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

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Message-ID: <86wm7n6ya2.wl-maz@kernel.org>
Date: Fri, 01 Aug 2025 13:07:17 +0100
From: Marc Zyngier <maz@...nel.org>
To: Jinqian Yang <yangjinqian1@...wei.com>
Cc: <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	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: Re: Regarding the Issue of vNMI Not Supporting Live Migration

On Fri, 01 Aug 2025 09:00:07 +0100,
Jinqian Yang <yangjinqian1@...wei.com> wrote:
> 
> 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?

There patches are *dead*, and will *not* be upstreamed as such. You
can tell from the date and the base commit that they are old and
unmaintained.

Please do not pick random branches from my tree.

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.