Re: [PATCH] x86/efi: Add EFI_PGT_DUMP support for x86_32, kexec and efi=old_map

2017-05-11 Thread Sai Praneeth Prakhya
On Thu, 2017-05-11 at 13:18 +0200, Borislav Petkov wrote: > On Wed, May 10, 2017 at 03:49:05PM -0700, Sai Praneeth Prakhya wrote: > > From: Sai Praneeth > > > > EFI_PGT_DUMP, as the name suggests dumps efi page tables to dmesg during > > kernel boot. This feature is very useful while debugging pa

Re: [PATCH] x86/efi: Add EFI_PGT_DUMP support for x86_32, kexec and efi=old_map

2017-05-11 Thread Borislav Petkov
On Wed, May 10, 2017 at 03:49:05PM -0700, Sai Praneeth Prakhya wrote: > From: Sai Praneeth > > EFI_PGT_DUMP, as the name suggests dumps efi page tables to dmesg during > kernel boot. This feature is very useful while debugging page > faults/null pointer dereferences to efi related addresses. Pres

[PATCH] x86/efi: Add EFI_PGT_DUMP support for x86_32, kexec and efi=old_map

2017-05-10 Thread Sai Praneeth Prakhya
From: Sai Praneeth EFI_PGT_DUMP, as the name suggests dumps efi page tables to dmesg during kernel boot. This feature is very useful while debugging page faults/null pointer dereferences to efi related addresses. Presently, this feature is limited only to x86_64, so let's extend it to other efi c