From: Greg Kurz <groug@kaod.org>
To: David Gibson <david@gibson.dropbear.id.au>
Cc: "Jason Wang" <jasowang@redhat.com>,
"Riku Voipio" <riku.voipio@iki.fi>,
qemu-devel@nongnu.org, "Laurent Vivier" <laurent@vivier.eu>,
qemu-ppc@nongnu.org, clg@kaod.org,
"Marc-André Lureau" <marcandre.lureau@redhat.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
philmd@redhat.com
Subject: Re: [PATCH v2 28/33] spapr: Remove SpaprIrq::init_kvm hook
Date: Fri, 27 Sep 2019 17:04:13 +0200 [thread overview]
Message-ID: <20190927170413.61d85376@bahia.lan> (raw)
In-Reply-To: <20190927055028.11493-29-david@gibson.dropbear.id.au>
On Fri, 27 Sep 2019 15:50:23 +1000
David Gibson <david@gibson.dropbear.id.au> wrote:
> This hook is a bit odd. The only caller is spapr_irq_init_kvm(), but
> it explicitly takes an SpaprIrq *, so it's never really called through the
> current SpaprIrq. Essentially this is just a way of passing through a
> function pointer so that spapr_irq_init_kvm() can handle some
> configuration and error handling logic without duplicating it between the
> xics and xive reset paths.
>
> So, make it just take that function pointer. Because of earlier reworks
> to the KVM connect/disconnect code in the xics and xive backends we can
> also eliminate some wrapper functions and streamline error handling a bit.
>
> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
> ---
Reviewed-by: Greg Kurz <groug@kaod.org>
> hw/ppc/spapr_irq.c | 74 +++++++++++++-------------------------
> include/hw/ppc/spapr_irq.h | 1 -
> 2 files changed, 25 insertions(+), 50 deletions(-)
>
> diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c
> index 561bdbc4de..c6abebc4ef 100644
> --- a/hw/ppc/spapr_irq.c
> +++ b/hw/ppc/spapr_irq.c
> @@ -65,33 +65,35 @@ void spapr_irq_msi_free(SpaprMachineState *spapr, int irq, uint32_t num)
> bitmap_clear(spapr->irq_map, irq - SPAPR_IRQ_MSI, num);
> }
>
> -static void spapr_irq_init_kvm(SpaprMachineState *spapr,
> - SpaprIrq *irq, Error **errp)
> +static int spapr_irq_init_kvm(int (*fn)(SpaprInterruptController *, Error **),
> + SpaprInterruptController *intc,
> + Error **errp)
> {
> - MachineState *machine = MACHINE(spapr);
> + MachineState *machine = MACHINE(qdev_get_machine());
> Error *local_err = NULL;
>
> if (kvm_enabled() && machine_kernel_irqchip_allowed(machine)) {
> - irq->init_kvm(spapr, &local_err);
> - if (local_err && machine_kernel_irqchip_required(machine)) {
> - error_prepend(&local_err,
> - "kernel_irqchip requested but unavailable: ");
> - error_propagate(errp, local_err);
> - return;
> - }
> + if (fn(intc, &local_err) < 0) {
> + if (machine_kernel_irqchip_required(machine)) {
> + error_prepend(&local_err,
> + "kernel_irqchip requested but unavailable: ");
> + error_propagate(errp, local_err);
> + return -1;
> + }
>
> - if (!local_err) {
> - return;
> + /*
> + * We failed to initialize the KVM device, fallback to
> + * emulated mode
> + */
> + error_prepend(&local_err,
> + "kernel_irqchip allowed but unavailable: ");
> + error_append_hint(&local_err,
> + "Falling back to kernel-irqchip=off\n");
> + warn_report_err(local_err);
> }
> -
> - /*
> - * We failed to initialize the KVM device, fallback to
> - * emulated mode
> - */
> - error_prepend(&local_err, "kernel_irqchip allowed but unavailable: ");
> - error_append_hint(&local_err, "Falling back to kernel-irqchip=off\n");
> - warn_report_err(local_err);
> }
> +
> + return 0;
> }
>
> /*
> @@ -112,20 +114,7 @@ static int spapr_irq_post_load_xics(SpaprMachineState *spapr, int version_id)
>
> static void spapr_irq_reset_xics(SpaprMachineState *spapr, Error **errp)
> {
> - Error *local_err = NULL;
> -
> - spapr_irq_init_kvm(spapr, &spapr_irq_xics, &local_err);
> - if (local_err) {
> - error_propagate(errp, local_err);
> - return;
> - }
> -}
> -
> -static void spapr_irq_init_kvm_xics(SpaprMachineState *spapr, Error **errp)
> -{
> - if (kvm_enabled()) {
> - xics_kvm_connect(SPAPR_INTC(spapr->ics), errp);
> - }
> + spapr_irq_init_kvm(xics_kvm_connect, SPAPR_INTC(spapr->ics), errp);
> }
>
> SpaprIrq spapr_irq_xics = {
> @@ -136,7 +125,6 @@ SpaprIrq spapr_irq_xics = {
>
> .post_load = spapr_irq_post_load_xics,
> .reset = spapr_irq_reset_xics,
> - .init_kvm = spapr_irq_init_kvm_xics,
> };
>
> /*
> @@ -151,7 +139,6 @@ static int spapr_irq_post_load_xive(SpaprMachineState *spapr, int version_id)
> static void spapr_irq_reset_xive(SpaprMachineState *spapr, Error **errp)
> {
> CPUState *cs;
> - Error *local_err = NULL;
>
> CPU_FOREACH(cs) {
> PowerPCCPU *cpu = POWERPC_CPU(cs);
> @@ -160,9 +147,8 @@ static void spapr_irq_reset_xive(SpaprMachineState *spapr, Error **errp)
> spapr_xive_set_tctx_os_cam(spapr_cpu_state(cpu)->tctx);
> }
>
> - spapr_irq_init_kvm(spapr, &spapr_irq_xive, &local_err);
> - if (local_err) {
> - error_propagate(errp, local_err);
> + if (spapr_irq_init_kvm(kvmppc_xive_connect,
> + SPAPR_INTC(spapr->xive), errp) < 0) {
> return;
> }
>
> @@ -170,13 +156,6 @@ static void spapr_irq_reset_xive(SpaprMachineState *spapr, Error **errp)
> spapr_xive_mmio_set_enabled(spapr->xive, true);
> }
>
> -static void spapr_irq_init_kvm_xive(SpaprMachineState *spapr, Error **errp)
> -{
> - if (kvm_enabled()) {
> - kvmppc_xive_connect(SPAPR_INTC(spapr->xive), errp);
> - }
> -}
> -
> SpaprIrq spapr_irq_xive = {
> .nr_xirqs = SPAPR_NR_XIRQS,
> .nr_msis = SPAPR_NR_MSIS,
> @@ -185,7 +164,6 @@ SpaprIrq spapr_irq_xive = {
>
> .post_load = spapr_irq_post_load_xive,
> .reset = spapr_irq_reset_xive,
> - .init_kvm = spapr_irq_init_kvm_xive,
> };
>
> /*
> @@ -251,7 +229,6 @@ SpaprIrq spapr_irq_dual = {
>
> .post_load = spapr_irq_post_load_dual,
> .reset = spapr_irq_reset_dual,
> - .init_kvm = NULL, /* should not be used */
> };
>
>
> @@ -682,7 +659,6 @@ SpaprIrq spapr_irq_xics_legacy = {
>
> .post_load = spapr_irq_post_load_xics,
> .reset = spapr_irq_reset_xics,
> - .init_kvm = spapr_irq_init_kvm_xics,
> };
>
> static void spapr_irq_register_types(void)
> diff --git a/include/hw/ppc/spapr_irq.h b/include/hw/ppc/spapr_irq.h
> index c82724fc2b..c947f40571 100644
> --- a/include/hw/ppc/spapr_irq.h
> +++ b/include/hw/ppc/spapr_irq.h
> @@ -85,7 +85,6 @@ typedef struct SpaprIrq {
>
> int (*post_load)(SpaprMachineState *spapr, int version_id);
> void (*reset)(SpaprMachineState *spapr, Error **errp);
> - void (*init_kvm)(SpaprMachineState *spapr, Error **errp);
> } SpaprIrq;
>
> extern SpaprIrq spapr_irq_xics;
next prev parent reply other threads:[~2019-09-27 16:11 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-27 5:49 [PATCH v2 00/33] spapr: IRQ subsystem cleanup David Gibson
2019-09-27 5:49 ` [PATCH v2 01/33] xics: Minor fixes for XICSFabric interface David Gibson
2019-09-27 7:17 ` Greg Kurz
2019-09-27 5:49 ` [PATCH v2 02/33] xics: Eliminate 'reject', 'resend' and 'eoi' class hooks David Gibson
2019-09-27 5:49 ` [PATCH v2 03/33] xics: Rename misleading ics_simple_*() functions David Gibson
2019-09-27 5:49 ` [PATCH v2 04/33] xics: Eliminate reset hook David Gibson
2019-09-27 7:19 ` Greg Kurz
2019-09-27 5:50 ` [PATCH v2 05/33] xics: Merge TYPE_ICS_BASE and TYPE_ICS_SIMPLE classes David Gibson
2019-09-27 5:50 ` [PATCH v2 06/33] xics: Create sPAPR specific ICS subtype David Gibson
2019-09-27 7:22 ` Greg Kurz
2019-09-27 5:50 ` [PATCH v2 07/33] spapr: Fold spapr_phb_lsi_qirq() into its single caller David Gibson
2019-09-27 5:50 ` [PATCH v2 08/33] spapr: Replace spapr_vio_qirq() helper with spapr_vio_irq_pulse() helper David Gibson
2019-09-27 5:50 ` [PATCH v2 09/33] spapr: Clarify and fix handling of nr_irqs David Gibson
2019-09-27 7:53 ` Greg Kurz
2019-09-27 7:58 ` David Gibson
2019-09-27 5:50 ` [PATCH v2 10/33] spapr: Eliminate nr_irqs parameter to SpaprIrq::init David Gibson
2019-09-27 7:57 ` Greg Kurz
2019-09-27 5:50 ` [PATCH v2 11/33] spapr: Fix indexing of XICS irqs David Gibson
2019-09-27 5:50 ` [PATCH v2 12/33] spapr: Simplify spapr_qirq() handling David Gibson
2019-09-27 5:50 ` [PATCH v2 13/33] spapr: Eliminate SpaprIrq:get_nodename method David Gibson
2019-09-27 5:50 ` [PATCH v2 14/33] spapr: Remove unhelpful tracepoints from spapr_irq_free_xics() David Gibson
2019-09-27 5:50 ` [PATCH v2 15/33] spapr: Handle freeing of multiple irqs in frontend only David Gibson
2019-09-27 5:50 ` [PATCH v2 16/33] spapr, xics, xive: Better use of assert()s on irq claim/free paths David Gibson
2019-09-27 5:50 ` [PATCH v2 17/33] xive: Improve irq claim/free path David Gibson
2019-09-27 8:40 ` Greg Kurz
2019-09-30 1:39 ` David Gibson
2019-09-27 5:50 ` [PATCH v2 18/33] spapr: Use less cryptic representation of which irq backends are supported David Gibson
2019-09-27 5:50 ` [PATCH v2 19/33] spapr: Eliminate SpaprIrq::init hook David Gibson
2019-09-27 5:50 ` [PATCH v2 20/33] spapr, xics, xive: Introduce SpaprInterruptController QOM interface David Gibson
2019-09-27 9:52 ` Greg Kurz
2019-09-30 5:24 ` Cédric Le Goater
2019-09-27 5:50 ` [PATCH v2 21/33] spapr, xics, xive: Move cpu_intc_create from SpaprIrq to SpaprInterruptController David Gibson
2019-09-27 10:16 ` Greg Kurz
2019-09-30 1:49 ` David Gibson
2019-09-30 5:28 ` Cédric Le Goater
2019-09-30 6:14 ` David Gibson
2019-09-30 10:13 ` Cédric Le Goater
2019-10-01 2:31 ` David Gibson
2019-10-01 5:43 ` Cédric Le Goater
2019-10-01 6:47 ` David Gibson
2019-10-01 7:41 ` Cédric Le Goater
2019-10-01 8:11 ` David Gibson
2019-10-01 11:43 ` Cédric Le Goater
2019-10-02 1:11 ` David Gibson
2019-09-30 2:37 ` David Gibson
2019-09-30 5:30 ` Cédric Le Goater
2019-09-27 5:50 ` [PATCH v2 22/33] spapr, xics, xive: Move irq claim and free " David Gibson
2019-09-27 12:16 ` Greg Kurz
2019-09-30 2:39 ` David Gibson
2019-09-30 5:36 ` Cédric Le Goater
2019-09-30 5:33 ` Cédric Le Goater
2019-09-27 5:50 ` [PATCH v2 23/33] spapr: Formalize notion of active interrupt controller David Gibson
2019-09-27 14:16 ` Greg Kurz
2019-09-30 5:39 ` Cédric Le Goater
2019-09-27 5:50 ` [PATCH v2 24/33] spapr, xics, xive: Move set_irq from SpaprIrq to SpaprInterruptController David Gibson
2019-09-27 14:27 ` Greg Kurz
2019-09-30 2:41 ` David Gibson
2019-09-30 7:22 ` Greg Kurz
2019-09-30 8:28 ` David Gibson
2019-09-30 5:48 ` Cédric Le Goater
2019-09-27 5:50 ` [PATCH v2 25/33] spapr, xics, xive: Move print_info " David Gibson
2019-09-27 14:31 ` Greg Kurz
2019-09-27 5:50 ` [PATCH v2 26/33] spapr, xics, xive: Move dt_populate " David Gibson
2019-09-27 14:38 ` Greg Kurz
2019-09-30 5:51 ` Cédric Le Goater
2019-09-27 5:50 ` [PATCH v2 27/33] spapr, xics, xive: Match signatures for XICS and XIVE KVM connect routines David Gibson
2019-09-27 14:49 ` Greg Kurz
2019-09-30 5:52 ` Cédric Le Goater
2019-09-27 5:50 ` [PATCH v2 28/33] spapr: Remove SpaprIrq::init_kvm hook David Gibson
2019-09-27 15:04 ` Greg Kurz [this message]
2019-09-30 5:55 ` Cédric Le Goater
2019-09-27 5:50 ` [PATCH v2 29/33] spapr, xics, xive: Move SpaprIrq::reset hook logic into activate/deactivate David Gibson
2019-09-30 6:11 ` Cédric Le Goater
2019-09-30 8:25 ` David Gibson
2019-09-30 19:29 ` Cédric Le Goater
2019-10-01 3:07 ` David Gibson
2019-09-27 5:50 ` [PATCH v2 30/33] spapr, xics, xive: Move SpaprIrq::post_load hook to backends David Gibson
2019-09-27 5:50 ` [PATCH v2 31/33] spapr: Remove SpaprIrq::nr_msis David Gibson
2019-09-27 15:17 ` Greg Kurz
2019-09-27 5:50 ` [PATCH v2 32/33] spapr: Move SpaprIrq::nr_xirqs to SpaprMachineClass David Gibson
2019-09-27 15:22 ` Greg Kurz
2019-09-30 2:44 ` David Gibson
2019-09-27 5:50 ` [PATCH v2 33/33] spapr: Remove last pieces of SpaprIrq David Gibson
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