linux-kernel - [PATCH 3/3] arch/x86: Do not include <asm/bootparam.h> in several header files

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Message-ID: <20231206125433.18420-4-tzimmermann@suse.de>
Date:   Wed,  6 Dec 2023 13:38:39 +0100
From:   Thomas Zimmermann <tzimmermann@...e.de>
To:     ardb@...nel.org, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, dave.hansen@...ux.intel.com, x86@...nel.org,
        hpa@...or.com, bhelgaas@...gle.com, arnd@...db.de,
        zohar@...ux.ibm.com, dmitry.kasatkin@...il.com,
        paul@...l-moore.com, jmorris@...ei.org, serge@...lyn.com,
        javierm@...hat.com
Cc:     linux-arch@...r.kernel.org, linux-efi@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        Thomas Zimmermann <tzimmermann@...e.de>
Subject: [PATCH 3/3] arch/x86: Do not include <asm/bootparam.h> in several header files

Remove the include statement for <asm/bootparam.h> from several header
files that don't require it. Limits the exposure of the boot parameters
within the Linux kernel code.

Signed-off-by: Thomas Zimmermann <tzimmermann@...e.de>
---
 arch/x86/include/asm/kexec.h       | 1 -
 arch/x86/include/asm/mem_encrypt.h | 2 +-
 arch/x86/include/asm/sev.h         | 3 ++-
 arch/x86/include/asm/x86_init.h    | 2 --
 4 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/kexec.h b/arch/x86/include/asm/kexec.h
index c9f6a6c5de3c..91ca9a9ee3a2 100644
--- a/arch/x86/include/asm/kexec.h
+++ b/arch/x86/include/asm/kexec.h
@@ -25,7 +25,6 @@
 
 #include <asm/page.h>
 #include <asm/ptrace.h>
-#include <asm/bootparam.h>
 
 struct kimage;
 
diff --git a/arch/x86/include/asm/mem_encrypt.h b/arch/x86/include/asm/mem_encrypt.h
index 359ada486fa9..c1a8a3408c18 100644
--- a/arch/x86/include/asm/mem_encrypt.h
+++ b/arch/x86/include/asm/mem_encrypt.h
@@ -15,7 +15,7 @@
 #include <linux/init.h>
 #include <linux/cc_platform.h>
 
-#include <asm/bootparam.h>
+struct boot_params;
 
 #ifdef CONFIG_X86_MEM_ENCRYPT
 void __init mem_encrypt_init(void);
diff --git a/arch/x86/include/asm/sev.h b/arch/x86/include/asm/sev.h
index 5b4a1ce3d368..8dad8b1613bf 100644
--- a/arch/x86/include/asm/sev.h
+++ b/arch/x86/include/asm/sev.h
@@ -13,7 +13,6 @@
 
 #include <asm/insn.h>
 #include <asm/sev-common.h>
-#include <asm/bootparam.h>
 #include <asm/coco.h>
 
 #define GHCB_PROTOCOL_MIN	1ULL
@@ -22,6 +21,8 @@
 
 #define	VMGEXIT()			{ asm volatile("rep; vmmcall\n\r"); }
 
+struct boot_params;
+
 enum es_result {
 	ES_OK,			/* All good */
 	ES_UNSUPPORTED,		/* Requested operation not supported */
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index c878616a18b8..f062715578a0 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -2,8 +2,6 @@
 #ifndef _ASM_X86_PLATFORM_H
 #define _ASM_X86_PLATFORM_H
 
-#include <asm/bootparam.h>
-
 struct ghcb;
 struct mpc_bus;
 struct mpc_cpu;
-- 
2.43.0