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target/loongarch: Implement set vcpu intr for kvm

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Implement loongarch kvm set vcpu interrupt interface,
when a irq is set in vcpu, we use the KVM_INTERRUPT
ioctl to set intr into kvm.

Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: xianglai li <lixianglai@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20240105075804.1228596-9-zhaotianrui@loongson.cn>
[PMD: Split from bigger patch, part 2]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240110094152.52138-2-philmd@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
This commit is contained in:
Tianrui Zhao 2024-01-10 10:41:52 +01:00 committed by Song Gao
parent 2d45085a72
commit 8dcbad5128
4 changed files with 40 additions and 1 deletions
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9
target/loongarch/cpu.c
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@ -12,6 +12,8 @@
#include "qemu/module.h"
#include "sysemu/qtest.h"
#include "sysemu/tcg.h"
#include "sysemu/kvm.h"
#include "kvm/kvm_loongarch.h"
#include "exec/exec-all.h"
#include "cpu.h"
#include "internals.h"
@ -21,6 +23,9 @@
#include "sysemu/reset.h"
#endif
#include "vec.h"
#ifdef CONFIG_KVM
#include <linux/kvm.h>
#endif
#ifdef CONFIG_TCG
#include "exec/cpu_ldst.h"
#include "tcg/tcg.h"
@ -113,7 +118,9 @@ void loongarch_cpu_set_irq(void *opaque, int irq, int level)
return;
}
if (tcg_enabled()) {
if (kvm_enabled()) {
kvm_loongarch_set_interrupt(cpu, irq, level);
} else if (tcg_enabled()) {
env->CSR_ESTAT = deposit64(env->CSR_ESTAT, irq, 1, level != 0);
if (FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS)) {
cpu_interrupt(cs, CPU_INTERRUPT_HARD);

15
target/loongarch/kvm/kvm.c
View File

@ -748,6 +748,21 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
return ret;
}
int kvm_loongarch_set_interrupt(LoongArchCPU *cpu, int irq, int level)
{
struct kvm_interrupt intr;
CPUState *cs = CPU(cpu);
if (level) {
intr.irq = irq;
} else {
intr.irq = -irq;
}
trace_kvm_set_intr(irq, level);
return kvm_vcpu_ioctl(cs, KVM_INTERRUPT, &intr);
}
void kvm_arch_accel_class_init(ObjectClass *oc)
{
}

16
target/loongarch/kvm/kvm_loongarch.h Normal file
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@ -0,0 +1,16 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* QEMU LoongArch kvm interface
*
* Copyright (c) 2023 Loongson Technology Corporation Limited
*/
#include "cpu.h"
#ifndef QEMU_KVM_LOONGARCH_H
#define QEMU_KVM_LOONGARCH_H
int kvm_loongarch_set_interrupt(LoongArchCPU *cpu, int irq, int level);
void kvm_arch_reset_vcpu(CPULoongArchState *env);
#endif

1
target/loongarch/trace-events
View File

@ -12,3 +12,4 @@ kvm_failed_put_counter(const char *msg) "Failed to put counter into KVM: %s"
kvm_failed_get_cpucfg(const char *msg) "Failed to get cpucfg from KVM: %s"
kvm_failed_put_cpucfg(const char *msg) "Failed to put cpucfg into KVM: %s"
kvm_arch_handle_exit(int num) "kvm arch handle exit, the reason number: %d"
kvm_set_intr(int irq, int level) "kvm set interrupt, irq num: %d, level: %d"