From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Xen-devel <xen-devel@lists.xensource.com>,
the arch/x86 maintainers <x86@kernel.org>,
Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Subject: Re: [PATCH 3/3] xen/microcode: partially enable even for non-privileged kernels
Date: Mon, 15 Nov 2010 11:02:45 -0500 [thread overview]
Message-ID: <20101115160245.GD345@dumpdata.com> (raw)
In-Reply-To: <049ad0809c51dedebab0b8e4bfcf58f5f26375b7.1289519130.git.jeremy.fitzhardinge@citrix.com>
On Thu, Nov 11, 2010 at 03:58:06PM -0800, Jeremy Fitzhardinge wrote:
> From: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
>
> Don't attempt to load microcode on non-privileged kernels. Kernels
The previous patch had this:
if (!xen_initial_domain())
+ return NULL;
which pretty much made non-priviliged kernels not do any micro code loading.
It sounds like this patch is just to not compile the Xen microcode code
if CONFIG_DOM0 is not enabled?
> compiled without privileged support just get vestigial Xen detection
> to skip loading altogether; kernels with privileged support will
> load microcode if running privileged. In either case, the normal
> Intel/AMD microcode loader is skipped under Xen.
next prev parent reply other threads:[~2010-11-15 16:03 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-11 23:58 [PATCH 0/3] Xen Microcode update driver for 2.6.38 Jeremy Fitzhardinge
2010-11-11 23:58 ` [PATCH 1/3] xen dom0: Add support for the platform_ops hypercall Jeremy Fitzhardinge
2010-11-15 15:48 ` Konrad Rzeszutek Wilk
2010-11-16 1:14 ` [Xen-devel] " Jeremy Fitzhardinge
2010-11-16 15:52 ` Konrad Rzeszutek Wilk
2010-11-11 23:58 ` [PATCH 2/3] xen: add CPU microcode update driver Jeremy Fitzhardinge
2010-11-15 15:59 ` Konrad Rzeszutek Wilk
2010-11-16 1:16 ` [Xen-devel] " Jeremy Fitzhardinge
2010-11-11 23:58 ` [PATCH 3/3] xen/microcode: partially enable even for non-privileged kernels Jeremy Fitzhardinge
2010-11-15 16:02 ` Konrad Rzeszutek Wilk [this message]
2010-11-16 1:17 ` [Xen-devel] " Jeremy Fitzhardinge
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