linux-kernel - Re: [PATCH v3 0/8] xen/events: bug fixes and some diagnostic aids

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Message-ID: <67b7a01c-9de5-d520-d465-e4e3954302e2@oracle.com>
Date:   Tue, 23 Feb 2021 10:44:58 -0500
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Juergen Gross <jgross@...e.com>, xen-devel@...ts.xenproject.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        linux-block@...r.kernel.org, linux-scsi@...r.kernel.org
Cc:     Stefano Stabellini <sstabellini@...nel.org>,
        stable@...r.kernel.org, Wei Liu <wei.liu@...nel.org>,
        Paul Durrant <paul@....org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Roger Pau Monné <roger.pau@...rix.com>,
        Jens Axboe <axboe@...nel.dk>
Subject: Re: [PATCH v3 0/8] xen/events: bug fixes and some diagnostic aids


On 2/19/21 10:40 AM, Juergen Gross wrote:
> The first four patches are fixes for XSA-332. The avoid WARN splats
> and a performance issue with interdomain events.
>
> Patches 5 and 6 are some additions to event handling in order to add
> some per pv-device statistics to sysfs and the ability to have a per
> backend device spurious event delay control.
>
> Patches 7 and 8 are minor fixes I had lying around.
>
> Juergen Gross (8):
>   xen/events: reset affinity of 2-level event when tearing it down
>   xen/events: don't unmask an event channel when an eoi is pending
>   xen/events: avoid handling the same event on two cpus at the same time
>   xen/netback: fix spurious event detection for common event case
>   xen/events: link interdomain events to associated xenbus device
>   xen/events: add per-xenbus device event statistics and settings
>   xen/evtchn: use smp barriers for user event ring
>   xen/evtchn: use READ/WRITE_ONCE() for accessing ring indices
>

I am going to pick up the last 3 patches since Ross appears to be having some issues with #2 (and 4 and 5 went in via netdev tree)


-boris