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Date:   Thu, 21 Apr 2022 00:44:18 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Arnd Bergmann <arnd@arndb.de>
Cc:     Christoph Hellwig <hch@infradead.org>,
        Ard Biesheuvel <ardb@kernel.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Linux Memory Management List <linux-mm@kvack.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH 07/10] crypto: Use ARCH_DMA_MINALIGN instead of
 ARCH_KMALLOC_MINALIGN
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On Thu, Apr 21, 2022 at 09:36:46AM +0200, Arnd Bergmann wrote:
> Does this work on all 32-bit architectures as well? I see that you added
> swiotlb for ARM LPASE systems in 2019, but I don't know if that has any
> additional requirements for the other 32-bit architectures that don't
> select SWIOTLB today.

We'll need to call swiotlb_init for all these cases, but there is no other
fundamental requirement.  We can probably do with a way smaller buffer
if bouncing is only needed for misaligned allocations.