Re: [RFC PATCH 2/4] mm: Add support for unaccepted memory hotplug

[Borislav Petkov]

On Wed, Nov 26, 2025 at 11:12:13AM +0000, Kiryl Shutsemau wrote:
> > diff --git a/arch/x86/boot/compressed/efi.h b/arch/x86/boot/compressed/efi.h
> > index 4f7027f33def..a220a1966cae 100644
> > --- a/arch/x86/boot/compressed/efi.h
> > +++ b/arch/x86/boot/compressed/efi.h
> > @@ -102,6 +102,7 @@ struct efi_unaccepted_memory {
> >  	u32 unit_size;
> >  	u64 phys_base;
> >  	u64 size;
> > +	bool mem_reserved;
> >  	unsigned long *bitmap;
> >  };
> >  
> 
> Again, this is ABI break for kexec.

ABI break for kexec? Is that a thing?

Since when do we enforce ABI compatibility for kexec and where are we
documenting that?

-- 
Regards/Gruss,
    Boris.

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