Date: Fri, 13 Sep 2013 13:26:54 +0200
From: Borislav Petkov <bp@alien8.de>
To: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
        linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org,
        kexec@lists.infradead.org, akpm@linux-foundation.org,
        zohar@linux.vnet.ibm.com, d.kasatkin@samsung.com,
        ebiederm@xmission.com, matthew.garrett@nebula.com
Subject: Re: [PATCH 15/16] bootparam: Pass acpi_rsdp pointer in bootparam
Message-ID: <20130913112654.GA12095@x1.alien8.de>
References: <1378849471-10521-1-git-send-email-vgoyal@redhat.com>
 <1378849471-10521-16-git-send-email-vgoyal@redhat.com>
 <522FA2A8.8080703@zytor.com>
 <20130911114419.GB31551@x1.alien8.de>
 <20130911134534.GB15364@redhat.com>
 <20130911143216.GA933@x1.alien8.de>
 <20130912064930.GA5288@dhcp-16-126.nay.redhat.com>
 <20130912125350.GB9280@x1.alien8.de>
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On Fri, Sep 13, 2013 at 03:12:40PM +0800, Dave Young wrote:
> Also the fw_vendor, runtime, tables elements will be fixed up to use
> virtual address after 1st kernel call SetVirtualAddress, so even with
> 1:1 mapping we still need save them and use in kexec kernel.

As I said a couple of times already, 1:1 mapping is a no go.

Concerning the runtime services, we need to pass the UEFI memory map to
the kexec'ed kernel because it needs to know those to start mapping them
from -4G virtual downwards.

-- 
Regards/Gruss,
Boris.
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