[RFC PATCH] kexec, x86/boot: map systab region in identity mapping before accessing it

Borislav Petkov bp at alien8.de
Fri Apr 19 04:36:21 PDT 2019


On Fri, Apr 19, 2019 at 01:28:01PM +0200, Borislav Petkov wrote:
> Read again what I said: "should all be passed through boot_params".
> Which means, boot_params should be extended with a field of a flag to
> say: "this is a kexec'ed kernel".

And by that I mean similar to the XLF_EFI_KEXEC mechanism. The first
kernel or kexec(1) should prepare the info needed by the kexec'ed
kernel.

-- 
Regards/Gruss,
    Boris.

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



More information about the kexec mailing list