From: Alexandru Elisei <alexandru.elisei@arm.com> To: catalin.marinas@arm.com, will@kernel.org, oliver.upton@linux.dev, maz@kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, arnd@arndb.de, akpm@linux-foundation.org, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, mhiramat@kernel.org, rppt@kernel.org, hughd@google.com Cc: pcc@google.com, steven.price@arm.com, anshuman.khandual@arm.com, vincenzo.frascino@arm.com, david@redhat.com, eugenis@google.com, kcc@google.com, hyesoo.yu@samsung.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org Subject: [PATCH RFC v3 31/35] khugepaged: arm64: Don't collapse MTE enabled VMAs Date: Thu, 25 Jan 2024 16:42:52 +0000 [thread overview] Message-ID: <20240125164256.4147-32-alexandru.elisei@arm.com> (raw) In-Reply-To: <20240125164256.4147-1-alexandru.elisei@arm.com> copy_user_highpage() will do memory allocation if there are saved tags for the destination page, and the page is missing tag storage. After commit a349d72fd9ef ("mm/pgtable: add rcu_read_lock() and rcu_read_unlock()s"), collapse_huge_page() calls __collapse_huge_page_copy() -> .. -> copy_user_highpage() with the RCU lock held, which means that copy_user_highpage() can only allocate memory using GFP_ATOMIC or equivalent. Get around this by refusing to collapse pages into a transparent huge page if the VMA is MTE-enabled. Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com> --- Changes since rfc v2: * New patch. I think an agreement on whether copy*_user_highpage() should be always allowed to sleep, or should not be allowed, would be useful. arch/arm64/include/asm/pgtable.h | 3 +++ arch/arm64/kernel/mte_tag_storage.c | 5 +++++ include/linux/khugepaged.h | 5 +++++ mm/khugepaged.c | 4 ++++ 4 files changed, 17 insertions(+) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 87ae59436162..d0473538c926 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -1120,6 +1120,9 @@ static inline bool arch_alloc_cma(gfp_t gfp_mask) return true; } +bool arch_hugepage_vma_revalidate(struct vm_area_struct *vma, unsigned long address); +#define arch_hugepage_vma_revalidate arch_hugepage_vma_revalidate + #endif /* CONFIG_ARM64_MTE_TAG_STORAGE */ #endif /* CONFIG_ARM64_MTE */ diff --git a/arch/arm64/kernel/mte_tag_storage.c b/arch/arm64/kernel/mte_tag_storage.c index ac7b9c9c585c..a99959b70573 100644 --- a/arch/arm64/kernel/mte_tag_storage.c +++ b/arch/arm64/kernel/mte_tag_storage.c @@ -636,3 +636,8 @@ void arch_alloc_page(struct page *page, int order, gfp_t gfp) if (tag_storage_enabled() && alloc_requires_tag_storage(gfp)) reserve_tag_storage(page, order, gfp); } + +bool arch_hugepage_vma_revalidate(struct vm_area_struct *vma, unsigned long address) +{ + return !(vma->vm_flags & VM_MTE); +} diff --git a/include/linux/khugepaged.h b/include/linux/khugepaged.h index f68865e19b0b..461e4322dff2 100644 --- a/include/linux/khugepaged.h +++ b/include/linux/khugepaged.h @@ -38,6 +38,11 @@ static inline void khugepaged_exit(struct mm_struct *mm) if (test_bit(MMF_VM_HUGEPAGE, &mm->flags)) __khugepaged_exit(mm); } + +#ifndef arch_hugepage_vma_revalidate +#define arch_hugepage_vma_revalidate(vma, address) 1 +#endif + #else /* CONFIG_TRANSPARENT_HUGEPAGE */ static inline void khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm) { diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 2b219acb528e..cb9a9ddb4d86 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -935,6 +935,10 @@ static int hugepage_vma_revalidate(struct mm_struct *mm, unsigned long address, */ if (expect_anon && (!(*vmap)->anon_vma || !vma_is_anonymous(*vmap))) return SCAN_PAGE_ANON; + + if (!arch_hugepage_vma_revalidate(vma, address)) + return SCAN_VMA_CHECK; + return SCAN_SUCCEED; } -- 2.43.0
WARNING: multiple messages have this Message-ID (diff)
From: Alexandru Elisei <alexandru.elisei@arm.com> To: catalin.marinas@arm.com, will@kernel.org, oliver.upton@linux.dev, maz@kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, arnd@arndb.de, akpm@linux-foundation.org, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, mhiramat@kernel.org, rppt@kernel.org, hughd@google.com Cc: pcc@google.com, steven.price@arm.com, anshuman.khandual@arm.com, vincenzo.frascino@arm.com, david@redhat.com, eugenis@google.com, kcc@google.com, hyesoo.yu@samsung.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org Subject: [PATCH RFC v3 31/35] khugepaged: arm64: Don't collapse MTE enabled VMAs Date: Thu, 25 Jan 2024 16:42:52 +0000 [thread overview] Message-ID: <20240125164256.4147-32-alexandru.elisei@arm.com> (raw) In-Reply-To: <20240125164256.4147-1-alexandru.elisei@arm.com> copy_user_highpage() will do memory allocation if there are saved tags for the destination page, and the page is missing tag storage. After commit a349d72fd9ef ("mm/pgtable: add rcu_read_lock() and rcu_read_unlock()s"), collapse_huge_page() calls __collapse_huge_page_copy() -> .. -> copy_user_highpage() with the RCU lock held, which means that copy_user_highpage() can only allocate memory using GFP_ATOMIC or equivalent. Get around this by refusing to collapse pages into a transparent huge page if the VMA is MTE-enabled. Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com> --- Changes since rfc v2: * New patch. I think an agreement on whether copy*_user_highpage() should be always allowed to sleep, or should not be allowed, would be useful. arch/arm64/include/asm/pgtable.h | 3 +++ arch/arm64/kernel/mte_tag_storage.c | 5 +++++ include/linux/khugepaged.h | 5 +++++ mm/khugepaged.c | 4 ++++ 4 files changed, 17 insertions(+) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 87ae59436162..d0473538c926 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -1120,6 +1120,9 @@ static inline bool arch_alloc_cma(gfp_t gfp_mask) return true; } +bool arch_hugepage_vma_revalidate(struct vm_area_struct *vma, unsigned long address); +#define arch_hugepage_vma_revalidate arch_hugepage_vma_revalidate + #endif /* CONFIG_ARM64_MTE_TAG_STORAGE */ #endif /* CONFIG_ARM64_MTE */ diff --git a/arch/arm64/kernel/mte_tag_storage.c b/arch/arm64/kernel/mte_tag_storage.c index ac7b9c9c585c..a99959b70573 100644 --- a/arch/arm64/kernel/mte_tag_storage.c +++ b/arch/arm64/kernel/mte_tag_storage.c @@ -636,3 +636,8 @@ void arch_alloc_page(struct page *page, int order, gfp_t gfp) if (tag_storage_enabled() && alloc_requires_tag_storage(gfp)) reserve_tag_storage(page, order, gfp); } + +bool arch_hugepage_vma_revalidate(struct vm_area_struct *vma, unsigned long address) +{ + return !(vma->vm_flags & VM_MTE); +} diff --git a/include/linux/khugepaged.h b/include/linux/khugepaged.h index f68865e19b0b..461e4322dff2 100644 --- a/include/linux/khugepaged.h +++ b/include/linux/khugepaged.h @@ -38,6 +38,11 @@ static inline void khugepaged_exit(struct mm_struct *mm) if (test_bit(MMF_VM_HUGEPAGE, &mm->flags)) __khugepaged_exit(mm); } + +#ifndef arch_hugepage_vma_revalidate +#define arch_hugepage_vma_revalidate(vma, address) 1 +#endif + #else /* CONFIG_TRANSPARENT_HUGEPAGE */ static inline void khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm) { diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 2b219acb528e..cb9a9ddb4d86 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -935,6 +935,10 @@ static int hugepage_vma_revalidate(struct mm_struct *mm, unsigned long address, */ if (expect_anon && (!(*vmap)->anon_vma || !vma_is_anonymous(*vmap))) return SCAN_PAGE_ANON; + + if (!arch_hugepage_vma_revalidate(vma, address)) + return SCAN_VMA_CHECK; + return SCAN_SUCCEED; } -- 2.43.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2024-01-25 16:45 UTC|newest] Thread overview: 190+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-01-25 16:42 [PATCH RFC v3 00/35] Add support for arm64 MTE dynamic tag storage reuse Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 01/35] mm: page_alloc: Add gfp_flags parameter to arch_alloc_page() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 5:48 ` Anshuman Khandual 2024-01-29 5:48 ` Anshuman Khandual 2024-01-29 11:41 ` Alexandru Elisei 2024-01-29 11:41 ` Alexandru Elisei 2024-01-30 4:26 ` Anshuman Khandual 2024-01-30 4:26 ` Anshuman Khandual 2024-01-30 11:56 ` Alexandru Elisei 2024-01-30 11:56 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 02/35] mm: page_alloc: Add an arch hook early in free_pages_prepare() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 8:19 ` Anshuman Khandual 2024-01-29 8:19 ` Anshuman Khandual 2024-01-29 11:42 ` Alexandru Elisei 2024-01-29 11:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 03/35] mm: page_alloc: Add an arch hook to filter MIGRATE_CMA allocations Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 8:44 ` Anshuman Khandual 2024-01-29 8:44 ` Anshuman Khandual 2024-01-29 11:45 ` Alexandru Elisei 2024-01-29 11:45 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 04/35] mm: page_alloc: Partially revert "mm: page_alloc: remove stale CMA guard code" Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 9:01 ` Anshuman Khandual 2024-01-29 9:01 ` Anshuman Khandual 2024-01-29 11:46 ` Alexandru Elisei 2024-01-29 11:46 ` Alexandru Elisei 2024-01-30 4:34 ` Anshuman Khandual 2024-01-30 4:34 ` Anshuman Khandual 2024-01-30 11:57 ` Alexandru Elisei 2024-01-30 11:57 ` Alexandru Elisei 2024-01-31 3:27 ` Anshuman Khandual 2024-01-31 3:27 ` Anshuman Khandual 2024-01-25 16:42 ` [PATCH RFC v3 05/35] mm: cma: Don't append newline when generating CMA area name Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 9:13 ` Anshuman Khandual 2024-01-29 9:13 ` Anshuman Khandual 2024-01-29 11:46 ` Alexandru Elisei 2024-01-29 11:46 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 06/35] mm: cma: Make CMA_ALLOC_SUCCESS/FAIL count the number of pages Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 9:24 ` Anshuman Khandual 2024-01-29 9:24 ` Anshuman Khandual 2024-01-29 11:51 ` Alexandru Elisei 2024-01-29 11:51 ` Alexandru Elisei 2024-01-30 4:52 ` Anshuman Khandual 2024-01-30 4:52 ` Anshuman Khandual 2024-01-30 11:58 ` Alexandru Elisei 2024-01-30 11:58 ` Alexandru Elisei 2024-01-31 4:40 ` Anshuman Khandual 2024-01-31 4:40 ` Anshuman Khandual 2024-01-31 13:27 ` Alexandru Elisei 2024-01-31 13:27 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 07/35] mm: cma: Add CMA_RELEASE_{SUCCESS,FAIL} events Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 9:31 ` Anshuman Khandual 2024-01-29 9:31 ` Anshuman Khandual 2024-01-29 11:53 ` Alexandru Elisei 2024-01-29 11:53 ` Alexandru Elisei 2024-01-31 5:59 ` Anshuman Khandual 2024-01-31 5:59 ` Anshuman Khandual 2024-01-25 16:42 ` [PATCH RFC v3 08/35] mm: cma: Introduce cma_alloc_range() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-30 5:20 ` Anshuman Khandual 2024-01-30 5:20 ` Anshuman Khandual 2024-01-30 11:35 ` Alexandru Elisei 2024-01-30 11:35 ` Alexandru Elisei 2024-01-31 6:24 ` Anshuman Khandual 2024-01-31 6:24 ` Anshuman Khandual 2024-01-31 14:18 ` Alexandru Elisei 2024-01-31 14:18 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 09/35] mm: cma: Introduce cma_remove_mem() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-30 5:50 ` Anshuman Khandual 2024-01-30 5:50 ` Anshuman Khandual 2024-01-30 11:33 ` Alexandru Elisei 2024-01-30 11:33 ` Alexandru Elisei 2024-01-31 13:19 ` Anshuman Khandual 2024-01-31 13:19 ` Anshuman Khandual 2024-01-31 13:48 ` Alexandru Elisei 2024-01-31 13:48 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 10/35] mm: cma: Fast track allocating memory when the pages are free Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-30 9:18 ` Anshuman Khandual 2024-01-30 9:18 ` Anshuman Khandual 2024-01-30 11:34 ` Alexandru Elisei 2024-01-30 11:34 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 11/35] mm: Allow an arch to hook into folio allocation when VMA is known Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-26 20:00 ` Peter Collingbourne 2024-01-26 20:00 ` Peter Collingbourne 2024-01-29 11:59 ` Alexandru Elisei 2024-01-29 11:59 ` Alexandru Elisei 2024-01-30 9:55 ` Anshuman Khandual 2024-01-30 9:55 ` Anshuman Khandual 2024-01-30 11:34 ` Alexandru Elisei 2024-01-30 11:34 ` Alexandru Elisei 2024-01-31 6:53 ` Anshuman Khandual 2024-01-31 6:53 ` Anshuman Khandual 2024-01-31 12:22 ` Alexandru Elisei 2024-01-31 12:22 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 12/35] mm: Call arch_swap_prepare_to_restore() before arch_swap_restore() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-02-01 3:30 ` Anshuman Khandual 2024-02-01 3:30 ` Anshuman Khandual 2024-02-01 17:32 ` Alexandru Elisei 2024-02-01 17:32 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 13/35] mm: memory: Introduce fault-on-access mechanism for pages Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-02-01 5:52 ` Anshuman Khandual 2024-02-01 5:52 ` Anshuman Khandual 2024-02-01 17:36 ` Alexandru Elisei 2024-02-01 17:36 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 14/35] of: fdt: Return the region size in of_flat_dt_translate_address() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 15/35] of: fdt: Add of_flat_read_u32() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 16/35] KVM: arm64: Don't deny VM_PFNMAP VMAs when kvm_has_mte() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 17/35] arm64: mte: Rework naming for tag manipulation functions Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 18/35] arm64: mte: Rename __GFP_ZEROTAGS to __GFP_TAGGED Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 19/35] arm64: mte: Discover tag storage memory Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-26 8:50 ` Krzysztof Kozlowski 2024-01-26 8:50 ` Krzysztof Kozlowski 2024-01-26 17:01 ` Alexandru Elisei 2024-01-26 17:01 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 20/35] arm64: mte: Add tag storage memory to CMA Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 21/35] arm64: mte: Disable dynamic tag storage management if HW KASAN is enabled Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 22/35] arm64: mte: Enable tag storage if CMA areas have been activated Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-02-02 22:30 ` Evgenii Stepanov 2024-02-02 22:30 ` Evgenii Stepanov 2024-02-05 16:30 ` Alexandru Elisei 2024-02-05 16:30 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 23/35] arm64: mte: Try to reserve tag storage in arch_alloc_page() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-30 0:04 ` Peter Collingbourne 2024-01-30 0:04 ` Peter Collingbourne 2024-01-30 11:38 ` Alexandru Elisei 2024-01-30 11:38 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 24/35] arm64: mte: Perform CMOs for tag blocks Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 25/35] arm64: mte: Reserve tag block for the zero page Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 26/35] arm64: mte: Use fault-on-access to reserve missing tag storage Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 27/35] arm64: mte: Handle tag storage pages mapped in an MTE VMA Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 28/35] arm64: mte: swap: Handle tag restoring when missing tag storage Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-02-02 4:02 ` Peter Collingbourne 2024-02-02 4:02 ` Peter Collingbourne 2024-02-02 14:56 ` Alexandru Elisei 2024-02-02 14:56 ` Alexandru Elisei 2024-02-03 1:32 ` Evgenii Stepanov 2024-02-03 1:32 ` Evgenii Stepanov 2024-02-03 1:52 ` Peter Collingbourne 2024-02-03 1:52 ` Peter Collingbourne 2024-01-25 16:42 ` [PATCH RFC v3 29/35] arm64: mte: copypage: " Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 30/35] arm64: mte: ptrace: Handle pages with " Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-02-01 9:21 ` Anshuman Khandual 2024-02-01 9:21 ` Anshuman Khandual 2024-02-01 17:38 ` Alexandru Elisei 2024-02-01 17:38 ` Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei [this message] 2024-01-25 16:42 ` [PATCH RFC v3 31/35] khugepaged: arm64: Don't collapse MTE enabled VMAs Alexandru Elisei 2024-02-01 8:12 ` Anshuman Khandual 2024-02-01 8:12 ` Anshuman Khandual 2024-02-01 17:38 ` Alexandru Elisei 2024-02-01 17:38 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 32/35] KVM: arm64: mte: Reserve tag storage for virtual machines with MTE Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 33/35] KVM: arm64: mte: Introduce VM_MTE_KVM VMA flag Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 34/35] arm64: mte: Enable dynamic tag storage management Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 35/35] HACK! arm64: dts: Add fake tag storage to fvp-base-revc.dts Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 17:01 ` [PATCH RFC v3 00/35] Add support for arm64 MTE dynamic tag storage reuse Steven Rostedt 2024-01-25 17:01 ` Steven Rostedt
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