Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) client-ip=2620:137:e000::3:7;
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:     Ryan Roberts <ryan.roberts@arm.com>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
        linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
        sparclinux@vger.kernel.org, linux-mm@kvack.org,
        stable@vger.kernel.org
Subject: [PATCH v1 3/8] riscv: hugetlb: Convert set_huge_pte_at() to take vma
Date:   Thu, 21 Sep 2023 17:20:02 +0100
Message-Id: <20230921162007.1630149-4-ryan.roberts@arm.com>
In-Reply-To: <20230921162007.1630149-1-ryan.roberts@arm.com>
References: <20230921162007.1630149-1-ryan.roberts@arm.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

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 riscv 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/riscv/include/asm/hugetlb.h | 2 +-
 arch/riscv/mm/hugetlbpage.c      | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/include/asm/hugetlb.h b/arch/riscv/include/asm/hugetlb.h
index 34e24f078cc1..be1ac8582bc2 100644
--- a/arch/riscv/include/asm/hugetlb.h
+++ b/arch/riscv/include/asm/hugetlb.h
@@ -17,7 +17,7 @@ void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
 		    pte_t *ptep, unsigned long sz);
 
 #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
-void set_huge_pte_at(struct mm_struct *mm,
+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/riscv/mm/hugetlbpage.c b/arch/riscv/mm/hugetlbpage.c
index 96225a8533ad..7cdbf0960772 100644
--- a/arch/riscv/mm/hugetlbpage.c
+++ b/arch/riscv/mm/hugetlbpage.c
@@ -177,11 +177,12 @@ pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags)
 	return entry;
 }
 
-void set_huge_pte_at(struct mm_struct *mm,
+void set_huge_pte_at(struct vm_area_struct *vma,
 		     unsigned long addr,
 		     pte_t *ptep,
 		     pte_t pte)
 {
+	struct mm_struct *mm = vma->vm_mm;
 	int i, pte_num;
 
 	if (!pte_napot(pte)) {
-- 
2.25.1