linux-kernel - Re: [PATCH v4 00/12] kexec kernel efi runtime support

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: <20131202023252.GB3999@dhcp-16-126.nay.redhat.com>
Date:	Mon, 2 Dec 2013 10:32:52 +0800
From:	Dave Young <dyoung@...hat.com>
To:	Borislav Petkov <bp@...en8.de>
Cc:	Matt Fleming <matt@...sole-pimps.org>,
	linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org,
	x86@...nel.org, mjg59@...f.ucam.org, hpa@...or.com,
	James.Bottomley@...senPartnership.com, vgoyal@...hat.com,
	ebiederm@...ssion.com, horms@...ge.net.au,
	kexec@...ts.infradead.org, greg@...ah.com, toshi.kani@...com
Subject: Re: [PATCH v4 00/12] kexec kernel efi runtime support

On 11/29/13 at 06:02pm, Borislav Petkov wrote:
> On Fri, Nov 29, 2013 at 04:28:22PM +0800, Dave Young wrote:
> > I think for anyone who are using early_memremap should know this is a
> > normal kernel memory instead of real __iomem
> 
> You can never ever assume that people are using kernel interfaces
> correctly.

But the semantic of early_memreamp should be that it will just return
a normal memory pointer instead of iomem so the fix to convert the internal
implementation to return a __force __kernel make sense to me.

For iounmap I think since we have early_memremap, we have reason to add
early_memunmap() so sparse will be happy.

Thanks
Dave
--
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/