linux-kernel - [PATCH] x86: Improve description of IA32_EMULATION_DEFAULT

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Message-ID: <20240130104543.28840812.hanno@hboeck.de>
Date: Tue, 30 Jan 2024 10:45:43 +0100
From: Hanno Böck <hanno@...eck.de>
To: tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
  dave.hansen@...ux.intel.com
Cc: x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] x86: Improve description of IA32_EMULATION_DEFAULT_DISABLED

The description of the option disables a default, but does not mention
how to change that default. To make it easier to find out, mention boot
parameter ia32_emulation.

Signed-off-by: Hanno Böck <hanno@...eck.de>
---

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5edec175b..a65ff33e0 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -3006,8 +3006,10 @@ config IA32_EMULATION_DEFAULT_DISABLED
 	depends on IA32_EMULATION
 	help
 	  Make IA32 emulation disabled by default. This prevents loading 32-bit
-	  processes and access to 32-bit syscalls. If unsure, leave it to its
-	  default value.
+	  processes and access to 32-bit syscalls. If set, IA32 emulation can be
+	  re-enabled with the boot parameter ia32_emulation=true.
+
+	  If unsure, leave it to its default value.
 
 config X86_X32_ABI
 	bool "x32 ABI for 64-bit mode"