linux-kernel - Re: [PATCH v3 0/4] LongArch: KVM: Add AVEC support irqchip in kernel

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Message-ID: <CAAhV-H5BZuZGu0jOBXr-Ed1uJYhS_d2NMhV22-7VGu_7J2D1fw@mail.gmail.com>
Date: Sat, 13 Dec 2025 20:39:15 +0800
From: Huacai Chen <chenhuacai@...nel.org>
To: Song Gao <gaosong@...ngson.cn>
Cc: maobibo@...ngson.cn, kvm@...r.kernel.org, loongarch@...ts.linux.dev, 
	kernel@...0n.name, linux-kernel@...r.kernel.org, lixianglai@...ngson.cn
Subject: Re: [PATCH v3 0/4] LongArch: KVM: Add AVEC support irqchip in kernel

Hi, Song,

On Sat, Dec 6, 2025 at 3:11 PM Song Gao <gaosong@...ngson.cn> wrote:
>
> Hi,
>
> This series adds AVEC-related macros, implements the DINTC in-kernel irqchip device,
> enables irqfd to deliver MSI to DINTC, and supports injecting MSI interrupts
> to the target vCPU.
>
>
> V3: Fix kvm_arch_set_irq_inatomic() missing dintc set msi.(patch3)
>
> V2:
> https://patchew.org/linux/20251128091125.2720148-1-gaosong@loongson.cn/
>
> Thanks.
> Song Gao
>
> Song Gao (4):
>   LongArch: KVM: Add some maccros for AVEC
The first patch has been merged.

For others, I prefer the AVEC/AVECINTC naming rather than DINTC, since
the driver name and your cover letter both call it AVEC.
But If you don't like AVEC or want to keep consistency with the user
manual, please use DMSINTC because the IOCSR feature bit is called
DMSI.

Huacai

>   LongArch: KVM: Add DINTC device support
>   LongArch: KVM: Add irqfd set dintc msi
>   LongArch: KVM: Add dintc inject msi to the dest vcpu
>
>  arch/loongarch/include/asm/irq.h       |   8 ++
>  arch/loongarch/include/asm/kvm_dintc.h |  22 +++++
>  arch/loongarch/include/asm/kvm_host.h  |   8 ++
>  arch/loongarch/include/uapi/asm/kvm.h  |   4 +
>  arch/loongarch/kvm/Makefile            |   1 +
>  arch/loongarch/kvm/intc/dintc.c        | 116 +++++++++++++++++++++++++
>  arch/loongarch/kvm/interrupt.c         |   1 +
>  arch/loongarch/kvm/irqfd.c             |  45 ++++++++--
>  arch/loongarch/kvm/main.c              |   5 ++
>  arch/loongarch/kvm/vcpu.c              |  55 ++++++++++++
>  drivers/irqchip/irq-loongarch-avec.c   |   5 +-
>  include/uapi/linux/kvm.h               |   2 +
>  12 files changed, 263 insertions(+), 9 deletions(-)
>  create mode 100644 arch/loongarch/include/asm/kvm_dintc.h
>  create mode 100644 arch/loongarch/kvm/intc/dintc.c
>
> --
> 2.39.3
>
>