linux-kernel - [PATCH] arm64: Remove assertion on CONFIG_VMAP

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Message-Id: <20251103152345.175463-1-dawei.li@linux.dev>
Date: Mon,  3 Nov 2025 23:23:45 +0800
From: Dawei Li <dawei.li@...ux.dev>
To: catalin.marinas@....com,
	will@...nel.org
Cc: mark.rutland@....com,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	dawei.li@...ux.dev,
	set_pte_at@...look.com
Subject: [PATCH] arm64: Remove assertion on CONFIG_VMAP_STACK

CONFIG_VMAP_STACK is selected by arm64 arch unconditionly since commit
ef6861b8e6dd ("arm64: Mandate VMAP_STACK").

Remove the redundant assertion and headers.

Signed-off-by: Dawei Li <dawei.li@...ux.dev>
---
 arch/arm64/include/asm/vmap_stack.h | 4 ----
 arch/arm64/kernel/sdei.c            | 4 ----
 2 files changed, 8 deletions(-)

diff --git a/arch/arm64/include/asm/vmap_stack.h b/arch/arm64/include/asm/vmap_stack.h
index 20873099c035..75daee1a07e9 100644
--- a/arch/arm64/include/asm/vmap_stack.h
+++ b/arch/arm64/include/asm/vmap_stack.h
@@ -3,9 +3,7 @@
 #ifndef __ASM_VMAP_STACK_H
 #define __ASM_VMAP_STACK_H
 
-#include <linux/bug.h>
 #include <linux/gfp.h>
-#include <linux/kconfig.h>
 #include <linux/vmalloc.h>
 #include <linux/pgtable.h>
 #include <asm/memory.h>
@@ -19,8 +17,6 @@ static inline unsigned long *arch_alloc_vmap_stack(size_t stack_size, int node)
 {
 	void *p;
 
-	BUILD_BUG_ON(!IS_ENABLED(CONFIG_VMAP_STACK));
-
 	p = __vmalloc_node(stack_size, THREAD_ALIGN, THREADINFO_GFP, node,
 			__builtin_return_address(0));
 	return kasan_reset_tag(p);
diff --git a/arch/arm64/kernel/sdei.c b/arch/arm64/kernel/sdei.c
index 95169f7b6531..213ac72ce4fd 100644
--- a/arch/arm64/kernel/sdei.c
+++ b/arch/arm64/kernel/sdei.c
@@ -63,8 +63,6 @@ static void free_sdei_stacks(void)
 {
 	int cpu;
 
-	BUILD_BUG_ON(!IS_ENABLED(CONFIG_VMAP_STACK));
-
 	for_each_possible_cpu(cpu) {
 		_free_sdei_stack(&sdei_stack_normal_ptr, cpu);
 		_free_sdei_stack(&sdei_stack_critical_ptr, cpu);
@@ -88,8 +86,6 @@ static int init_sdei_stacks(void)
 	int cpu;
 	int err = 0;
 
-	BUILD_BUG_ON(!IS_ENABLED(CONFIG_VMAP_STACK));
-
 	for_each_possible_cpu(cpu) {
 		err = _init_sdei_stack(&sdei_stack_normal_ptr, cpu);
 		if (err)
-- 
2.25.1