask = POWER9_CORE_MASK; k->core_pir = pnv_chip_core_pir_p9; k->intc_create = pnv_chip_power9_intc_create; + k->intc_reset = pnv_chip_power9_intc_reset; k->isa_create = pnv_chip_power9_isa_create; k->dt_populate = pnv_chip_power9_dt_populate; k->pic_print_info = pnv_chip_power9_pic_print_info; diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c index cc17bbfed829..be0310ac0340 100644 --- a/hw/ppc/pnv_core.c +++ b/hw/ppc/pnv_core.c @@ -40,10 +40,11 @@ static const char *pnv_core_cpu_typename(PnvCore *pc) return cpu_type; } -static void pnv_core_cpu_reset(PowerPCCPU *cpu) +static void pnv_core_cpu_reset(PowerPCCPU *cpu, PnvChip *chip) { CPUState *cs = CPU(cpu); CPUPPCState *env = &cpu->env; + PnvChipClass *pcc = PNV_CHIP_GET_CLASS(chip); cpu_reset(cs); @@ -54,6 +55,8 @@ static void pnv_core_cpu_reset(PowerPCCPU *cpu) env->gpr[3] = PNV_FDT_ADDR; env->nip = 0x10; env->msr |= MSR_HVB; /* Hypervisor mode */ + + pcc->intc_reset(chip, cpu); } /* @@ -200,7 +203,7 @@ static void pnv_core_reset(void *dev) int i; for (i = 0; i < cc->nr_threads; i++) { - pnv_core_cpu_reset(pc->threads[i]); + pnv_core_cpu_reset(pc->threads[i], pc->chip); } } diff --git a/hw/ppc/spapr_cpu_core.c b/hw/ppc/spapr_cpu_core.c index 2e34832d0ea2..ef7b27a66d56 100644 --- a/hw/ppc/spapr_cpu_core.c +++ b/hw/ppc/spapr_cpu_core.c @@ -32,6 +32,7 @@ static void spapr_reset_vcpu(PowerPCCPU *cpu) PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu); SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); target_ulong lpcr; + SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); cpu_reset(cs); @@ -76,9 +77,11 @@ static void spapr_reset_vcpu(PowerPCCPU *cpu) spapr_cpu->dtl_addr = 0; spapr_cpu->dtl_size = 0; - spapr_caps_cpu_apply(SPAPR_MACHINE(qdev_get_machine()), cpu); + spapr_caps_cpu_apply(spapr, cpu); kvm_check_mmu(cpu, &error_fatal); + + spapr_irq_cpu_intc_reset(spapr, cpu); } void spapr_cpu_set_entry_state(PowerPCCPU *cpu, target_ulong nip, target_ulong r3) diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c index 234d1073e518..b941608b69ba 100644 --- a/hw/ppc/spapr_irq.c +++ b/hw/ppc/spapr_irq.c @@ -220,6 +220,20 @@ int spapr_irq_cpu_intc_create(SpaprMachineState *spapr, return 0; } +void spapr_irq_cpu_intc_reset(SpaprMachineState *spapr, PowerPCCPU *cpu) +{ + SpaprInterruptController *intcs[] = ALL_INTCS(spapr); + int i; + + for (i = 0; i < ARRAY_SIZE(intcs); i++) { + SpaprInterruptController *intc = intcs[i]; + if (intc) { + SpaprInterruptControllerClass *sicc = SPAPR_INTC_GET_CLASS(intc); + sicc->cpu_intc_reset(intc, cpu); + } + } +} + static void spapr_set_irq(void *opaque, int irq, int level) { SpaprMachineState *spapr = SPAPR_MACHINE(opaque);