Re: [PATCH 1/3] kexec: Prevent removal of memory in use by a loaded kexec image

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On Mon, 13 Apr 2020 08:15:23 -0500 ebiederm@xxxxxxxxxxxx (Eric W. Biederman) wrote:

> > For 3), people can still use kexec_load and develop/fix for it, if no
> > kexec_file_load supported. But 32-bit arm should be a different one,
> > more like i386, we will leave it as is, and fix anything which could
> > break it. But people really expects to improve or add feature to it? E.g
> > in this patchset, the mem hotplug issue James raised, I assume James is
> > focusing on arm64, x86_64, but not 32-bit arm. As DavidH commented in
> > another reply, people even don't agree to continue supporting memory
> > hotplug on 32-bit system. We ever took effort to fix a memory hotplug
> > bug on i386 with a patch, but people would rather set it as BROKEN.
> 
> For memory hotplug just reload.  Userspace already gets good events.
> 
> We should not expect anything except a panic kernel to be loaded over a
> memory hotplug event. The kexec on panic code should actually be loaded
> in a location that we don't reliquish if asked for it.

Is that a nack for James's patchset?




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