From: Ryan Roberts <ryan.roberts@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Helge Deller <deller@gmx.de>, Nicholas Piggin <npiggin@gmail.com>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
"David S. Miller" <davem@davemloft.net>,
Arnd Bergmann <arnd@arndb.de>,
Mike Kravetz <mike.kravetz@oracle.com>,
Muchun Song <muchun.song@linux.dev>,
SeongJae Park <sj@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Uladzislau Rezki <urezki@gmail.com>,
Christoph Hellwig <hch@infradead.org>,
Lorenzo Stoakes <lstoakes@gmail.com>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Peter Xu <peterx@redhat.com>,
Axel Rasmussen <axelrasmussen@google.com>,
Qi Zheng <zhengqi.arch@bytedance.com>
Cc: linux-s390@vger.kernel.org, Ryan Roberts <ryan.roberts@arm.com>,
linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org, linux-mm@kvack.org,
sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v1 5/8] sparc: hugetlb: Convert set_huge_pte_at() to take vma
Date: Thu, 21 Sep 2023 17:20:04 +0100 [thread overview]
Message-ID: <20230921162007.1630149-6-ryan.roberts@arm.com> (raw)
In-Reply-To: <20230921162007.1630149-1-ryan.roberts@arm.com>
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 sparc 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/sparc/include/asm/hugetlb.h | 8 +++++---
arch/sparc/mm/hugetlbpage.c | 8 +++++++-
2 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index 0a26cca24232..14a71b735bb8 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -13,7 +13,9 @@ extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
#endif
#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);
+void __set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte);
#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
@@ -32,7 +34,7 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
unsigned long addr, pte_t *ptep)
{
pte_t old_pte = *ptep;
- set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
+ __set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
}
#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
@@ -42,7 +44,7 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
{
int changed = !pte_same(*ptep, pte);
if (changed) {
- set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
+ __set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
flush_tlb_page(vma, addr);
}
return changed;
diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c
index d7018823206c..05267b72103f 100644
--- a/arch/sparc/mm/hugetlbpage.c
+++ b/arch/sparc/mm/hugetlbpage.c
@@ -328,7 +328,7 @@ pte_t *huge_pte_offset(struct mm_struct *mm,
return pte_offset_huge(pmd, addr);
}
-void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
+void __set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t entry)
{
unsigned int nptes, orig_shift, shift;
@@ -364,6 +364,12 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
orig_shift);
}
+void set_huge_pte_at(struct vm_area_struct *vma, unsigned long addr,
+ pte_t *ptep, pte_t entry)
+{
+ __set_huge_pte_at(vma->vm_mm, addr, ptep, entry);
+}
+
pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
pte_t *ptep)
{
--
2.25.1
next prev parent reply other threads:[~2023-09-22 8:00 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-21 16:19 [PATCH v1 0/8] Fix set_huge_pte_at() panic on arm64 Ryan Roberts
2023-09-21 16:20 ` [PATCH v1 1/8] parisc: hugetlb: Convert set_huge_pte_at() to take vma Ryan Roberts
2023-09-21 16:20 ` [PATCH v1 2/8] powerpc: " Ryan Roberts
2023-09-21 18:43 ` Christophe Leroy
2023-09-22 6:44 ` Christophe Leroy
2023-09-22 7:19 ` Ryan Roberts
2023-09-22 6:56 ` Christophe Leroy
2023-09-22 7:33 ` Ryan Roberts
2023-09-22 8:10 ` Christophe Leroy
2023-09-22 8:41 ` Ryan Roberts
2023-09-22 9:14 ` Christophe Leroy
2023-09-22 9:37 ` Ryan Roberts
2023-09-21 16:20 ` [PATCH v1 3/8] riscv: " Ryan Roberts
2023-09-22 7:54 ` Alexandre Ghiti
2023-09-22 8:36 ` Ryan Roberts
2023-09-21 16:20 ` [PATCH v1 4/8] s390: " Ryan Roberts
2023-09-21 16:20 ` Ryan Roberts [this message]
2023-09-21 16:20 ` [PATCH v1 6/8] mm: " Ryan Roberts
2023-09-22 1:37 ` SeongJae Park
2023-09-21 16:20 ` [PATCH v1 7/8] arm64: " Ryan Roberts
2023-09-21 16:20 ` [PATCH v1 8/8] arm64: hugetlb: Fix set_huge_pte_at() to work with all swap entries Ryan Roberts
2023-09-22 2:54 ` Qi Zheng
2023-09-22 7:40 ` Ryan Roberts
2023-09-22 7:54 ` Qi Zheng
2023-09-22 9:35 ` Ryan Roberts
2023-09-22 9:58 ` Qi Zheng
2023-09-21 16:30 ` [PATCH v1 0/8] Fix set_huge_pte_at() panic on arm64 Andrew Morton
2023-09-21 16:35 ` Ryan Roberts
2023-09-21 17:38 ` Catalin Marinas
2023-09-22 7:41 ` Ryan Roberts
2023-09-22 9:23 ` Greg Kroah-Hartman
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