Commits
Borislav Petkov committed a5d90c923bc
x86/efi: Quirk out SGI UV Alex reported hitting the following BUG after the EFI 1:1 virtual mapping work was merged, kernel BUG at arch/x86/mm/init_64.c:351! invalid opcode: 0000 [#1] SMP Call Trace: [<ffffffff818aa71d>] init_extra_mapping_uc+0x13/0x15 [<ffffffff818a5e20>] uv_system_init+0x22b/0x124b [<ffffffff8108b886>] ? clockevents_register_device+0x138/0x13d [<ffffffff81028dbb>] ? setup_APIC_timer+0xc5/0xc7 [<ffffffff8108b620>] ? clockevent_delta2ns+0xb/0xd [<ffffffff818a3a92>] ? setup_boot_APIC_clock+0x4a8/0x4b7 [<ffffffff8153d955>] ? printk+0x72/0x74 [<ffffffff818a1757>] native_smp_prepare_cpus+0x389/0x3d6 [<ffffffff818957bc>] kernel_init_freeable+0xb7/0x1fb [<ffffffff81535530>] ? rest_init+0x74/0x74 [<ffffffff81535539>] kernel_init+0x9/0xff [<ffffffff81541dfc>] ret_from_fork+0x7c/0xb0 [<ffffffff81535530>] ? rest_init+0x74/0x74 Getting this thing to work with the new mapping scheme would need more work, so automatically switch to the old memmap layout for SGI UV. Acked-by: Russ Anderson <rja@sgi.com> Cc: Alex Thorlton <athorlton@sgi.com Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Matt Fleming <matt.fleming@intel.com>