linux-kernel - Re: [PATCH] xen: Make VPMU init message look less scary

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 1 Aug 2016 10:11:14 -0400
From:	Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:	Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org,
	xen-devel@...ts.xenproject.org
Cc:	david.vrabel@...rix.com
Subject: Re: [PATCH] xen: Make VPMU init message look less scary

On 08/01/2016 07:41 AM, Juergen Gross wrote:
> The default for the Xen hypervisor is to not enable VPMU in order to
> avoid security issues. In this case the Linux kernel will issue the
> message "Could not initialize VPMU for cpu 0, error -95" which looks
> more like an error than a normal state.
>
> Change the message to something less scary in case the hypervisor
> returns EOPNOTSUPP when trying to activate VPMU.
>
> Signed-off-by: Juergen Gross <jgross@...e.com>

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>