linux-kernel - Re: EFI and multiboot2 devlopment work for Xen

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20131023070528.GQ3626@debian70-amd64.local.net-space.pl>
Date:	Wed, 23 Oct 2013 09:05:28 +0200
From:	Daniel Kiper <daniel.kiper@...cle.com>
To:	"Vladimir 'φ-coder/phcoder' Serbinenko" 
	<phcoder@...il.com>
Cc:	The development of GNU GRUB <grub-devel@....org>,
	boris.ostrovsky@...cle.com, david.woodhouse@...el.com,
	ian.campbell@...rix.com, jbeulich@...e.com, keir@....org,
	konrad.wilk@...cle.com, pjones@...hat.com,
	richard.l.maliszewski@...el.com, ross.philipson@...rix.com,
	stefano.stabellini@...citrix.com, xen-devel@...ts.xen.org,
	linux-kernel@...r.kernel.org
Subject: Re: EFI and multiboot2 devlopment work for Xen

On Tue, Oct 22, 2013 at 10:54:44AM +0200, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
> On 21.10.2013 23:16, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
> > Mail is big, I think I got your essential points but I didn't read it whole.
> > On 21.10.2013 14:57, Daniel Kiper wrote:
> >> Hi,
> >>
> >> During work on multiboot2 protocol support for Xen it was discovered
> >> that memory map passed via relevant tag could not represent wide range
> >> of memory types available on EFI platforms. Additionally, GRUB2
> >> implementation calls ExitBootServices() on them just before jumping
> >> into loaded image. In this situation loaded system could not clearly
> >> identify reserved memory regions, EFI runtime services regions and others.
> >>
> > Will a multiboot2 tag with whole EFI memory map solve your problem?
> I added such a tag in documentation and wrote a patch for it (attached).

Thanks. Could you send me a pointer to current multiboot2 protocol docs?

> Awaiting for someone to test it to commit

On first sight it looks quite nice. However, as I know Solaris guys
prepared similar solution. I am not sure it was discussed with GRUB2
guys. However, I think that it is worth coordinating both works and
do not break existing solution if it is possible.

I will try to get more details about Solaris implementation.

Daniel
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/