linux-kernel - Re: [PATCH v3 0/3] vhost-net regression fixes

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Message-ID: <A8EB32B8-1AF2-45AA-87A9-4068E405B284@nutanix.com>
Date: Mon, 15 Sep 2025 16:39:01 +0000
From: Jon Kohler <jon@...anix.com>
To: "Michael S. Tsirkin" <mst@...hat.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH v3 0/3] vhost-net regression fixes



> On Sep 15, 2025, at 12:03 PM, Michael S. Tsirkin <mst@...hat.com> wrote:
> 
> !-------------------------------------------------------------------|
>  CAUTION: External Email
> 
> |-------------------------------------------------------------------!
> 
> 
> Two regressions were reported in vhost-net.
> This is based on a patchset by Jason, but with
> patch 2 from his series split up and made simpler.
> 
> Lightly tested.
> Jason, Jon could you pls test this as well, and report?

For the iotlb bit (patch 2/3):
Tried this out on a 6.16 host / guest that locked up with iotlb miss loop,
applied this patch and all was well.

Tested-by: Jon Kohler <jon@...anix.com> 

> 
> 
> Jason Wang (2):
>  vhost-net: unbreak busy polling
> 
> Michael S. Tsirkin (1):
>  Revert "vhost/net: Defer TX queue re-enable until after sendmsg"
>  vhost-net: flush batched before enabling notifications
> 
> drivers/vhost/net.c | 44 ++++++++++++++++++++------------------------
> 1 file changed, 20 insertions(+), 24 deletions(-)
> 
> -- 
> MST
>