On Thu, Sep 16, 2021 at 12:09:27PM +0300, Mike Rapoport wrote:
> I think the first sentence about reserving memory before memblock
> allocations are possible is important and I think we should keep it.
I expanded that comment this way:
/*
* Do some memory reservations *before* memory is added to memblock, so
* memblock allocations won't overwrite it.
*
* After this point, everything still needed from the boot loader or
* firmware or kernel text should be early reserved or marked not RAM in
* e820. All other memory is free game.
*
* This call needs to happen before e820__memory_setup() which calls the
* xen_memory_setup() on Xen dom0 which relies on the fact that those
* early reservations have happened already.
*/
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
