[PATCH v5 1/2] x86/kexec: Build identity mapping for EFI systab and ACPI tables

Borislav Petkov bp at alien8.de
Mon Apr 29 05:50:59 PDT 2019


On Sun, Apr 28, 2019 at 01:41:14PM +0800, Baoquan He wrote:
> About this place, do you think below change is OK to you?
> 
> ~~~
> The current code only builds identity mapping for physical memory during
> kexec-type loading. The regions reserved by firmware are not covered.
> In the later code change, the boot decompressing code of kexec-ed kernel
> will try to access EFI systab and ACPI tables, lacking identity mapping for
> them will cause error and reset system to firmware.

Yap, better.

Thx.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.



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