linux-kernel - [PATCH v4 26/26] docs: move numa=fake description to kernel-parameters.txt

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Message-ID: <20240807064110.1003856-27-rppt@kernel.org>
Date: Wed,  7 Aug 2024 09:41:10 +0300
From: Mike Rapoport <rppt@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Alexander Gordeev <agordeev@...ux.ibm.com>,
	Andreas Larsson <andreas@...sler.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arnd Bergmann <arnd@...db.de>,
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	Catalin Marinas <catalin.marinas@....com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
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	Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: [PATCH v4 26/26] docs: move numa=fake description to kernel-parameters.txt

From: "Mike Rapoport (Microsoft)" <rppt@...nel.org>

NUMA emulation can be now enabled on arm64 and riscv in addition to x86.

Move description of numa=fake parameters from x86 documentation of
admin-guide/kernel-parameters.txt

Suggested-by: Zi Yan <ziy@...dia.com>
Signed-off-by: Mike Rapoport (Microsoft) <rppt@...nel.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Tested-by: Jonathan Cameron <Jonathan.Cameron@...wei.com> [arm64 + CXL via QEMU]
Acked-by: Dan Williams <dan.j.williams@...el.com>
Acked-by: David Hildenbrand <david@...hat.com>
---
 Documentation/admin-guide/kernel-parameters.txt | 15 +++++++++++++++
 Documentation/arch/x86/x86_64/boot-options.rst  | 12 ------------
 2 files changed, 15 insertions(+), 12 deletions(-)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index f1384c7b59c9..bcdee8984e1f 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -4123,6 +4123,21 @@
 			Disable NUMA, Only set up a single NUMA node
 			spanning all memory.
 
+	numa=fake=<size>[MG]
+			[KNL, ARM64, RISCV, X86, EARLY]
+			If given as a memory unit, fills all system RAM with
+			nodes of size interleaved over physical nodes.
+
+	numa=fake=<N>
+			[KNL, ARM64, RISCV, X86, EARLY]
+			If given as an integer, fills all system RAM with N
+			fake nodes interleaved over physical nodes.
+
+	numa=fake=<N>U
+			[KNL, ARM64, RISCV, X86, EARLY]
+			If given as an integer followed by 'U', it will
+			divide each physical node into N emulated nodes.
+
 	numa_balancing=	[KNL,ARM64,PPC,RISCV,S390,X86] Enable or disable automatic
 			NUMA balancing.
 			Allowed values are enable and disable
diff --git a/Documentation/arch/x86/x86_64/boot-options.rst b/Documentation/arch/x86/x86_64/boot-options.rst
index 137432d34109..98d4805f0823 100644
--- a/Documentation/arch/x86/x86_64/boot-options.rst
+++ b/Documentation/arch/x86/x86_64/boot-options.rst
@@ -170,18 +170,6 @@ NUMA
     Don't parse the HMAT table for NUMA setup, or soft-reserved memory
     partitioning.
 
-  numa=fake=<size>[MG]
-    If given as a memory unit, fills all system RAM with nodes of
-    size interleaved over physical nodes.
-
-  numa=fake=<N>
-    If given as an integer, fills all system RAM with N fake nodes
-    interleaved over physical nodes.
-
-  numa=fake=<N>U
-    If given as an integer followed by 'U', it will divide each
-    physical node into N emulated nodes.
-
 ACPI
 ====
 
-- 
2.43.0