netdev - Re: [PATCHv3 2/2] kvm: retry nx_huge_page_recovery

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Message-ID: <aBOPWGPTCgnUgtw-@CMGLRV3>
Date: Thu, 1 May 2025 10:12:24 -0500
From: Frederick Lawler <fred@...udflare.com>
To: Keith Busch <kbusch@...nel.org>
Cc: Simon Horman <horms@...nel.org>, Keith Busch <kbusch@...a.com>,
	seanjc@...gle.com, pbonzini@...hat.com, kvm@...r.kernel.org,
	leiyang@...hat.com, virtualization@...ts.linux.dev, x86@...nel.org,
	netdev@...r.kernel.org, kernel-team@...udfalre.com
Subject: Re: [PATCHv3 2/2] kvm: retry nx_huge_page_recovery_thread creation

Hi Keith,

On Tue, Mar 04, 2025 at 09:07:23AM -0700, Keith Busch wrote:
> On Tue, Mar 04, 2025 at 03:59:22PM +0000, Simon Horman wrote:
> > A minor nit from my side:
> > 
> > As you are changing this line, and it seems like there will be another
> > revision of this series anyway, please consider updating the indentation to
> > use tabs.
> 
> The patch is already applied to upstream and stable, and I think Paolo
> must have taken care of the formatting because it looks good in the
> commit now:
> 
>   https://web.git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=916b7f42b3b3b539a71c204a9b49fdc4ca92cd82a

I backported this patch cleanly on top of 6.12.24 and ran it on some of
our production nodes. I compared 6.12.24 to the patched 6.12.24 over the
last three days, and we saw a drop in ENOMEM reports from firecracker.
It also appears our VM's to be consistently spinning up again.

When you said stable here, I checked the stable queue and lists, but I
didn't see this patch in 6.12. (only in the 6.14/15 stable) Can we get
this backported to 6.12 as well?

Fred