Re: [PATCH] arm64/mm: Optimize TLB flush in unmap_hotplug_[pmd|pud]_range()

[Will Deacon]

On Fri, 26 Jun 2026 02:28:45 +0100, Anshuman Khandual wrote:
> flush_tlb_kernel_range() could flush down an entire block mapping just with
> a single PAGE_SIZE stride. This capability was being used umapping PMD and
> PUD based block mappings in unmap_hotplug_[pmd|pud]_range().
> 
> But later on the commit 48478b9f7913
> ("arm64/mm: Enable batched TLB flush in unmap_hotplug_range()") replaced
> this PAGE_SIZE stride with [PMD|PUD]_SIZE strides, hence forcing multiple
> PAGE_SIZE stride based TLB flushes on platforms where TLB range operation
> is not supported. Revert back to the earlier TLB behaviour along with the
> required comments that were dropped earlier.
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/1] arm64/mm: Optimize TLB flush in unmap_hotplug_[pmd|pud]_range()
      https://git.kernel.org/arm64/c/ff4c5a0de1f2

Cheers,
-- 
Will

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