Re: Mapping of ZONE_HIGHMEM in kernel address space in 32bit x86

2013-05-13 Thread Sergio Andrés Gómez del Real
Sure, I forgot what you said; precisely the mechanism allows to use lots of linear space without necessarily allocating physical memory (demand paging and the like). What about the rest of what I said? Is it correct or is there something wrong about it? Thanks. On 5/13/13, valdis.kletni...@vt.edu

Re: Mapping of ZONE_HIGHMEM in kernel address space in 32bit x86

2013-05-13 Thread Sergio Andrés Gómez del Real
I've got some questions regarding this linear to physical address mapping on x86 architecture; I'm not sure I've grassped the whole thing. Before asking, I'd like to be sure I understand some basic things about this: 1. Addresses within the kernel are linked to start at 0xC000 so, that the ker