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Date:   Tue, 11 Sep 2018 22:20:09 +0200 (CEST)
From:   Thomas Gleixner <tglx@linutronix.de>
To:     Boris Ostrovsky <boris.ostrovsky@oracle.com>
cc:     mingo@redhat.com, hpa@zytor.com, x86@kernel.org,
        linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org,
        jgross@suse.com, andy@strugglers.net
Subject: Re: [PATCH] x86/EISA: Don't probe EISA bus for Xen PV guests
In-Reply-To: <20180911195538.23289-1-boris.ostrovsky@oracle.com>
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References: <20180911195538.23289-1-boris.ostrovsky@oracle.com>
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On Tue, 11 Sep 2018, Boris Ostrovsky wrote:

> For unprivileged Xen PV guests this is normal memory and ioremap will
> not be able to properly map it.
> 
> While at it, since ioremap may return NULL, add a test for pointer's
> validity.

I assume this goes back to very dead kernels, so that should go with a Cc
stable, right?

Thanks,

	tglx