Messages in this thread | | | Date | Fri, 7 Sep 2018 13:22:07 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH V4 3/3] x86/efi: Introduce EFI_PAGE_FAULT_HANDLER |
| |
On Thu, Sep 06, 2018 at 04:27:48PM -0700, Sai Praneeth Prakhya wrote: > From: Sai Praneeth <sai.praneeth.prakhya@intel.com> > > There may exist some buggy UEFI firmware implementations that might > access efi regions other than EFI_RUNTIME_SERVICES_<CODE/DATA> even > after the kernel has assumed control of the platform. This violates UEFI > specification. > > If selected, this debug option will print a warning message if the UEFI > firmware tries to access any memory region which it shouldn't. Along > with the warning, the efi page fault handler will also try to recover > from the page fault triggered by the firmware so that the machine > doesn't hang.
Why make this optional?
| |