Hi Boris, An EFI tree kernel panic'd during boot on one of my systems. It boots fine when efi=old_map option is specified. So, I think it is caused by your EFI virtual mapping changes. The panic message is as follows. I added some printk's to log the arguments of phys_efi_set_virtual_address_map(). The fault address is __pa(new_memmap) + 0x20 (too high for the map?). Thanks, -Toshi efi: >> Call phys_efi_set_virtual_address_map() efi: count 29 efi: desc_size 0x30 efi: new_memmap 0xffff8a03fec16800 efi: __pa(new_memmap) 0x203fec16800 BUG: unable to handle kernel paging request at 00000203fec16820 IP: [<0000000072dcda76>] 0x72dcda75 PGD 0 Oops: 0000 [#1] SMP Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.12.0+ #52 Hardware name: HP CB920s x1, BIOS Bundle: 005.028.018 SFW: 012.124.000 10/28/2013 task: ffffffff81a10480 ti: ffffffff81a00000 task.ti: ffffffff81a00000 RIP: 0010:[<0000000072dcda76>] [<0000000072dcda76>] 0x72dcda75 RSP: 0000:ffffffff81a01e08 EFLAGS: 00010206 RAX: 00000000725fee18 RBX: 00000000725feda0 RCX: 00000203fec16800 RDX: 0000000072dfe070 RSI: 0000000060000202 RDI: 0000000072dcdac8 RBP: 0000000072dd0560 R08: 0000000000000000 R09: 000000000000001d R10: 0000000000000030 R11: 8000000000000000 R12: ffff8a03fec16800 R13: 0000000000000001 R14: 000000000000001d R15: 000000000009c000 FS: 0000000000000000(0000) GS:ffff88087fa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000203fec16820 CR3: 000000000009c000 CR4: 00000000000406b0 Stack: 0000000072dfb88f 0000000000000001 0000000000000d08 0000000000000000 ffffffff81d79a98 0000000072dcdac8 0000000072dcdb93 0000000000000001 ffffffff81a01f80 0000000000000570 0000000000000000 0000000000000000 Call Trace: [<ffffffff81045cec>] ? efi_call4+0x6c/0xf0 [<ffffffff81b02f65>] ? efi_enter_virtual_mode+0x229/0x3f1 [<ffffffff81aebdf2>] ? start_kernel+0x36c/0x407 [<ffffffff81aeb88f>] ? repair_env_string+0x5c/0x5c [<ffffffff81aeb5a3>] ? x86_64_start_reservations+0x2a/0x2c [<ffffffff81aeb696>] ? x86_64_start_kernel+0xf1/0xf4 Code: Bad RIP value. RIP [<0000000072dcda76>] 0x72dcda75 RSP <ffffffff81a01e08> CR2: 00000203fec16820 ---[ end trace e50b25032c120443 ]--- -- 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
