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

From: Borislav Petkov
Date: Fri Apr 26 2019 - 05:58:08 EST

On Fri, Apr 26, 2019 at 05:51:34PM +0800, Baoquan He wrote:
> I can make a patch to add a bit into xloadflags, to indicate that this
> is kexec-ed kernel. It can help to differentiate kexec-ed kernel from
> kdump kernel.

>From the recent snafu, the only thing we needed is to differentiate
between the *first* kernel and the following kernel(s) which has been
started/loaded using a kexec syscall.


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