linux-kernel - Re: [PATCH] add iommu_num

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]

Date:	Tue, 29 Jul 2008 12:26:55 +0200
From:	Joerg Roedel <joerg.roedel@....com>
To:	David Miller <davem@...emloft.net>
CC:	sfr@...b.auug.org.au, fujita.tomonori@....ntt.co.jp, mingo@...e.hu,
	mingo@...hat.com, tglx@...utronix.de, linux-kernel@...r.kernel.org,
	iommu@...ts.linux-foundation.org, bhavna.sarathy@....com,
	robert.richter@....com, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, jbarnes@...tuousgeek.org,
	linux-next@...r.kernel.org
Subject: Re: [PATCH] add iommu_num_pages helper function

On Tue, Jul 29, 2008 at 03:10:05AM -0700, David Miller wrote:
> From: Joerg Roedel <joerg.roedel@....com>
> Date: Tue, 29 Jul 2008 11:50:27 +0200
> 
> > I think moving that function to x86-only code is the best solution for
> > now. Before moving it back to generic code we need an architecture
> > independent way to find out the IOMMU page size.
> 
> My suggestion (again) is to pass it in as a "const unsigned long
> io_page_size" argument and update the callers.

Ok, this has the advantage that it supports more than one IOMMU page
size per architecture and its also less intrusive.

Joerg

-- 
           |           AMD Saxony Limited Liability Company & Co. KG
 Operating |         Wilschdorfer Landstr. 101, 01109 Dresden, Germany
 System    |                  Register Court Dresden: HRA 4896
 Research  |              General Partner authorized to represent:
 Center    |             AMD Saxony LLC (Wilmington, Delaware, US)
           | General Manager of AMD Saxony LLC: Dr. Hans-R. Deppe, Thomas McCoy

--
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/