linux-kernel - Re: [PATCH v2 6/6] ACPI: RISCV: Enable ACPI based NUMA

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Date: Sun, 7 Apr 2024 10:53:21 +0800
From: Haibo Xu <xiaobo55x@...il.com>
To: Sunil V L <sunilvl@...tanamicro.com>
Cc: "Luck, Tony" <tony.luck@...el.com>, "Xu, Haibo1" <haibo1.xu@...el.com>, 
	"ajones@...tanamicro.com" <ajones@...tanamicro.com>, Paul Walmsley <paul.walmsley@...ive.com>, 
	Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
	"Rafael J. Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>, 
	"Moore, Robert" <robert.moore@...el.com>, Conor Dooley <conor.dooley@...rochip.com>, 
	Guo Ren <guoren@...nel.org>, Alexandre Ghiti <alexghiti@...osinc.com>, 
	Greentime Hu <greentime.hu@...ive.com>, Charlie Jenkins <charlie@...osinc.com>, 
	Sami Tolvanen <samitolvanen@...gle.com>, Zong Li <zong.li@...ive.com>, 
	Jisheng Zhang <jszhang@...nel.org>, Baoquan He <bhe@...hat.com>, 
	Clément Léger <cleger@...osinc.com>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Chen Jiahao <chenjiahao16@...wei.com>, 
	Arnd Bergmann <arnd@...db.de>, James Morse <james.morse@....com>, 
	"Russell King (Oracle)" <rmk+kernel@...linux.org.uk>, Evan Green <evan@...osinc.com>, 
	Samuel Holland <samuel.holland@...ive.com>, Marc Zyngier <maz@...nel.org>, 
	Anup Patel <apatel@...tanamicro.com>, Ard Biesheuvel <ardb@...nel.org>, 
	Yuntao Wang <ytcoode@...il.com>, "Schofield, Alison" <alison.schofield@...el.com>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, "Williams, Dan J" <dan.j.williams@...el.com>, 
	"linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>, 
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, 
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>, 
	"acpica-devel@...ts.linux.dev" <acpica-devel@...ts.linux.dev>
Subject: Re: [PATCH v2 6/6] ACPI: RISCV: Enable ACPI based NUMA

On Wed, Apr 3, 2024 at 11:54 AM Sunil V L <sunilvl@...tanamicro.com> wrote:
>
> On Mon, Apr 01, 2024 at 04:57:30PM +0000, Luck, Tony wrote:
> > >> If the firmware didn't provide the SRAT/SLIT on ACPI based systems, then
> > >> there will be a message "Failed to initialise from firmware" from
> > >> arch_acpi_numa_init(). This is not specific to RISC-V. But I am
> > >> wondering why should it be pr_info instead of pr_debug.
> > >>
> > >
> > > My understanding is maybe it just wants to expose explicit logs to
> > > avoid any potential bugs from FW or Kernel.
> >
> > There are lots of ACPI enabled systems that aren't NUMA (single
> > socket servers, desktops, laptops). Making this "pr_info()" would just
> > add noise to the boot on all of those.
> >
> Exactly. But this is an existing pr_info message across architectures.
> My suggestion is to add one more patch in this series to convert
> this to pr_debug unless someone has strong reason to keep it pr_info.
>

Sure. I will add a patch to fix it in v3.

Thanks,
Haibo

> Thanks,
> Sunil