Re: [PATCH v4 1/5] dma: swiotlb: Centralize default pool policy selection

[sashiko-bot@kernel.org]

> The addressing_limited argument to swiotlb_init() describes only one
> reason for allocating a default SWIOTLB pool. A pool may also be needed
> for memory encryption, unaligned kmalloc bouncing, or swiotlb=force.
> 
> Replace the boolean argument with the SWIOTLB_INIT_ADDRESSING_LIMIT flag
> and have architectures report their DMA addressing constraints through
> the initialization flags.
> 
> Introduce SWIOTLB pool policies and select the policy in the core before
> allocating the default pool. This separates the decision to allocate a
> pool from the policy used to size it, allowing subsequent changes to
> centralize minimal and confidential-guest sizing.
> 
> Set the shared-pool state before memory attributes are updated. Also move
> the pseries secure-guest setup before swiotlb_init() so its initialization
> flags are available when the policy is selected.
> 
> Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.dev/#/patchset/20260914070135.313337-1-aneesh.kumar@kernel.org?part=1