linux-kernel - Re: [PATCH v3 02/11] x86/kexec: Add extra pointers to transition page table PGD, PUD, PMD and PTE

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Message-Id: <50EAA7F402000078000B34C3@nat28.tlf.novell.com>
Date:	Mon, 07 Jan 2013 09:48:20 +0000
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"Daniel Kiper" <daniel.kiper@...cle.com>
Cc:	<andrew.cooper3@...rix.com>, <x86@...nel.org>,
	<tglx@...utronix.de>, <kexec@...ts.infradead.org>,
	<virtualization@...ts.linux-foundation.org>,
	"xen-devel" <xen-devel@...ts.xen.org>, <konrad.wilk@...cle.com>,
	<maxim.uvarov@...cle.com>, <mingo@...hat.com>, <vgoyal@...hat.com>,
	<linux-kernel@...r.kernel.org>, <ebiederm@...ssion.com>,
	<hpa@...or.com>
Subject: Re: [PATCH v3 02/11] x86/kexec: Add extra pointers to
 transition page table PGD, PUD, PMD and PTE

>>> On 04.01.13 at 18:25, Daniel Kiper <daniel.kiper@...cle.com> wrote:
> Right, so where is virtual mapping of control page established?
> I could not find relevant code in SLES kernel which does that.

In the hypervisor (xen/arch/x86/machine_kexec.c:machine_kexec_load()).
xen/arch/x86/machine_kexec.c:machine_kexec() then simply uses
image->page_list[1].

Jan

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