[PATCH 4/5] x86/efi: Correct ident mapping of efi old_map when kalsr enabled

2017-05-26 Thread Matt Fleming
From: Baoquan He For EFI with 'efi=old_map' kernel option specified, Kernel will panic when kaslr is enabled. The back trace is: BUG: unable to handle kernel paging request at 7febd57e IP: 0x7febd57e PGD 1025a067 PUD 0 Oops: 0010 [#1] SMP [ ... ] Call Trace: ?

[PATCH 4/5] x86/efi: Correct ident mapping of efi old_map when kalsr enabled

2017-05-26 Thread Matt Fleming
From: Baoquan He For EFI with 'efi=old_map' kernel option specified, Kernel will panic when kaslr is enabled. The back trace is: BUG: unable to handle kernel paging request at 7febd57e IP: 0x7febd57e PGD 1025a067 PUD 0 Oops: 0010 [#1] SMP [ ... ] Call Trace: ? efi_call+0x58/0x90 ?