From 15d1ec74b5d7054bba97e8be0b4407cd74976cbd Mon Sep 17 00:00:00 2001 From: Yosry Ahmed Date: Thu, 22 Feb 2024 19:09:11 +0000 Subject: [PATCH] x86/mm: always pass NULL as the first argument of switch_mm_irqs_off() The first argument of switch_mm_irqs_off() is unused by the x86 implementation. Make sure that x86 code never passes a non-NULL value to make this clear. Update the only non violating caller, switch_mm(). Link: https://lkml.kernel.org/r/20240222190911.1903054-2-yosryahmed@google.com Signed-off-by: Yosry Ahmed Suggested-by: Dave Hansen Acked-by: Dave Hansen Cc: Andy Lutomirski Cc: Borislav Petkov (AMD) Cc: Ingo Molnar Cc: Peter Zijlstra (Intel) Cc: Thomas Gleixner Signed-off-by: Andrew Morton --- arch/x86/mm/tlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index b67545baf6973..51f9f56941058 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -327,7 +327,7 @@ void switch_mm(struct mm_struct *prev, struct mm_struct *next, unsigned long flags; local_irq_save(flags); - switch_mm_irqs_off(prev, next, tsk); + switch_mm_irqs_off(NULL, next, tsk); local_irq_restore(flags); }