From 5e23698f44cd158656babbbcea75d3ec1dbf9a0f Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven <geert@linux-m68k.org> Date: Mon, 12 Apr 2004 17:31:58 -0700 Subject: [PATCH] [PATCH] M68k TLB fixes M68k TLB fixes from Roman Zippel: - Check current->active_mm for currently active mm - Set correct context to flush the right ATC entry This is especially important for kswapd to correctly flush unmapped entries (it caused random segfaults during large compiles) --- include/asm-m68k/tlbflush.h | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/include/asm-m68k/tlbflush.h b/include/asm-m68k/tlbflush.h index 03a85d3bd7f4..498f090dcb4b 100644 --- a/include/asm-m68k/tlbflush.h +++ b/include/asm-m68k/tlbflush.h @@ -65,20 +65,24 @@ static inline void flush_tlb_all(void) static inline void flush_tlb_mm(struct mm_struct *mm) { - if (mm == current->mm) + if (mm == current->active_mm) __flush_tlb(); } static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr) { - if (vma->vm_mm == current->mm) + if (vma->vm_mm == current->active_mm) { + mm_segment_t old_fs = get_fs(); + set_fs(USER_DS); __flush_tlb_one(addr); + set_fs(old_fs); + } } static inline void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) { - if (vma->vm_mm == current->mm) + if (vma->vm_mm == current->active_mm) __flush_tlb(); } -- 2.30.9