* [RFC PATCH 15/18] mm/pgtable: pass ptdesc to pmd_populate
[not found] ` <20240730072719.3715016-1-alexs@kernel.org>
@ 2024-07-30 7:27 ` alexs
0 siblings, 0 replies; only message in thread
From: alexs @ 2024-07-30 7:27 UTC (permalink / raw)
To: Will Deacon, Aneesh Kumar K . V, Nick Piggin, Peter Zijlstra,
Russell King, Catalin Marinas, Brian Cain, WANG Xuerui,
Geert Uytterhoeven, Jonas Bonn, Stefan Kristiansson,
Stafford Horne, Michael Ellerman, Naveen N Rao, Paul Walmsley,
Albert Ou, Thomas Gleixner, Borislav Petkov, Dave Hansen, x86,
H . Peter Anvin, Andy Lutomirski, Bibo Mao, Baolin Wang,
linux-arch, linux-mm, linux-arm-kernel, linux-kernel, linux-csky,
linux-hexagon, loongarch, linux-m68k, linux-openrisc,
linuxppc-dev, linux-riscv, Heiko Carstens, Vasily Gorbik,
Christian Borntraeger, Sven Schnelle, Qi Zheng, Vishal Moola,
Aneesh Kumar K . V, Kemeng Shi, Lance Yang, Peter Xu, Barry Song,
linux-s390
Cc: Guo Ren, Christophe Leroy, Palmer Dabbelt, Mike Rapoport,
Oscar Salvador, Alexandre Ghiti, Jisheng Zhang, Samuel Holland,
Anup Patel, Josh Poimboeuf, Breno Leitao, Alexander Gordeev,
Gerald Schaefer, Hugh Dickins, David Hildenbrand, Ryan Roberts,
Matthew Wilcox, Alex Shi, Naveen N . Rao, linux-parisc,
linux-snps-arc, linux-alpha, Helge Deller,
James E . J . Bottomley, Sam Creasey, Huacai Chen, Vineet Gupta,
Matt Turner, Ivan Kokshaysky, Richard Henderson, Ard Biesheuvel
From: Alex Shi <alexs@kernel.org>
Pass struct ptdesc to pmd_populate to further replace pgtable_t.
We use type casting instead of page_ptdesc() helper since different arch
has different type of pgtable_t.
Helper ptdesc_pfn used for arch openrisc and hexagon.
Signed-off-by: Alex Shi <alexs@kernel.org>
Cc: linux-mm@kvack.org
Cc: linux-parisc@vger.kernel.org
Cc: linux-openrisc@vger.kernel.org
Cc: linux-m68k@lists.linux-m68k.org
Cc: loongarch@lists.linux.dev
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-alpha@vger.kernel.org
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: x86@kernel.org
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Helge Deller <deller@gmx.de>
Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Sam Creasey <sammy@sammy.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Breno Leitao <leitao@debian.org>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Bibo Mao <maobibo@loongson.cn>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Vishal Moola <vishal.moola@gmail.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
---
arch/alpha/include/asm/pgalloc.h | 4 ++--
arch/arc/include/asm/pgalloc.h | 4 ++--
arch/arm/include/asm/pgalloc.h | 4 ++--
arch/arm64/include/asm/pgalloc.h | 4 ++--
arch/hexagon/include/asm/pgalloc.h | 4 ++--
arch/loongarch/include/asm/pgalloc.h | 4 ++--
arch/m68k/include/asm/motorola_pgalloc.h | 4 ++--
arch/m68k/include/asm/sun3_pgalloc.h | 4 ++--
arch/microblaze/include/asm/pgalloc.h | 2 +-
arch/mips/include/asm/pgalloc.h | 4 ++--
arch/nios2/include/asm/pgalloc.h | 4 ++--
arch/openrisc/include/asm/pgalloc.h | 4 ++--
arch/parisc/include/asm/pgalloc.h | 2 +-
arch/powerpc/include/asm/book3s/32/pgalloc.h | 2 +-
arch/sh/include/asm/pgalloc.h | 4 ++--
arch/sparc/include/asm/pgalloc_32.h | 2 +-
arch/x86/include/asm/pgalloc.h | 4 ++--
mm/debug_vm_pgtable.c | 2 +-
mm/huge_memory.c | 8 ++++----
mm/khugepaged.c | 4 ++--
mm/memory.c | 2 +-
mm/mremap.c | 2 +-
22 files changed, 39 insertions(+), 39 deletions(-)
diff --git a/arch/alpha/include/asm/pgalloc.h b/arch/alpha/include/asm/pgalloc.h
index 68be7adbfe58..ad62056059ac 100644
--- a/arch/alpha/include/asm/pgalloc.h
+++ b/arch/alpha/include/asm/pgalloc.h
@@ -14,9 +14,9 @@
*/
static inline void
-pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte)
+pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct ptdesc *pte)
{
- pmd_set(pmd, (pte_t *)(page_to_pa(pte) + PAGE_OFFSET));
+ pmd_set(pmd, (pte_t *)(page_to_pa(ptdesc_page(pte)) + PAGE_OFFSET));
}
static inline void
diff --git a/arch/arc/include/asm/pgalloc.h b/arch/arc/include/asm/pgalloc.h
index 096b8ef58edb..51233cfb1bad 100644
--- a/arch/arc/include/asm/pgalloc.h
+++ b/arch/arc/include/asm/pgalloc.h
@@ -46,9 +46,9 @@ pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
set_pmd(pmd, __pmd((unsigned long)pte));
}
-static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte_page)
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct ptdesc *pte)
{
- set_pmd(pmd, __pmd((unsigned long)page_address(pte_page)));
+ set_pmd(pmd, __pmd((unsigned long)ptdesc_address(pte)));
}
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h
index e8501a6c3336..37a15220fce7 100644
--- a/arch/arm/include/asm/pgalloc.h
+++ b/arch/arm/include/asm/pgalloc.h
@@ -130,7 +130,7 @@ pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
}
static inline void
-pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep)
+pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct ptdesc *ptep)
{
extern pmdval_t user_pmd_table;
pmdval_t prot;
@@ -140,7 +140,7 @@ pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep)
else
prot = _PAGE_USER_TABLE;
- __pmd_populate(pmdp, page_to_phys(ptep), prot);
+ __pmd_populate(pmdp, page_to_phys(ptdesc_page(ptep)), prot);
}
#endif /* CONFIG_MMU */
diff --git a/arch/arm64/include/asm/pgalloc.h b/arch/arm64/include/asm/pgalloc.h
index 8ff5f2a2579e..d9074b5f9dfe 100644
--- a/arch/arm64/include/asm/pgalloc.h
+++ b/arch/arm64/include/asm/pgalloc.h
@@ -131,10 +131,10 @@ pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
}
static inline void
-pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep)
+pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct ptdesc *ptep)
{
VM_BUG_ON(mm == &init_mm);
- __pmd_populate(pmdp, page_to_phys(ptep), PMD_TYPE_TABLE | PMD_TABLE_PXN);
+ __pmd_populate(pmdp, page_to_phys(ptdesc_page(ptep)), PMD_TYPE_TABLE | PMD_TABLE_PXN);
}
#endif
diff --git a/arch/hexagon/include/asm/pgalloc.h b/arch/hexagon/include/asm/pgalloc.h
index a3e082e54b74..f34e9fcad066 100644
--- a/arch/hexagon/include/asm/pgalloc.h
+++ b/arch/hexagon/include/asm/pgalloc.h
@@ -42,13 +42,13 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
- pgtable_t pte)
+ struct ptdesc *pte)
{
/*
* Conveniently, zero in 3 LSB means indirect 4K page table.
* Not so convenient when you're trying to vary the page size.
*/
- set_pmd(pmd, __pmd(((unsigned long)page_to_pfn(pte) << PAGE_SHIFT) |
+ set_pmd(pmd, __pmd(((unsigned long)ptdesc_pfn(pte) << PAGE_SHIFT) |
HEXAGON_L1_PTE_SIZE));
}
diff --git a/arch/loongarch/include/asm/pgalloc.h b/arch/loongarch/include/asm/pgalloc.h
index c96d7160babc..3461da516ab9 100644
--- a/arch/loongarch/include/asm/pgalloc.h
+++ b/arch/loongarch/include/asm/pgalloc.h
@@ -18,9 +18,9 @@ static inline void pmd_populate_kernel(struct mm_struct *mm,
set_pmd(pmd, __pmd((unsigned long)pte));
}
-static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte)
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct ptdesc *pte)
{
- set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
+ set_pmd(pmd, __pmd((unsigned long)ptdesc_address(pte)));
}
#ifndef __PAGETABLE_PMD_FOLDED
diff --git a/arch/m68k/include/asm/motorola_pgalloc.h b/arch/m68k/include/asm/motorola_pgalloc.h
index f9ee5ec4574d..a80c45b9d2a3 100644
--- a/arch/m68k/include/asm/motorola_pgalloc.h
+++ b/arch/m68k/include/asm/motorola_pgalloc.h
@@ -84,9 +84,9 @@ static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *
pmd_set(pmd, pte);
}
-static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct ptdesc *page)
{
- pmd_set(pmd, page);
+ pmd_set(pmd, ptdesc_page(page));
}
static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
diff --git a/arch/m68k/include/asm/sun3_pgalloc.h b/arch/m68k/include/asm/sun3_pgalloc.h
index 4a137eecb6fe..965f663a4797 100644
--- a/arch/m68k/include/asm/sun3_pgalloc.h
+++ b/arch/m68k/include/asm/sun3_pgalloc.h
@@ -28,9 +28,9 @@ static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *
pmd_val(*pmd) = __pa((unsigned long)pte);
}
-static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct ptdesc *ptdesc)
{
- pmd_val(*pmd) = __pa((unsigned long)page_address(page));
+ pmd_val(*pmd) = __pa((unsigned long)ptdesc_address(ptdesc));
}
/*
diff --git a/arch/microblaze/include/asm/pgalloc.h b/arch/microblaze/include/asm/pgalloc.h
index 6c33b05f730f..0f4a479e015e 100644
--- a/arch/microblaze/include/asm/pgalloc.h
+++ b/arch/microblaze/include/asm/pgalloc.h
@@ -33,7 +33,7 @@ extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte))
#define pmd_populate(mm, pmd, pte) \
- (pmd_val(*(pmd)) = (unsigned long)page_address(pte))
+ (pmd_val(*(pmd)) = (unsigned long)page_address(ptdesc_page(pte)))
#define pmd_populate_kernel(mm, pmd, pte) \
(pmd_val(*(pmd)) = (unsigned long) (pte))
diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h
index f4440edcd8fe..2ef868d93b6b 100644
--- a/arch/mips/include/asm/pgalloc.h
+++ b/arch/mips/include/asm/pgalloc.h
@@ -25,9 +25,9 @@ static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
- pgtable_t pte)
+ struct ptdesc *pte)
{
- set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
+ set_pmd(pmd, __pmd((unsigned long)ptdesc_address(pte)));
}
/*
diff --git a/arch/nios2/include/asm/pgalloc.h b/arch/nios2/include/asm/pgalloc.h
index ce6bb8e74271..420958d91a47 100644
--- a/arch/nios2/include/asm/pgalloc.h
+++ b/arch/nios2/include/asm/pgalloc.h
@@ -21,9 +21,9 @@ static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
- pgtable_t pte)
+ struct ptdesc *pte)
{
- set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
+ set_pmd(pmd, __pmd((unsigned long)ptdesc_address(pte)));
}
extern pgd_t *pgd_alloc(struct mm_struct *mm);
diff --git a/arch/openrisc/include/asm/pgalloc.h b/arch/openrisc/include/asm/pgalloc.h
index 2251d940c3d8..a9479d873dca 100644
--- a/arch/openrisc/include/asm/pgalloc.h
+++ b/arch/openrisc/include/asm/pgalloc.h
@@ -29,10 +29,10 @@ extern int mem_init_done;
set_pmd(pmd, __pmd(_KERNPG_TABLE + __pa(pte)))
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
- struct page *pte)
+ struct ptdesc *pte)
{
set_pmd(pmd, __pmd(_KERNPG_TABLE +
- ((unsigned long)page_to_pfn(pte) <<
+ ((unsigned long)ptdesc_pfn(pte) <<
(unsigned long) PAGE_SHIFT)));
}
diff --git a/arch/parisc/include/asm/pgalloc.h b/arch/parisc/include/asm/pgalloc.h
index e3e142b1c5c5..9fd06e2fef89 100644
--- a/arch/parisc/include/asm/pgalloc.h
+++ b/arch/parisc/include/asm/pgalloc.h
@@ -68,6 +68,6 @@ pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
}
#define pmd_populate(mm, pmd, pte_page) \
- pmd_populate_kernel(mm, pmd, page_address(pte_page))
+ pmd_populate_kernel(mm, pmd, page_address(ptdesc_page(pte_page)))
#endif
diff --git a/arch/powerpc/include/asm/book3s/32/pgalloc.h b/arch/powerpc/include/asm/book3s/32/pgalloc.h
index a435c84d1f9a..9971703d0566 100644
--- a/arch/powerpc/include/asm/book3s/32/pgalloc.h
+++ b/arch/powerpc/include/asm/book3s/32/pgalloc.h
@@ -32,7 +32,7 @@ static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp,
}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp,
- pgtable_t pte_page)
+ struct ptdesc *pte_page)
{
*pmdp = __pmd(__pa(pte_page) | _PMD_PRESENT);
}
diff --git a/arch/sh/include/asm/pgalloc.h b/arch/sh/include/asm/pgalloc.h
index 5d8577ab1591..095521089c20 100644
--- a/arch/sh/include/asm/pgalloc.h
+++ b/arch/sh/include/asm/pgalloc.h
@@ -27,9 +27,9 @@ static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
- pgtable_t pte)
+ struct ptdesc *pte)
{
- set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
+ set_pmd(pmd, __pmd((unsigned long)ptdesc_address(pte)));
}
#define __pte_free_tlb(tlb, pte, addr) \
diff --git a/arch/sparc/include/asm/pgalloc_32.h b/arch/sparc/include/asm/pgalloc_32.h
index addaade56f21..6f0f661a380f 100644
--- a/arch/sparc/include/asm/pgalloc_32.h
+++ b/arch/sparc/include/asm/pgalloc_32.h
@@ -50,7 +50,7 @@ static inline void free_pmd_fast(pmd_t * pmd)
#define pmd_free(mm, pmd) free_pmd_fast(pmd)
#define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd)
-#define pmd_populate(mm, pmd, pte) pmd_set(pmd, pte)
+#define pmd_populate(mm, pmd, pte) pmd_set(pmd, (pte_t *)pte)
void pmd_set(pmd_t *pmdp, pte_t *ptep);
#define pmd_populate_kernel pmd_populate
diff --git a/arch/x86/include/asm/pgalloc.h b/arch/x86/include/asm/pgalloc.h
index 06a9a5867a86..5ca8ac568768 100644
--- a/arch/x86/include/asm/pgalloc.h
+++ b/arch/x86/include/asm/pgalloc.h
@@ -76,9 +76,9 @@ static inline void pmd_populate_kernel_safe(struct mm_struct *mm,
}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
- struct page *pte)
+ struct ptdesc *pte)
{
- unsigned long pfn = page_to_pfn(pte);
+ unsigned long pfn = page_to_pfn(ptdesc_page(pte));
paravirt_alloc_pte(mm, pfn);
set_pmd(pmd, __pmd(((pteval_t)pfn << PAGE_SHIFT) | _PAGE_TABLE));
diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c
index 8550eec32aba..bf9dc9c0a9bf 100644
--- a/mm/debug_vm_pgtable.c
+++ b/mm/debug_vm_pgtable.c
@@ -645,7 +645,7 @@ static void __init pmd_populate_tests(struct pgtable_debug_args *args)
* This entry points to next level page table page.
* Hence this must not qualify as pmd_bad().
*/
- pmd_populate(args->mm, args->pmdp, args->start_ptep);
+ pmd_populate(args->mm, args->pmdp, page_ptdesc(args->start_ptep));
pmd = READ_ONCE(*args->pmdp);
WARN_ON(pmd_bad(pmd));
}
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index aac67e8a8cc8..665445706491 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2365,7 +2365,7 @@ static void __split_huge_zero_page_pmd(struct vm_area_struct *vma,
old_pmd = pmdp_huge_clear_flush(vma, haddr, pmd);
ptdesc = pgtable_trans_huge_withdraw(mm, pmd);
- pmd_populate(mm, &_pmd, ptdesc_page(ptdesc));
+ pmd_populate(mm, &_pmd, ptdesc);
pte = pte_offset_map(&_pmd, haddr);
VM_BUG_ON(!pte);
@@ -2382,7 +2382,7 @@ static void __split_huge_zero_page_pmd(struct vm_area_struct *vma,
}
pte_unmap(pte - 1);
smp_wmb(); /* make pte visible before pmd */
- pmd_populate(mm, pmd, ptdesc_page(ptdesc));
+ pmd_populate(mm, pmd, ptdesc);
}
static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
@@ -2537,7 +2537,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
* This's critical for some architectures (Power).
*/
ptdesc = pgtable_trans_huge_withdraw(mm, pmd);
- pmd_populate(mm, &_pmd, ptdesc_page(ptdesc));
+ pmd_populate(mm, &_pmd, ptdesc);
pte = pte_offset_map(&_pmd, haddr);
VM_BUG_ON(!pte);
@@ -2602,7 +2602,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
put_page(page);
smp_wmb(); /* make pte visible before pmd */
- pmd_populate(mm, pmd, ptdesc_page(ptdesc));
+ pmd_populate(mm, pmd, ptdesc);
}
void split_huge_pmd_locked(struct vm_area_struct *vma, unsigned long address,
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 48a54269472e..5b466a1c2136 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -769,7 +769,7 @@ static void __collapse_huge_page_copy_failed(pte_t *pte,
* acquiring anon_vma_lock_write is unnecessary.
*/
pmd_ptl = pmd_lock(vma->vm_mm, pmd);
- pmd_populate(vma->vm_mm, pmd, pmd_pgtable(orig_pmd));
+ pmd_populate(vma->vm_mm, pmd, (struct ptdesc *)pmd_pgtable(orig_pmd));
spin_unlock(pmd_ptl);
/*
* Release both raw and compound pages isolated
@@ -1198,7 +1198,7 @@ static int collapse_huge_page(struct mm_struct *mm, unsigned long address,
* hugepmds and never for establishing regular pmds that
* points to regular pagetables. Use pmd_populate for that
*/
- pmd_populate(mm, pmd, pmd_pgtable(_pmd));
+ pmd_populate(mm, pmd, (struct ptdesc *)pmd_pgtable(_pmd));
spin_unlock(pmd_ptl);
anon_vma_unlock_write(vma->anon_vma);
goto out_up_write;
diff --git a/mm/memory.c b/mm/memory.c
index 956cfe5f644d..cbed8824059f 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -438,7 +438,7 @@ void pmd_install(struct mm_struct *mm, pmd_t *pmd, pgtable_t *pte)
* smp_rmb() barriers in page table walking code.
*/
smp_wmb(); /* Could be smp_wmb__xxx(before|after)_spin_lock */
- pmd_populate(mm, pmd, *pte);
+ pmd_populate(mm, pmd, (struct ptdesc *)(*pte));
*pte = NULL;
}
spin_unlock(ptl);
diff --git a/mm/mremap.c b/mm/mremap.c
index e7ae140fc640..f32d35accd97 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -283,7 +283,7 @@ static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long old_addr,
VM_BUG_ON(!pmd_none(*new_pmd));
- pmd_populate(mm, new_pmd, pmd_pgtable(pmd));
+ pmd_populate(mm, new_pmd, (struct ptdesc *)pmd_pgtable(pmd));
flush_tlb_range(vma, old_addr, old_addr + PMD_SIZE);
if (new_ptl != old_ptl)
spin_unlock(new_ptl);
--
2.43.0
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2024-07-30 7:27 ` [RFC PATCH 15/18] mm/pgtable: pass ptdesc to pmd_populate alexs
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