lkml.org 
[lkml]   [2003]   [Nov]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: virt_to_page/pci_map_page vs. pci_map_single
From
Date
>>>>> "David" == David Mosberger <davidm@napali.hpl.hp.com> writes:

Jes> Hmmm, my brain has gotten ia64ified ;-) It's basically the normal
Jes> mappings of the kernel, ie. the kernel text/data/bss segments as
Jes> well as anything you do not get back as a dynamic mapping such as
Jes> ioremap/vmalloc/kmap.

David> I don't think it's safe to use virt_to_page() on static kernel
David> addresses (text, data, and bss). For example, ia64 linux
David> nowadays uses a virtual mapping for the static kernel memory,
David> so it's not part of the identity-mapped segment.

Mmmm good point, I stand corrected. It doesn't really make sense to do
it anyway, but maybe it's worth underlining in the doc if it hasn't
been done so already.

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

\
 
 \ /
  Last update: 2005-03-22 13:58    [W:0.072 / U:0.384 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site