From: David Daney <ddaney@caviumnetworks.com>
Date: Wed, 27 Apr 2011 23:39:28 +0000 (-0700)
Subject: MIPS: Invalidate old TLB mappings when updating huge page PTEs.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=310f1303390758ee7688e350e117a7b50ba5fa05;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

MIPS: Invalidate old TLB mappings when updating huge page PTEs.

Without this, stale Icache or TLB entries may be used.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
https://patchwork.linux-mips.org/patch/2318/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index f5e856015329..c565b7c3f0b5 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -70,6 +70,7 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
 {
+	flush_tlb_mm(vma->vm_mm);
 }
 
 static inline int huge_pte_none(pte_t pte)