On Thu, Jul 30, 2015 at 02:17:23PM +0100, Matt Fleming wrote: > On Thu, 30 Jul, at 08:31:16PM, joeyli wrote: > > > > I think hibernate overwrite it. > > We absolutely must get a more detailed answer before going any further. > > Simply put, if we're remapping the EFI regions into the virtual address > space and calling SetVirtualAddressMap() on hibernate resume there is no > reason that anyone should be using the old mappings. > > And since you've demonstrated that we *are* using the old mappings, > we've likely got a bug somewhere that we need to get a handle on before > we paper over the issue. > > Where exactly is the old mapping address being used? Is it that > efi.systab->runtime->get_variable is incorrect? If you could paste the > disassembled output where the page fault occurs, that would be helpful. > > -- > Matt Fleming, Intel Open Source Technology Center OK, understood! Thanks for your suggestion! But, I have a question about mapping Boot Code/Data to -4G area. I understand we need Runtime regions, and 1:1 mapping is the workaround of some buggy BIOS. But why should kernel mapping Boot regions to -4G area? Thanks a lot! Joey Lee -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
