linux-kernel - Regarding the Issue of vNMI Not Supporting Live Migration

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Message-ID: <c7bc0979-3721-49ba-89bd-ebcaa5ce70d9@huawei.com>
Date: Fri, 1 Aug 2025 16:00:07 +0800
From: Jinqian Yang <yangjinqian1@...wei.com>
To: <maz@...nel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
CC: Zhou Wang <wangzhou1@...ilicon.com>, jiangkunkun <jiangkunkun@...wei.com>,
	Luchunhua <luchunhua@...wei.com>, liuyonglong <liuyonglong@...wei.com>,
	"xuwei (O)" <xuwei5@...wei.com>, "Zengtao (B)" <prime.zeng@...ilicon.com>
Subject: Regarding the Issue of vNMI Not Supporting Live Migration

Hi，marc

https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/log/?h=arm64/nmi

During the testing of this set of vNMI patches, it was discovered that 
vNMI do not support live
migration. The reason is that GICD_INMIR/GICR_INMIR0 have not been 
migrated, causing
irq->nmi to reset to 0 after migration. Therefore, to resolve this 
issue, we need to complete the
migration of GICD_INMIR/GICR_INMIR0. This set of patches does not seem 
to have been uploaded
to the mainline. I was wondering if these are scheduled for upload to 
the mainline?

Thanks,
Jinqian