Quoting Lorenzo Pieralisi (2014-02-22 04:09:10) > On Sat, Feb 22, 2014 at 10:38:40AM +0000, Russell King - ARM Linux wrote: > > On Wed, Feb 19, 2014 at 04:12:54PM +0000, Lorenzo Pieralisi wrote: > > > > + cpu_switch_mm(idmap_pgd, &init_mm); > > > > You need the idmap_pgd in place to call cpu_resume at it's physical > > address. Other page tables just won't do here. It's well established > > that this page table must be in place for the resume paths to work. > > Well, we do not need idmap page tables for copying the restore_pblist, > but we do need a set of tables that won't be corrupted by the copy and > idmap does the trick (I was confused because 1:1 mappings are not needed > for the copy itself). > > The switch to idmap is done for us in soft_reboot anyway before jumping to > cpu_resume and that's required, as you said.
Ok, so I'll leave the cpu_switch_mm as is for the next patchset. Thanks Lorenzo, Russ and Russell! Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
