From: "Jürgen Groß" <jgross@suse.com>
To: Andy Lutomirski <luto@kernel.org>, x86@kernel.org
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
LKML <linux-kernel@vger.kernel.org>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Stefano Stabellini <sstabellini@kernel.org>,
stable@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v3] x86/ioperm: Fix io bitmap invalidation on Xen PV
Date: Sat, 18 Jul 2020 06:40:33 +0200 [thread overview]
Message-ID: <b419bbc1-5bff-2298-a2be-68c892b0999f@suse.com> (raw)
In-Reply-To: <d53075590e1f91c19f8af705059d3ff99424c020.1595030016.git.luto@kernel.org>
On 18.07.20 01:53, Andy Lutomirski wrote:
> tss_invalidate_io_bitmap() wasn't wired up properly through the pvop
> machinery, so the TSS and Xen's io bitmap would get out of sync
> whenever disabling a valid io bitmap.
>
> Add a new pvop for tss_invalidate_io_bitmap() to fix it.
>
> This is XSA-329.
>
> Cc: Juergen Gross <jgross@suse.com>
> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
> Cc: Stefano Stabellini <sstabellini@kernel.org>
> Cc: stable@vger.kernel.org
> Fixes: 22fe5b0439dd ("x86/ioperm: Move TSS bitmap update to exit to user work")
> Reviewed-by: Juergen Gross <jgross@suse.com>
> Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
> Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Juergen
next prev parent reply other threads:[~2020-07-18 4:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-17 23:53 [PATCH v3] x86/ioperm: Fix io bitmap invalidation on Xen PV Andy Lutomirski
2020-07-18 4:40 ` Jürgen Groß [this message]
2020-07-18 10:32 ` [tip: x86/urgent] " tip-bot2 for Andy Lutomirski
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