From: Ryan Roberts <ryan.roberts@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Ard Biesheuvel <ardb@kernel.org>,
Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Alexander Potapenko <glider@google.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Dmitry Vyukov <dvyukov@google.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Matthew Wilcox <willy@infradead.org>, Yu Zhao <yuzhao@google.com>,
Mark Rutland <mark.rutland@arm.com>,
David Hildenbrand <david@redhat.com>,
Kefeng Wang <wangkefeng.wang@huawei.com>,
John Hubbard <jhubbard@nvidia.com>, Zi Yan <ziy@nvidia.com>,
Barry Song <21cnbao@gmail.com>,
Alistair Popple <apopple@nvidia.com>,
Yang Shi <shy828301@gmail.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>,
linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v3 12/15] arm64/mm: Split __flush_tlb_range() to elide trailing DSB
Date: Mon, 4 Dec 2023 10:54:37 +0000 [thread overview]
Message-ID: <20231204105440.61448-13-ryan.roberts@arm.com> (raw)
In-Reply-To: <20231204105440.61448-1-ryan.roberts@arm.com>
Split __flush_tlb_range() into __flush_tlb_range_nosync() +
__flush_tlb_range(), in the same way as the existing flush_tlb_page()
arrangement. This allows calling __flush_tlb_range_nosync() to elide the
trailing DSB. Forthcoming "contpte" code will take advantage of this
when clearing the young bit from a contiguous range of ptes.
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
---
arch/arm64/include/asm/tlbflush.h | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
index bb2c2833a987..925ef3bdf9ed 100644
--- a/arch/arm64/include/asm/tlbflush.h
+++ b/arch/arm64/include/asm/tlbflush.h
@@ -399,7 +399,7 @@ do { \
#define __flush_s2_tlb_range_op(op, start, pages, stride, tlb_level) \
__flush_tlb_range_op(op, start, pages, stride, 0, tlb_level, false)
-static inline void __flush_tlb_range(struct vm_area_struct *vma,
+static inline void __flush_tlb_range_nosync(struct vm_area_struct *vma,
unsigned long start, unsigned long end,
unsigned long stride, bool last_level,
int tlb_level)
@@ -431,10 +431,19 @@ static inline void __flush_tlb_range(struct vm_area_struct *vma,
else
__flush_tlb_range_op(vae1is, start, pages, stride, asid, tlb_level, true);
- dsb(ish);
mmu_notifier_arch_invalidate_secondary_tlbs(vma->vm_mm, start, end);
}
+static inline void __flush_tlb_range(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end,
+ unsigned long stride, bool last_level,
+ int tlb_level)
+{
+ __flush_tlb_range_nosync(vma, start, end, stride,
+ last_level, tlb_level);
+ dsb(ish);
+}
+
static inline void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
--
2.25.1
next prev parent reply other threads:[~2023-12-04 10:55 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-04 10:54 [PATCH v3 00/15] Transparent Contiguous PTEs for User Mappings Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 01/15] mm: Batch-copy PTE ranges during fork() Ryan Roberts
2023-12-04 15:47 ` David Hildenbrand
2023-12-04 16:00 ` David Hildenbrand
2023-12-04 17:27 ` David Hildenbrand
2023-12-05 11:30 ` Ryan Roberts
2023-12-05 12:04 ` David Hildenbrand
2023-12-05 14:16 ` Ryan Roberts
2023-12-08 0:32 ` Alistair Popple
2023-12-12 11:51 ` Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 02/15] mm: Batch-clear PTE ranges during zap_pte_range() Ryan Roberts
2023-12-08 1:30 ` Alistair Popple
2023-12-12 11:57 ` Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 03/15] arm64/mm: set_pte(): New layer to manage contig bit Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 04/15] arm64/mm: set_ptes()/set_pte_at(): " Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 05/15] arm64/mm: pte_clear(): " Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 06/15] arm64/mm: ptep_get_and_clear(): " Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 07/15] arm64/mm: ptep_test_and_clear_young(): " Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 08/15] arm64/mm: ptep_clear_flush_young(): " Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 09/15] arm64/mm: ptep_set_wrprotect(): " Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 10/15] arm64/mm: ptep_set_access_flags(): " Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 11/15] arm64/mm: ptep_get(): " Ryan Roberts
2023-12-04 10:54 ` Ryan Roberts [this message]
2023-12-12 11:35 ` [PATCH v3 12/15] arm64/mm: Split __flush_tlb_range() to elide trailing DSB Will Deacon
2023-12-12 11:47 ` Ryan Roberts
2023-12-14 11:53 ` Ryan Roberts
2023-12-14 12:13 ` Will Deacon
2023-12-14 12:30 ` Robin Murphy
2023-12-14 14:28 ` Ryan Roberts
2023-12-14 15:22 ` Jean-Philippe Brucker
2023-12-14 16:45 ` Jonathan Cameron
2023-12-04 10:54 ` [PATCH v3 13/15] arm64/mm: Wire up PTE_CONT for user mappings Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 14/15] arm64/mm: Implement ptep_set_wrprotects() to optimize fork() Ryan Roberts
2023-12-08 1:37 ` Alistair Popple
2023-12-12 11:59 ` Ryan Roberts
2023-12-15 4:32 ` Alistair Popple
2023-12-15 14:05 ` Ryan Roberts
2023-12-04 10:54 ` [PATCH v3 15/15] arm64/mm: Implement clear_ptes() to optimize exit() Ryan Roberts
2023-12-08 1:45 ` Alistair Popple
2023-12-12 12:02 ` Ryan Roberts
2023-12-05 3:41 ` [PATCH v3 00/15] Transparent Contiguous PTEs for User Mappings John Hubbard
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