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Date: Wed, 5 Dec 2012 16:30:24 -0800
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Subject: Re: Use PCI ROMs from EFI boot services
From: Yinghai Lu <yinghai@kernel.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>, Bjorn Helgaas <bhelgaas@google.com>,
        linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
        linux-efi@vger.kernel.org, mfleming@intel.com, dwmw2@infradead.org,
        "Eric W. Biederman" <ebiederm@xmission.com>
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On Wed, Dec 5, 2012 at 4:21 PM, H. Peter Anvin <hpa@zytor.com> wrote:
> On 12/05/2012 04:18 PM, Matthew Garrett wrote:

> Because it also needs to modify it.  Right now kexec userspace
> synthesizes struct boot_params from scratch, and does so incorrectly to
> boot.  I think we have setup_data exported via debugfs but IIRC we never
> got a strong enough use case for sysfs.

maybe we could try  to export setup_data pointer only /sys, and that
could be safe enough.