[PATCH v8 0/4] Initial BBML2 support for contpte_convert()

[Catalin Marinas]

On Wed, 25 Jun 2025 11:34:31 +0000, Mikołaj Lenczewski wrote:
> This patch series extends the cpufeature framework to add support for
> easily matching against all early cpus, and builds on this to add initial
> support for eliding Break-Before-Make requirements on systems that support
> BBML2 and additionally guarantee to never raise a conflict abort.
> 
> This support conceptually reorders and then elides both a TLB invalidation
> and a DSB in contpte_convert(), when BBML2 is supported. This leads to
> a 12% improvement when executing a microbenchmark designed to force the
> pathological path where contpte_convert() gets called. This represents
> an 80% reduction in the cost of calling contpte_convert().
> 
> [...]

Applied to arm64 (for-next/user-contig-bbml2), thanks!

[1/4] arm64: cpufeature: Introduce MATCH_ALL_EARLY_CPUS capability type
      https://git.kernel.org/arm64/c/3eb06f6ce3af
[2/4] arm64: Add BBM Level 2 cpu feature
      https://git.kernel.org/arm64/c/5aa4b625762e
[3/4] iommu/arm: Add BBM Level 2 smmu feature
      https://git.kernel.org/arm64/c/212c439bdd8f
[4/4] arm64/mm: Elide tlbi in contpte_convert() under BBML2
      https://git.kernel.org/arm64/c/83bbd6be7d17

-- 
Catalin