linux-kernel - Re: [PATCH v6 0/2] LongArch: KVM: Add DMSINTC support irqchip in kernel

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Message-ID: <aYVhSp_eGBkpXdp-@pie>
Date: Fri, 6 Feb 2026 03:34:34 +0000
From: Yao Zi <me@...ao.cc>
To: Song Gao <gaosong@...ngson.cn>, maobibo@...ngson.cn,
	chenhuacai@...nel.org
Cc: kvm@...r.kernel.org, loongarch@...ts.linux.dev, kernel@...0n.name,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 0/2] LongArch: KVM: Add DMSINTC support irqchip in
 kernel

On Fri, Feb 06, 2026 at 09:20:26AM +0800, Song Gao 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%)
> 
> 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):
>   LongArch: KVM: Add DMSINTC device support
>   LongArch: KVM: Add dmsintc inject msi to the dest vcpu

There's a typo in the titles, it should be LoongArch instead of
"LongArch".

Best regards,
Yao Zi