linux-kernel - Re: [PATCH 1/7] x86/xen: Simplify set_aliased

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Message-ID: <57457295.6070709@citrix.com>
Date:	Wed, 25 May 2016 10:38:29 +0100
From:	Andrew Cooper <andrew.cooper3@...rix.com>
To:	Andy Lutomirski <luto@...nel.org>, <x86@...nel.org>
CC:	<linux-kernel@...r.kernel.org>, Borislav Petkov <bp@...en8.de>,
	Kees Cook <keescook@...omium.org>,
	Brian Gerst <brgerst@...il.com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	David Vrabel <dvrabel@...tab.net>,
	Jan Beulich <jbeulich@...e.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	xen-devel <xen-devel@...ts.xen.org>
Subject: Re: [PATCH 1/7] x86/xen: Simplify set_aliased_prot

On 24/05/16 23:48, Andy Lutomirski wrote:
> In aa1acff356bb ("x86/xen: Probe target addresses in
> set_aliased_prot() before the hypercall"), I added an explicit probe
> to work around a hypercall issue.  The code can be simplified by
> using probe_kernel_read.
>
> Cc: Andrew Cooper <andrew.cooper3@...rix.com>
> Cc: Boris Ostrovsky <boris.ostrovsky@...cle.com>
> Cc: David Vrabel <dvrabel@...tab.net>
> Cc: Jan Beulich <jbeulich@...e.com>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
> Cc: xen-devel <xen-devel@...ts.xen.org>
> Signed-off-by: Andy Lutomirski <luto@...nel.org>

Reviewed-by: Andrew Cooper <andrew.cooper3@...rix.com>