Re: [PATCH v3] x86/efi: Correct ident mapping of efi old_map when kalsr enabled

2017-05-16 Thread Baoquan He
On 05/17/17 at 11:35am, Baoquan He wrote: > On 05/17/17 at 10:55am, Dave Young wrote: > > Hi, Baoquan > > > arch/x86/platform/efi/efi_64.c | 69 > > > +- > > > 1 file changed, 61 insertions(+), 8 deletions(-) > > > > > > diff --git a/arch/x86/platform/efi/

Re: [PATCH v3] x86/efi: Correct ident mapping of efi old_map when kalsr enabled

2017-05-16 Thread Baoquan He
On 05/17/17 at 10:55am, Dave Young wrote: > Hi, Baoquan > > arch/x86/platform/efi/efi_64.c | 69 > > +- > > 1 file changed, 61 insertions(+), 8 deletions(-) > > > > diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c > > index c488

Re: [PATCH v3] x86/efi: Correct ident mapping of efi old_map when kalsr enabled

2017-05-16 Thread Dave Young
Hi, Baoquan On 05/13/17 at 11:56am, 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: 001

[PATCH v3] x86/efi: Correct ident mapping of efi old_map when kalsr enabled

2017-05-12 Thread 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 ? printk+0x58/0x6f efi