On 06/15/2012 10:07 PM, Christoffer Dall wrote: > Adds support in the identity mapping feature that allows KVM to setup > identity mapping for the Hyp mode with the AP[1] bit set as required by > the specification and also supports freeing created sub pmd's after > finished use. > > These two functions: > - hyp_idmap_add(pgd, addr, end); > - hyp_idmap_del(pgd, addr, end); > are essentially calls to the same function as the non-hyp versions but > with a different argument value. KVM calls these functions to setup > and teardown the identity mapping used to initialize the hypervisor. > > Note, the hyp-version of the _del function actually frees the pmd's > pointed to by the pgd as opposed to the non-hyp version which just > clears them. I asked previously what happens if two data structures share a page, and one of them is removed. Is that handled now? How? Why not just identity map all memory? You can use large pages so it's fast and doesn't consume a lot of page table memory.-- error compiling committee.c: too many arguments to function
