linux-kernel - Re: [PATCH v6 10/14] x86/setup: use memblock_reserve

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Message-ID: <1ccfa9a9-f7fb-4481-ab6b-12866c1e1577@intel.com>
Date: Mon, 28 Apr 2025 15:15:52 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Changyuan Lyu <changyuanl@...gle.com>, linux-kernel@...r.kernel.org
Cc: akpm@...ux-foundation.org, anthony.yznaga@...cle.com, arnd@...db.de,
 ashish.kalra@....com, benh@...nel.crashing.org, bp@...en8.de,
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Subject: Re: [PATCH v6 10/14] x86/setup: use memblock_reserve_kern for memory
 used by kernel

On 4/10/25 22:37, Changyuan Lyu wrote:
> From: "Mike Rapoport (Microsoft)" <rppt@...nel.org>
> 
> memblock_reserve() does not distinguish memory used by firmware from memory
> used by kernel.
> 
> The distinction is nice to have for accounting of early memory allocations
> and reservations, but it is essential for kexec handover (kho) to know how
> much memory kernel consumes during boot.
> 
> Use memblock_reserve_kern() to reserve kernel memory, such as kernel image,
> initrd and setup data.

Acked-by: Dave Hansen <dave.hansen@...ux.intel.com>