linux-kernel - Re: [PATCH v3 1/1] mm: numa_memblks: introduce numa_add_reserved

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Message-ID: <06a0abfd-5508-4fb5-8a96-a13cf3d8aca7@roeck-us.net>
Date: Tue, 3 Jun 2025 06:06:37 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: Yuquan Wang <wangyuquan1236@...tium.com.cn>
Cc: Jonathan.Cameron@...wei.com, dan.j.williams@...el.com, rppt@...nel.org,
	rafael@...nel.org, lenb@...nel.org, akpm@...ux-foundation.org,
	alison.schofield@...el.com, rrichter@....com, bfaccini@...dia.com,
	haibo1.xu@...el.com, david@...hat.com, chenhuacai@...nel.org,
	linux-cxl@...r.kernel.org, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	chenbaozi@...tium.com.cn, loongarch@...ts.linux.dev
Subject: Re: [PATCH v3 1/1] mm: numa_memblks: introduce
 numa_add_reserved_memblk

Hi,

On Thu, May 08, 2025 at 10:27:19AM +0800, Yuquan Wang wrote:
> acpi_parse_cfmws() currently adds empty CFMWS ranges to numa_meminfo
> with the expectation that numa_cleanup_meminfo moves them to
> numa_reserved_meminfo. There is no need for that indirection when it is
> known in advance that these unpopulated ranges are meant for
> numa_reserved_meminfo in support of future hotplug / CXL provisioning.
> 
> Introduce and use numa_add_reserved_memblk() to add the empty CFMWS
> ranges directly.
> 
> Signed-off-by: Yuquan Wang <wangyuquan1236@...tium.com.cn>

Just on case this has not been reported yet:

Building loongarch:defconfig ... failed
--------------
Error log:
drivers/acpi/numa/srat.c: In function 'acpi_parse_cfmws':
drivers/acpi/numa/srat.c:467:13: error: implicit declaration of function 'numa_add_reserved_memblk' 

Guenter