Re: [Xen-devel] [RFC PATCH v2 02/14] x86/boot: Reserve live update boot memory

[Wei Liu <wl@xxxxxxx>]

On Wed, Jan 22, 2020 at 08:53:45AM +0000, David Woodhouse wrote:
> From: David Woodhouse <dwmw@xxxxxxxxxxxx>
> 
> For live update to work, it will need a region of memory that can be
> given to the boot allocator while it parses the state information from
> the previous Xen and works out which of the other pages of memory it
> can consume.
> 
> Reserve that like the crashdump region, and accept it on the command
> line. Use only that region for early boot, and register the remaining
> RAM (all of it for now, until the real live update happens) later.
> 
> Signed-off-by: David Woodhouse <dwmw@xxxxxxxxxxxx>
> ---
>  xen/arch/x86/setup.c         | 114 ++++++++++++++++++++++++++++++++---
>  xen/include/asm-x86/config.h |   1 +

You also need to patch docs/misc/xen-command-line.pandoc for the new
command line option.

Wei.

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel