From: gaosong <gaosong@loongson.cn>
To: Huacai Chen <chenhuacai@kernel.org>
Cc: maobibo@loongson.cn, kvm@vger.kernel.org,
loongarch@lists.linux.dev, kernel@xen0n.name,
linux-kernel@vger.kernel.org, lixianglai@loongson.cn
Subject: Re: [PATCH v9 0/2] LoongArch: KVM: Add DMSINTC support irqchip in kernel
Date: Thu, 9 Apr 2026 09:32:58 +0800 [thread overview]
Message-ID: <0f0f10e6-11bf-9052-b541-4061d46fa046@loongson.cn> (raw)
In-Reply-To: <CAAhV-H7K8ayLGFMhPwp8uqr3JHdpL1dWOvo2zuVj_3fB2CWPeA@mail.gmail.com>
Hi, Huacai.
在 2026/4/7 下午8:34, Huacai Chen 写道:
> Hi, Song,
>
> On Thu, Apr 2, 2026 at 9:08 PM Song Gao <gaosong@loongson.cn> wrote:
>> Hi,
>>
>> This series implements the DMSINTC in-kernel irqchip device,
>> enables irqfd to deliver MSI to DMSINTC, and supports injecting MSI interrupts
>> to the target vCPU.
>> applied this series. use netperf test.
>> VM with one CPU and start netserver, host run netperf.
>> disable dmsintc
>> taskset 0x2f netperf -H 192.168.122.204 -t UDP_RR -l 36000
>> Local /Remote
>> Socket Size Request Resp. Elapsed Trans.
>> Send Recv Size Size Time Rate
>> bytes Bytes bytes bytes secs. per sec
>>
>> 212992 212992 1 1 36000.00 27107.36
>>
>> enable dmsintc
>> Local /Remote
>> Socket Size Request Resp. Elapsed Trans.
>> Send Recv Size Size Time Rate
>> bytes Bytes bytes bytes secs. per sec
>>
>> 212992 212992 1 1 36000.00 28831.14 (+6.3%)
>>
>> v9:
>> *Correct the incorrect parameter type and remove the function prefix;
>> *Fix a boundary value check.
> It seems your V9 is changed from V7 rather than V8, why?
>
> Huacai
I'm sorry, it was my mistake—V7 and V8 look so similar.
I'll correct is as soon as possible.
Thanks.
Song Gao
>> v8:
>> *Move dmsintc_inject_irq(),dmsintc_deliver_msi_to_vcpu()and
>> dmsintc_set_msi_irq to dmsintc.c.
>> *Rebase.
>>
>> v7:
>> *Rebase;
>> *Fix a typo error;
>> *Drop an extra space;
>> *Move some code from patch2 to patch1.
>> *Rename loongarch_dmsintc_inject_irq() to dmsintc_inject_irq() and move
>> it to interrupt.c;
>> *Rename kvm_loongarch_deliver_msi_to_vcpu() to
>> dmsintc_deliver_msi_to_vcpu() and move it to irqfd.c;
>> *Drop loongarch_set_msi() and dispatch the dmsintc/eiointc
>> paths in pch_msi_set_irq().
>>
>> v6:
>> Fix kvm_device leak in kvm_dmsintc_destroy().
>>
>> v5:
>> Combine patch2 and patch3
>> Add check msgint feature when register DMSINT device.
>>
>> V4: Rebase and R-b;
>> replace DINTC to DMSINTC.
>>
>> V3: Fix kvm_arch_set_irq_inatomic() missing dmsintc set msi.(patch3)
>>
>> V2:
>> https://patchew.org/linux/20251128091125.2720148-1-gaosong@loongson.cn/
>>
>> Thanks.
>> Song Gao
>>
>>
>> Song Gao (2):
>> LoongArch: KVM: Add DMSINTC device support
>> LoongArch: KVM: Add dmsintc inject msi to the dest vcpu
>>
>> arch/loongarch/include/asm/kvm_dmsintc.h | 23 +++++
>> arch/loongarch/include/asm/kvm_host.h | 3 +
>> arch/loongarch/include/asm/kvm_pch_pic.h | 4 +-
>> arch/loongarch/include/uapi/asm/kvm.h | 4 +
>> arch/loongarch/kvm/Makefile | 1 +
>> arch/loongarch/kvm/intc/dmsintc.c | 117 +++++++++++++++++++++++
>> arch/loongarch/kvm/intc/pch_pic.c | 15 ++-
>> arch/loongarch/kvm/interrupt.c | 37 +++++++
>> arch/loongarch/kvm/irqfd.c | 48 ++++++++--
>> arch/loongarch/kvm/main.c | 6 ++
>> include/uapi/linux/kvm.h | 2 +
>> 11 files changed, 251 insertions(+), 9 deletions(-)
>> create mode 100644 arch/loongarch/include/asm/kvm_dmsintc.h
>> create mode 100644 arch/loongarch/kvm/intc/dmsintc.c
>>
>> --
>> 2.39.3
>>
prev parent reply other threads:[~2026-04-09 1:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-02 12:42 [PATCH v9 0/2] LoongArch: KVM: Add DMSINTC support irqchip in kernel Song Gao
2026-04-02 12:42 ` [PATCH v9 1/2] LoongArch: KVM: Add DMSINTC device support Song Gao
2026-04-02 12:42 ` [PATCH v9 2/2] LoongArch: KVM: Add dmsintc inject msi to the dest vcpu Song Gao
2026-04-07 12:34 ` [PATCH v9 0/2] LoongArch: KVM: Add DMSINTC support irqchip in kernel Huacai Chen
2026-04-09 1:32 ` gaosong [this message]
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