Re: [PATCH v4] x86/efi: Correct ident mapping of efi old_map when kalsr enabled

On Thu, 18 May, at 02:39:30PM, Baoquan He wrote: > 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]

Re: [PATCH v4] x86/efi: Correct ident mapping of efi old_map when kalsr enabled

Hi Baoquan, On 05/18/17 at 02:39pm, Baoquan He wrote: > 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

Re: [PATCH v4] x86/efi: Correct ident mapping of efi old_map when kalsr enabled

Hi Thomas, Could you help check again if this patch is OK to you? Last time you acked v2 post, however the pgd_populate become unavailable in non-p4d case when p4d relatd code merged into linus's tree, I have to change accordingly and repost. And with p4d code adding, the memory copying way is no

[PATCH v4] x86/efi: Correct ident mapping of efi old_map when kalsr enabled

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 ? printk+0x58/0x6f efi