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qemu-kvm/SOURCES/kvm-introduce-kvm_kernel_irqchip_-functions.patch

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