Re: [PATCH V14 1/6] mm: softdirty: Add pgtable_supports_soft_dirty()
From: David Hildenbrand <hidden>
Date: 2025-09-18 09:03:09
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linux-fsdevel, linux-mm, linux-riscv, lkml
On 18.09.25 10:37, Chunyan Zhang wrote:
Some platforms can customize the PTE PMD entry soft-dirty bit making it unavailable even if the architecture provides the resource. Add an API which architectures can define their specific implementations to detect if soft-dirty bit is available on which device the kernel is running. This patch is removing "ifdef CONFIG_MEM_SOFT_DIRTY" in favor of pgtable_supports_soft_dirty() checks that defaults to IS_ENABLED(CONFIG_MEM_SOFT_DIRTY), if not overridden by the architecture, no change in behavior is expected. We make sure to never set VM_SOFTDIRTY if !pgtable_supports_soft_dirty(), so we will never run into VM_SOFTDIRTY checks. Acked-by: David Hildenbrand <redacted> Signed-off-by: Chunyan Zhang <redacted> ---
[...]
quoted hunk ↗ jump to hunk
mas_store_fail:diff --git a/mm/vma_exec.c b/mm/vma_exec.c index 922ee51747a6..a822fb73f4e2 100644 --- a/mm/vma_exec.c +++ b/mm/vma_exec.c@@ -107,6 +107,7 @@ int relocate_vma_down(struct vm_area_struct *vma, unsigned long shift) int create_init_stack_vma(struct mm_struct *mm, struct vm_area_struct **vmap, unsigned long *top_mem_p) { + unsigned long flags = VM_STACK_FLAGS | VM_STACK_INCOMPLETE_SETUP;
No need to resend because of this (probably can be fixed up when applying): there is a double space before the "=" -- Cheers David / dhildenb