Messages in this thread | | | Subject | Re: virt_to_page/pci_map_page vs. pci_map_single | From | Jes Sorensen <> | Date | 04 Nov 2003 04:44:36 -0500 |
| |
>>>>> "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/
| |