On 12/02/13 at 06:31pm, Toshi Kani wrote: > On Mon, 2013-12-02 at 15:33 -0700, Toshi Kani wrote: > > On Fri, 2013-11-29 at 17:14 +0800, Dave Young wrote: > > > On 11/27/13 at 03:07pm, Borislav Petkov wrote: > > > > On Tue, Nov 26, 2013 at 01:57:52PM +0800, Dave Young wrote: > > > > > Add a new setup_data type SETUP_EFI for kexec use. > > > > > Passing the saved fw_vendor, runtime, config tables and > > > > > efi runtime mappings. > > > > > > > > > > When entering virtual mode, directly mapping the efi > > > > > runtime ragions which we passed in previously. And skip > > > > > the step to call SetVirtualAddressMap. > > > > > > > > > > Specially for HP z420 workstation it need another variable > > > > > saving, > > > > > > > > Why the special handling? Does that mean, this is going to be the case > > > > for other HP UEFI implementations too? > > > > > > I have only one HP machine for testing, Maybe Toshi can help to verify > > > on other machines. Just comment out the function efi_reuse_config to see > > > if kexec kernel panic. > > > > My system (HP prototype server) did not need the special handling in > > efi_reuse_config(). I will check with firmware team to get more > > information on this. > > I have one question. I think this special handling assumes that > efi.smbios contains a virtual address on HP z420. So, how does the 1st > kernel set a virtual address to efi.smbios in the first place? Hi, Toshi, It's originally a physical address, I think kernel does not change it. As the fw_vendor, runtime etc. are changed to virt addr by firmware, so I assume smbios on Hp z420 is also changed by firmware after becoming virtual mode. Thanks Dave -- 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
