From: David Vrabel <david.vrabel@citrix.com>
To: Boris Ostrovsky <boris.ostrovsky@oracle.com>,
<konrad.wilk@oracle.com>, <david.vrabel@citrix.com>
Cc: <xen-devel@lists.xenproject.org>, <mcgrof@kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [Xen-devel] [PATCH] xen/x86: Zero out .bss for PV guests
Date: Wed, 24 Feb 2016 14:12:42 +0000 [thread overview]
Message-ID: <56CDBA5A.1000600@citrix.com> (raw)
In-Reply-To: <1456178767-8038-1-git-send-email-boris.ostrovsky@oracle.com>
On 22/02/16 22:06, Boris Ostrovsky wrote:
> Baremetal kernels clear .bss early in the boot. Since Xen PV guests don't
> excecute that early code they should do it too.
>
> (Since we introduce macros for specifying 32- and 64-bit registers we
> can get rid of ifdefs in startup_xen())
.bss must have been cleared for PV guests otherwise they would be
horribly broken. What was the method and why is it no longer sufficient?
David
next prev parent reply other threads:[~2016-02-24 14:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-22 22:06 [PATCH] xen/x86: Zero out .bss for PV guests Boris Ostrovsky
2016-02-24 14:12 ` David Vrabel [this message]
2016-02-24 14:15 ` [Xen-devel] " Andrew Cooper
2016-02-24 14:52 ` Boris Ostrovsky
2016-02-24 14:58 ` David Vrabel
2016-02-24 16:22 ` Luis R. Rodriguez
2016-02-24 16:46 ` Boris Ostrovsky
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