yeahuh / rpms / qemu-kvm

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From 3899672db472c1ca530badd49d17726a1057f8af Mon Sep 17 00:00:00 2001
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From: Thomas Huth <thuth@redhat.com>
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Date: Fri, 5 Jun 2020 07:41:10 -0400
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Subject: [PATCH 40/42] kvm: introduce kvm_kernel_irqchip_* functions
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Thomas Huth <thuth@redhat.com>
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Message-id: <20200605074111.2185-3-thuth@redhat.com>
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Patchwork-id: 97369
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O-Subject: [RHEL-8.3.0 qemu-kvm PATCH 2/3] kvm: introduce kvm_kernel_irqchip_* functions
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Bugzilla: 1756946
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RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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From: Paolo Bonzini <pbonzini@redhat.com>
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The KVMState struct is opaque, so provide accessors for the fields
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that will be moved from current_machine to the accelerator.  For now
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they just forward to the machine object, but this will change.
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit 4376c40dedb22530738eeb104a603e94ed03f719)
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Conflicts:
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	accel/kvm/kvm-all.c
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	(contextual conflict due to missing other commits in downstream)
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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 accel/kvm/kvm-all.c  | 23 +++++++++++++++++++----
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 hw/ppc/e500.c        |  5 ++---
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 hw/ppc/spapr_irq.c   | 16 ++++------------
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 include/sysemu/kvm.h |  7 +++++--
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 target/arm/kvm.c     |  8 ++++----
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 target/i386/kvm.c    |  4 ++--
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 target/mips/kvm.c    |  2 +-
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 target/ppc/kvm.c     |  2 +-
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 target/s390x/kvm.c   |  2 +-
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 9 files changed, 39 insertions(+), 30 deletions(-)
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diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
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index 5007bdad96..b0250209f5 100644
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--- a/accel/kvm/kvm-all.c
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+++ b/accel/kvm/kvm-all.c
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@@ -1772,7 +1772,7 @@ void kvm_irqchip_set_qemuirq_gsi(KVMState *s, qemu_irq irq, int gsi)
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     g_hash_table_insert(s->gsimap, irq, GINT_TO_POINTER(gsi));
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 }
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-static void kvm_irqchip_create(MachineState *machine, KVMState *s)
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+static void kvm_irqchip_create(KVMState *s)
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 {
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     int ret;
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@@ -1790,9 +1790,9 @@ static void kvm_irqchip_create(MachineState *machine, KVMState *s)
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     /* First probe and see if there's a arch-specific hook to create the
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      * in-kernel irqchip for us */
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-    ret = kvm_arch_irqchip_create(machine, s);
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+    ret = kvm_arch_irqchip_create(s);
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     if (ret == 0) {
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-        if (machine_kernel_irqchip_split(machine)) {
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+        if (kvm_kernel_irqchip_split()) {
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             perror("Split IRQ chip mode not supported.");
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             exit(1);
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         } else {
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@@ -2076,7 +2076,7 @@ static int kvm_init(MachineState *ms)
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     }
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     if (machine_kernel_irqchip_allowed(ms)) {
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-        kvm_irqchip_create(ms, s);
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+        kvm_irqchip_create(s);
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     }
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     if (kvm_eventfds_allowed) {
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@@ -2966,6 +2966,21 @@ static bool kvm_accel_has_memory(MachineState *ms, AddressSpace *as,
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     return false;
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 }
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+bool kvm_kernel_irqchip_allowed(void)
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+{
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+    return machine_kernel_irqchip_allowed(current_machine);
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+}
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+
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+bool kvm_kernel_irqchip_required(void)
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+{
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+    return machine_kernel_irqchip_required(current_machine);
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+}
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+
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+bool kvm_kernel_irqchip_split(void)
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+{
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+    return machine_kernel_irqchip_split(current_machine);
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+}
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+
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 static void kvm_accel_class_init(ObjectClass *oc, void *data)
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 {
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     AccelClass *ac = ACCEL_CLASS(oc);
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diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
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index 91cd4c26f9..12b6a5b2a8 100644
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--- a/hw/ppc/e500.c
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+++ b/hw/ppc/e500.c
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@@ -793,7 +793,6 @@ static DeviceState *ppce500_init_mpic(PPCE500MachineState *pms,
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                                       MemoryRegion *ccsr,
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                                       IrqLines *irqs)
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 {
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-    MachineState *machine = MACHINE(pms);
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     const PPCE500MachineClass *pmc = PPCE500_MACHINE_GET_CLASS(pms);
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     DeviceState *dev = NULL;
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     SysBusDevice *s;
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@@ -801,10 +800,10 @@ static DeviceState *ppce500_init_mpic(PPCE500MachineState *pms,
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     if (kvm_enabled()) {
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         Error *err = NULL;
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-        if (machine_kernel_irqchip_allowed(machine)) {
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+        if (kvm_kernel_irqchip_allowed()) {
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             dev = ppce500_init_mpic_kvm(pmc, irqs, &err;;
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         }
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-        if (machine_kernel_irqchip_required(machine) && !dev) {
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+        if (kvm_kernel_irqchip_required() && !dev) {
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             error_reportf_err(err,
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                               "kernel_irqchip requested but unavailable: ");
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             exit(1);
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diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c
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index 9da423658a..f388d07bf9 100644
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--- a/hw/ppc/spapr_irq.c
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+++ b/hw/ppc/spapr_irq.c
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@@ -75,12 +75,11 @@ int spapr_irq_init_kvm(SpaprInterruptControllerInitKvm fn,
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                        uint32_t nr_servers,
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                        Error **errp)
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 {
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-    MachineState *machine = MACHINE(qdev_get_machine());
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     Error *local_err = NULL;
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-    if (kvm_enabled() && machine_kernel_irqchip_allowed(machine)) {
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+    if (kvm_enabled() && kvm_kernel_irqchip_allowed()) {
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         if (fn(intc, nr_servers, &local_err) < 0) {
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-            if (machine_kernel_irqchip_required(machine)) {
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+            if (kvm_kernel_irqchip_required()) {
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                 error_prepend(&local_err,
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                               "kernel_irqchip requested but unavailable: ");
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                 error_propagate(errp, local_err);
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@@ -185,7 +184,7 @@ static int spapr_irq_check(SpaprMachineState *spapr, Error **errp)
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      */
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     if (kvm_enabled() &&
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         spapr->irq == &spapr_irq_dual &&
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-        machine_kernel_irqchip_required(machine) &&
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+        kvm_kernel_irqchip_required() &&
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         xics_kvm_has_broken_disconnect(spapr)) {
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         error_setg(errp, "KVM is too old to support ic-mode=dual,kernel-irqchip=on");
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         return -1;
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@@ -288,20 +287,13 @@ uint32_t spapr_irq_nr_msis(SpaprMachineState *spapr)
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 void spapr_irq_init(SpaprMachineState *spapr, Error **errp)
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 {
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-    MachineState *machine = MACHINE(spapr);
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     SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr);
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-    if (machine_kernel_irqchip_split(machine)) {
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+    if (kvm_enabled() && kvm_kernel_irqchip_split()) {
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         error_setg(errp, "kernel_irqchip split mode not supported on pseries");
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         return;
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     }
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-    if (!kvm_enabled() && machine_kernel_irqchip_required(machine)) {
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-        error_setg(errp,
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-                   "kernel_irqchip requested but only available with KVM");
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-        return;
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-    }
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-
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     if (spapr_irq_check(spapr, errp) < 0) {
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         return;
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     }
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diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
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index 9fe233b9bf..aaf2a502e8 100644
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--- a/include/sysemu/kvm.h
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+++ b/include/sysemu/kvm.h
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@@ -519,10 +519,13 @@ void kvm_pc_gsi_handler(void *opaque, int n, int level);
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 void kvm_pc_setup_irq_routing(bool pci_enabled);
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 void kvm_init_irq_routing(KVMState *s);
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+bool kvm_kernel_irqchip_allowed(void);
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+bool kvm_kernel_irqchip_required(void);
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+bool kvm_kernel_irqchip_split(void);
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+
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 /**
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  * kvm_arch_irqchip_create:
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  * @KVMState: The KVMState pointer
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- * @MachineState: The MachineState pointer
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  *
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  * Allow architectures to create an in-kernel irq chip themselves.
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  *
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@@ -530,7 +533,7 @@ void kvm_init_irq_routing(KVMState *s);
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  *            0: irq chip was not created
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  *          > 0: irq chip was created
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  */
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-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s);
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+int kvm_arch_irqchip_create(KVMState *s);
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 /**
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  * kvm_set_one_reg - set a register value in KVM via KVM_SET_ONE_REG ioctl
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diff --git a/target/arm/kvm.c b/target/arm/kvm.c
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index 4be9497402..418bcedc3e 100644
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--- a/target/arm/kvm.c
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+++ b/target/arm/kvm.c
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@@ -861,11 +861,11 @@ void kvm_arch_init_irq_routing(KVMState *s)
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 {
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 }
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-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
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+int kvm_arch_irqchip_create(KVMState *s)
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 {
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-     if (machine_kernel_irqchip_split(ms)) {
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-         perror("-machine kernel_irqchip=split is not supported on ARM.");
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-         exit(1);
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+    if (kvm_kernel_irqchip_split()) {
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+        perror("-machine kernel_irqchip=split is not supported on ARM.");
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+        exit(1);
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     }
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     /* If we can create the VGIC using the newer device control API, we
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diff --git a/target/i386/kvm.c b/target/i386/kvm.c
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index fcc8f7d1f3..f5c17e0028 100644
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--- a/target/i386/kvm.c
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+++ b/target/i386/kvm.c
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@@ -4532,10 +4532,10 @@ void kvm_arch_init_irq_routing(KVMState *s)
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     }
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 }
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-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
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+int kvm_arch_irqchip_create(KVMState *s)
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 {
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     int ret;
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-    if (machine_kernel_irqchip_split(ms)) {
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+    if (kvm_kernel_irqchip_split()) {
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         ret = kvm_vm_enable_cap(s, KVM_CAP_SPLIT_IRQCHIP, 0, 24);
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         if (ret) {
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             error_report("Could not enable split irqchip mode: %s",
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diff --git a/target/mips/kvm.c b/target/mips/kvm.c
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index 578bc14625..de3e26ef1f 100644
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--- a/target/mips/kvm.c
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+++ b/target/mips/kvm.c
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@@ -57,7 +57,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
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     return 0;
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 }
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-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
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+int kvm_arch_irqchip_create(KVMState *s)
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 {
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     return 0;
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 }
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diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
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index c77f9848ec..461dc6dae1 100644
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--- a/target/ppc/kvm.c
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+++ b/target/ppc/kvm.c
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@@ -152,7 +152,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
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     return 0;
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 }
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-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
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+int kvm_arch_irqchip_create(KVMState *s)
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 {
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     return 0;
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 }
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diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
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index 84d7cadd09..c589ef9034 100644
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--- a/target/s390x/kvm.c
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+++ b/target/s390x/kvm.c
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@@ -386,7 +386,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
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     return 0;
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 }
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-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
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+int kvm_arch_irqchip_create(KVMState *s)
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 {
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     return 0;
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 }
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-- 
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2.27.0
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