linux-kernel - Re: [RFC v2 0/2] Early use of boot service memory

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: <20131121233705.GA32121@srcf.ucam.org>
Date:	Thu, 21 Nov 2013 23:37:05 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Jerry Hoemann <jerry.hoemann@...com>, rob@...dley.net,
	tglx@...utronix.de, mingo@...hat.com, x86@...nel.org,
	matt.fleming@...el.com, yinghai@...nel.org,
	akpm@...ux-foundation.org, bp@...e.de, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org,
	penberg@...nel.org, mingo.kernel.org@...il.com, vgoyal@...hat.com
Subject: Re: [RFC v2 0/2] Early use of boot service memory

On Thu, Nov 21, 2013 at 03:18:41PM -0800, H. Peter Anvin wrote:
> On 11/21/2013 03:07 PM, Matthew Garrett wrote:
> > This is a problem we have to solve, but I don't think this is the right 
> > way to solve it. Why do we not just reattempt to perform the allocation 
> > immediately after we've freed the boot services regions?
> > 
> 
> Wouldn't the memory map already have gotten scrambled all to hell by then?

If we couldn't map a 64MB region in low memory earlier then it's likely 
to have been because there was a 64MB or greater boot services region.

-- 
Matthew Garrett | mjg59@...f.ucam.org
--
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/