[PATCH v1 1/8] parisc: hugetlb: Convert set_huge_pte_at() to take vma

Ryan Roberts
2023-09-21T18:51:22Z

In order to fix a bug, arm64 needs access to the vma inside it's
implementation of set_huge_pte_at(). Provide for this by converting the
mm parameter to be a vma. Any implementations that require the mm can
access it via vma->vm_mm.

This commit makes the required parisc modifications. Separate commits
update the other arches and core code, before the actual bug is fixed in
arm64.

No behavioral changes intended.

Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
---
arch/parisc/include/asm/hugetlb.h | 2 +-
arch/parisc/mm/hugetlbpage.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index f7f078c2872c..29ba631862c5 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -5,7 +5,7 @@
#include <asm/page.h>

#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
-void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
+void set_huge_pte_at(struct vm_area_struct *vma, unsigned long addr,
pte_t *ptep, pte_t pte);

#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
diff --git a/arch/parisc/mm/hugetlbpage.c b/arch/parisc/mm/hugetlbpage.c
index a8a1a7c1e16e..fc5e1ad8e5e8 100644
--- a/arch/parisc/mm/hugetlbpage.c
+++ b/arch/parisc/mm/hugetlbpage.c
@@ -139,10 +139,10 @@ static void __set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
purge_tlb_entries_huge(mm, addr_start);
}

-void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
+void set_huge_pte_at(struct vm_area_struct *vma, unsigned long addr,
pte_t *ptep, pte_t entry)
{
- __set_huge_pte_at(mm, addr, ptep, entry);
+ __set_huge_pte_at(vma->vm_mm, addr, ptep, entry);
}

--
2.25.1