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Re: [PATCH] xen: detect uninitialized xenbus in xenbus_init
- To: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>
- From: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- Date: Thu, 18 Nov 2021 17:24:46 -0500
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- Cc: Jan Beulich <jbeulich@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>, stable@xxxxxxxxxxxxxxx
- Delivery-date: Thu, 18 Nov 2021 22:25:34 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 11/18/21 4:00 PM, Stefano Stabellini wrote:
/*
* Avoid truncation on 32-bit.
* TODO: handle addresses >= 4G
*/
if ( v >= ~0UL ) {
err = -EINVAL;
goto out_error;
}
Since this is only relevant to 32-bit kernels then "#if BITS_PER_LONG == 32".
-boris
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