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Re: [PATCH v3 07/12] target/riscv: Support setting external interrupt by
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From: |
Anup Patel |
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Subject: |
Re: [PATCH v3 07/12] target/riscv: Support setting external interrupt by KVM |
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Date: |
Thu, 23 Dec 2021 11:35:23 +0530 |
On Mon, Dec 20, 2021 at 6:39 PM Yifei Jiang <jiangyifei@huawei.com> wrote:
>
> When KVM is enabled, set the S-mode external interrupt through
> kvm_riscv_set_irq function.
>
> Signed-off-by: Yifei Jiang <jiangyifei@huawei.com>
> Signed-off-by: Mingwang Li <limingwang@huawei.com>
> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Looks good to me.
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Regards,
Anup
> ---
> target/riscv/cpu.c | 6 +++++-
> target/riscv/kvm-stub.c | 5 +++++
> target/riscv/kvm.c | 17 +++++++++++++++++
> target/riscv/kvm_riscv.h | 1 +
> 4 files changed, 28 insertions(+), 1 deletion(-)
>
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index 1c944872a3..3fc3a9c45b 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -603,7 +603,11 @@ static void riscv_cpu_set_irq(void *opaque, int irq, int
> level)
> case IRQ_S_EXT:
> case IRQ_VS_EXT:
> case IRQ_M_EXT:
> - riscv_cpu_update_mip(cpu, 1 << irq, BOOL_TO_MASK(level));
> + if (kvm_enabled()) {
> + kvm_riscv_set_irq(cpu, irq, level);
> + } else {
> + riscv_cpu_update_mip(cpu, 1 << irq, BOOL_TO_MASK(level));
> + }
> break;
> default:
> g_assert_not_reached();
> diff --git a/target/riscv/kvm-stub.c b/target/riscv/kvm-stub.c
> index 39b96fe3f4..4e8fc31a21 100644
> --- a/target/riscv/kvm-stub.c
> +++ b/target/riscv/kvm-stub.c
> @@ -23,3 +23,8 @@ void kvm_riscv_reset_vcpu(RISCVCPU *cpu)
> {
> abort();
> }
> +
> +void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level)
> +{
> + abort();
> +}
> diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c
> index db6d8a5b6e..0027f11f45 100644
> --- a/target/riscv/kvm.c
> +++ b/target/riscv/kvm.c
> @@ -383,6 +383,23 @@ void kvm_riscv_reset_vcpu(RISCVCPU *cpu)
> env->satp = 0;
> }
>
> +void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level)
> +{
> + int ret;
> + unsigned virq = level ? KVM_INTERRUPT_SET : KVM_INTERRUPT_UNSET;
> +
> + if (irq != IRQ_S_EXT) {
> + perror("kvm riscv set irq != IRQ_S_EXT\n");
> + abort();
> + }
> +
> + ret = kvm_vcpu_ioctl(CPU(cpu), KVM_INTERRUPT, &virq);
> + if (ret < 0) {
> + perror("Set irq failed");
> + abort();
> + }
> +}
> +
> bool kvm_arch_cpu_check_are_resettable(void)
> {
> return true;
> diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h
> index f38c82bf59..ed281bdce0 100644
> --- a/target/riscv/kvm_riscv.h
> +++ b/target/riscv/kvm_riscv.h
> @@ -20,5 +20,6 @@
> #define QEMU_KVM_RISCV_H
>
> void kvm_riscv_reset_vcpu(RISCVCPU *cpu);
> +void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level);
>
> #endif
> --
> 2.19.1
>
- [PATCH v3 00/12] Add riscv kvm accel support, Yifei Jiang, 2021/12/20
- [PATCH v3 10/12] target/riscv: Add kvm_riscv_get/put_regs_timer, Yifei Jiang, 2021/12/20
- [PATCH v3 08/12] target/riscv: Handle KVM_EXIT_RISCV_SBI exit, Yifei Jiang, 2021/12/20
- [PATCH v3 02/12] target/riscv: Add target/riscv/kvm.c to place the public kvm interface, Yifei Jiang, 2021/12/20
- [PATCH v3 03/12] target/riscv: Implement function kvm_arch_init_vcpu, Yifei Jiang, 2021/12/20
- [PATCH v3 07/12] target/riscv: Support setting external interrupt by KVM, Yifei Jiang, 2021/12/20
- Re: [PATCH v3 07/12] target/riscv: Support setting external interrupt by KVM,
Anup Patel <=
- [PATCH v3 05/12] target/riscv: Implement kvm_arch_put_registers, Yifei Jiang, 2021/12/20
- [PATCH v3 09/12] target/riscv: Add host cpu type, Yifei Jiang, 2021/12/20
- [PATCH v3 12/12] target/riscv: Support virtual time context synchronization, Yifei Jiang, 2021/12/20
- [PATCH v3 11/12] target/riscv: Implement virtual time adjusting with vm state changing, Yifei Jiang, 2021/12/20
- [PATCH v3 01/12] update-linux-headers: Add asm-riscv/kvm.h, Yifei Jiang, 2021/12/20
- [PATCH v3 04/12] target/riscv: Implement kvm_arch_get_registers, Yifei Jiang, 2021/12/20
- [PATCH v3 06/12] target/riscv: Support start kernel directly by KVM, Yifei Jiang, 2021/12/20