From nobody Mon Feb 9 17:37:08 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=1571916078; cv=none; d=zoho.com; s=zohoarc; b=hsISEI020b5K3IJgS4GHFoq+k1/dRXYN8d6wl2RrY3+J+klDimTrQNeLbsXe3FeYZa6cM98EZqlt5Kf7nALSwAs8qYaMSWW2ILFUETurDiomWof+FWZvubIurFUr9IcQAjOAuMQdPaWAg52wdJVCX0VVJX912gxmVa3H7vOxkbU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1571916078; h=Content-Type: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; bh=r14l2pqxTgE5UkTRl5DGqiBJPnfZ4L8iPmVPIClkwhY=; b=F1408dc9vu+KTamXX/0AMTgvTFM4d66kO0tfU7zmxDjOVMoPqtX/m+gDuNlJvgBEtoD6FxliF3tRBZ4ETDptZ39SRAcLIz7rUDUkTrcL1KY4ldg+GuSM4hghC1e58MI3W0zwlvBwwt2fgsQjAs6U8q/V1WXkZsd7MuPU16/Iq8E= 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 1571916078907211.02210749348; Thu, 24 Oct 2019 04:21:18 -0700 (PDT) Received: from localhost ([::1]:35176 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNYh6-0003Ci-JO for importer@patchew.org; Thu, 24 Oct 2019 04:42:08 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37018) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNYKw-0005ek-Ek for qemu-devel@nongnu.org; Thu, 24 Oct 2019 04:19:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iNYKu-000636-A1 for qemu-devel@nongnu.org; Thu, 24 Oct 2019 04:19:14 -0400 Received: from bilbo.ozlabs.org ([2401:3900:2:1::2]:57411 helo=ozlabs.org) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iNYKt-0005LF-3G; Thu, 24 Oct 2019 04:19:12 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 46zKrc37hxz9sSF; Thu, 24 Oct 2019 19:18:38 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1571905120; bh=Ka1Ggpk4WXltmaabL+Ppf3sWhfAmXmA7mulQQ7mDOLQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jTjMZZr0CZYEV9ahAF1NGassMIDnFrT3XYqKNB4sIYH+Yd3rTCvKZOSBWghyvk8Mm F/sfZ9H56k7bAzL6F4p3Vfd5wPDDcgnEBKNS5zS4pJM5c81sAWRp29V+kE5yhgoQSA utCUzOMC+KtKtPZKeoZz5SReLHlnxx7nF6HDUVu0= From: David Gibson To: peter.maydell@linaro.org Subject: [PULL 26/28] ppc: Reset the interrupt presenter from the CPU reset handler Date: Thu, 24 Oct 2019 19:18:11 +1100 Message-Id: <20191024081813.2115-27-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191024081813.2115-1-david@gibson.dropbear.id.au> References: <20191024081813.2115-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2401:3900:2:1::2 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, qemu-devel@nongnu.org, groug@kaod.org, qemu-ppc@nongnu.org, clg@kaod.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , 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: C=C3=A9dric Le Goater 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: C=C3=A9dric Le Goater Message-Id: <20191022163812.330-6-clg@kaod.org> Reviewed-by: Greg Kurz Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: David Gibson --- 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 ++++++++++++++ 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 + 12 files changed, 65 insertions(+), 20 deletions(-) diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index ba32d2cc5b..20a8d8285f 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -553,6 +553,14 @@ static int spapr_xive_cpu_intc_create(SpaprInterruptCo= ntroller *intc, return 0; } =20 +static void spapr_xive_cpu_intc_reset(SpaprInterruptController *intc, + PowerPCCPU *cpu) +{ + XiveTCTX *tctx =3D spapr_cpu_state(cpu)->tctx; + + xive_tctx_reset(tctx); +} + static void spapr_xive_set_irq(SpaprInterruptController *intc, int irq, in= t val) { SpaprXive *xive =3D SPAPR_XIVE(intc); @@ -697,6 +705,7 @@ static void spapr_xive_class_init(ObjectClass *klass, v= oid *data) sicc->activate =3D spapr_xive_activate; sicc->deactivate =3D spapr_xive_deactivate; sicc->cpu_intc_create =3D spapr_xive_cpu_intc_create; + sicc->cpu_intc_reset =3D spapr_xive_cpu_intc_reset; sicc->claim_irq =3D spapr_xive_claim_irq; sicc->free_irq =3D spapr_xive_free_irq; sicc->set_irq =3D spapr_xive_set_irq; diff --git a/hw/intc/xics.c b/hw/intc/xics.c index b5ac408f7b..6da05763f9 100644 --- a/hw/intc/xics.c +++ b/hw/intc/xics.c @@ -274,10 +274,8 @@ static const VMStateDescription vmstate_icp_server =3D= { }, }; =20 -static void icp_reset_handler(void *dev) +void icp_reset(ICPState *icp) { - ICPState *icp =3D ICP(dev); - icp->xirr =3D 0; icp->pending_priority =3D 0xff; icp->mfrr =3D 0xff; @@ -288,7 +286,7 @@ static void icp_reset_handler(void *dev) if (kvm_irqchip_in_kernel()) { Error *local_err =3D NULL; =20 - 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) } } =20 - qemu_register_reset(icp_reset_handler, dev); vmstate_register(NULL, icp->cs->cpu_index, &vmstate_icp_server, icp); } =20 @@ -360,7 +357,6 @@ static void icp_unrealize(DeviceState *dev, Error **err= p) ICPState *icp =3D ICP(dev); =20 vmstate_unregister(NULL, &vmstate_icp_server, icp); - qemu_unregister_reset(icp_reset_handler, dev); } =20 static void icp_class_init(ObjectClass *klass, void *data) diff --git a/hw/intc/xics_spapr.c b/hw/intc/xics_spapr.c index 4f64b9a9fc..7418fb9f37 100644 --- a/hw/intc/xics_spapr.c +++ b/hw/intc/xics_spapr.c @@ -346,6 +346,12 @@ static int xics_spapr_cpu_intc_create(SpaprInterruptCo= ntroller *intc, return 0; } =20 +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, vo= id *data) sicc->activate =3D xics_spapr_activate; sicc->deactivate =3D xics_spapr_deactivate; sicc->cpu_intc_create =3D xics_spapr_cpu_intc_create; + sicc->cpu_intc_reset =3D xics_spapr_cpu_intc_reset; sicc->claim_irq =3D xics_spapr_claim_irq; sicc->free_irq =3D xics_spapr_free_irq; sicc->set_irq =3D xics_spapr_set_irq; diff --git a/hw/intc/xive.c b/hw/intc/xive.c index d420c6571e..f066be5eb5 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) } } =20 -static void xive_tctx_reset(void *dev) +void xive_tctx_reset(XiveTCTX *tctx) { - XiveTCTX *tctx =3D XIVE_TCTX(dev); - memset(tctx->regs, 0, sizeof(tctx->regs)); =20 /* 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); } =20 static int vmstate_xive_tctx_pre_save(void *opaque) @@ -668,7 +659,6 @@ static void xive_tctx_class_init(ObjectClass *klass, vo= id *data) =20 dc->desc =3D "XIVE Interrupt Thread Context"; dc->realize =3D xive_tctx_realize; - dc->unrealize =3D xive_tctx_unrealize; dc->vmsd =3D &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 7cf64b6d25..4a51fb65a8 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 =3D obj; } =20 +static void pnv_chip_power8_intc_reset(PnvChip *chip, PowerPCCPU *cpu) +{ + PnvCPUState *pnv_cpu =3D 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 =3D obj; } =20 +static void pnv_chip_power9_intc_reset(PnvChip *chip, PowerPCCPU *cpu) +{ + PnvCPUState *pnv_cpu =3D 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 *kl= ass, void *data) k->cores_mask =3D POWER8E_CORE_MASK; k->core_pir =3D pnv_chip_core_pir_p8; k->intc_create =3D pnv_chip_power8_intc_create; + k->intc_reset =3D pnv_chip_power8_intc_reset; k->isa_create =3D pnv_chip_power8_isa_create; k->dt_populate =3D pnv_chip_power8_dt_populate; k->pic_print_info =3D pnv_chip_power8_pic_print_info; @@ -1003,6 +1018,7 @@ static void pnv_chip_power8_class_init(ObjectClass *k= lass, void *data) k->cores_mask =3D POWER8_CORE_MASK; k->core_pir =3D pnv_chip_core_pir_p8; k->intc_create =3D pnv_chip_power8_intc_create; + k->intc_reset =3D pnv_chip_power8_intc_reset; k->isa_create =3D pnv_chip_power8_isa_create; k->dt_populate =3D pnv_chip_power8_dt_populate; k->pic_print_info =3D pnv_chip_power8_pic_print_info; @@ -1022,6 +1038,7 @@ static void pnv_chip_power8nvl_class_init(ObjectClass= *klass, void *data) k->cores_mask =3D POWER8_CORE_MASK; k->core_pir =3D pnv_chip_core_pir_p8; k->intc_create =3D pnv_chip_power8_intc_create; + k->intc_reset =3D pnv_chip_power8_intc_reset; k->isa_create =3D pnv_chip_power8nvl_isa_create; k->dt_populate =3D pnv_chip_power8_dt_populate; k->pic_print_info =3D pnv_chip_power8_pic_print_info; @@ -1191,6 +1208,7 @@ static void pnv_chip_power9_class_init(ObjectClass *k= lass, void *data) k->cores_mask =3D POWER9_CORE_MASK; k->core_pir =3D pnv_chip_core_pir_p9; k->intc_create =3D pnv_chip_power9_intc_create; + k->intc_reset =3D pnv_chip_power9_intc_reset; k->isa_create =3D pnv_chip_power9_isa_create; k->dt_populate =3D pnv_chip_power9_dt_populate; k->pic_print_info =3D pnv_chip_power9_pic_print_info; diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c index cc17bbfed8..be0310ac03 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; } =20 -static void pnv_core_cpu_reset(PowerPCCPU *cpu) +static void pnv_core_cpu_reset(PowerPCCPU *cpu, PnvChip *chip) { CPUState *cs =3D CPU(cpu); CPUPPCState *env =3D &cpu->env; + PnvChipClass *pcc =3D PNV_CHIP_GET_CLASS(chip); =20 cpu_reset(cs); =20 @@ -54,6 +55,8 @@ static void pnv_core_cpu_reset(PowerPCCPU *cpu) env->gpr[3] =3D PNV_FDT_ADDR; env->nip =3D 0x10; env->msr |=3D MSR_HVB; /* Hypervisor mode */ + + pcc->intc_reset(chip, cpu); } =20 /* @@ -200,7 +203,7 @@ static void pnv_core_reset(void *dev) int i; =20 for (i =3D 0; i < cc->nr_threads; i++) { - pnv_core_cpu_reset(pc->threads[i]); + pnv_core_cpu_reset(pc->threads[i], pc->chip); } } =20 diff --git a/hw/ppc/spapr_cpu_core.c b/hw/ppc/spapr_cpu_core.c index 2e34832d0e..ef7b27a66d 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 =3D POWERPC_CPU_GET_CLASS(cpu); SpaprCpuState *spapr_cpu =3D spapr_cpu_state(cpu); target_ulong lpcr; + SpaprMachineState *spapr =3D SPAPR_MACHINE(qdev_get_machine()); =20 cpu_reset(cs); =20 @@ -76,9 +77,11 @@ static void spapr_reset_vcpu(PowerPCCPU *cpu) spapr_cpu->dtl_addr =3D 0; spapr_cpu->dtl_size =3D 0; =20 - spapr_caps_cpu_apply(SPAPR_MACHINE(qdev_get_machine()), cpu); + spapr_caps_cpu_apply(spapr, cpu); =20 kvm_check_mmu(cpu, &error_fatal); + + spapr_irq_cpu_intc_reset(spapr, cpu); } =20 void spapr_cpu_set_entry_state(PowerPCCPU *cpu, target_ulong nip, target_u= long r3) diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c index 234d1073e5..b941608b69 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; } =20 +void spapr_irq_cpu_intc_reset(SpaprMachineState *spapr, PowerPCCPU *cpu) +{ + SpaprInterruptController *intcs[] =3D ALL_INTCS(spapr); + int i; + + for (i =3D 0; i < ARRAY_SIZE(intcs); i++) { + SpaprInterruptController *intc =3D intcs[i]; + if (intc) { + SpaprInterruptControllerClass *sicc =3D SPAPR_INTC_GET_CLASS(i= ntc); + sicc->cpu_intc_reset(intc, cpu); + } + } +} + static void spapr_set_irq(void *opaque, int irq, int level) { SpaprMachineState *spapr =3D SPAPR_MACHINE(opaque); diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h index 1cdbe55bf8..2a780e633f 100644 --- a/include/hw/ppc/pnv.h +++ b/include/hw/ppc/pnv.h @@ -111,6 +111,7 @@ typedef struct PnvChipClass { =20 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 5e150a6679..09232999b0 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 *spap= r); =20 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 1e6a9300eb..602173c122 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); =20 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 fd3319bd32..99381639f5 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 offse= t, unsigned size); =20 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); =20 static inline uint32_t xive_nvt_cam_line(uint8_t nvt_blk, uint32_t nvt_idx) { --=20 2.21.0