Re: Use PCI ROMs from EFI boot services

From: H. Peter Anvin
Date: Wed Dec 05 2012 - 19:36:51 EST

On 12/05/2012 04:30 PM, Yinghai Lu wrote:
> On Wed, Dec 5, 2012 at 4:21 PM, H. Peter Anvin <hpa@xxxxxxxxx> 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.

I don't think there is anything security-sensitive about that
information, at least not to root. I could be wrong, of course; I
wouldn't mind security people telling me about that.


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