linux-kernel - Re: [PATCH 07/10] crypto: Use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC

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Message-ID: <YypfJQqj8PeOp8A4@google.com>
Date:   Tue, 20 Sep 2022 17:47:33 -0700
From:   Isaac Manjarres <isaacmanjarres@...gle.com>
To:     Catalin Marinas <catalin.marinas@....com>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        Ard Biesheuvel <ardb@...nel.org>,
        Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Saravana Kannan <saravanak@...gle.com>, kernel-team@...roid.com
Subject: Re: [PATCH 07/10] crypto: Use ARCH_DMA_MINALIGN instead of
 ARCH_KMALLOC_MINALIGN

On Mon, Jul 18, 2022 at 06:53:43PM +0100, Catalin Marinas wrote:
> So do I but holidays get in the way ;). I plan to refresh my kmalloc
> minalign series at the end of August.
> 
> One significant change I have though is that now ARCH_KMALLOC_MINALIGN
> now goes down all the way to 8 and using swiotlb bounce buffering if the
> DMA mapping size is small.

Hi Catalin,

This sounds like a good idea for optimizing kmalloc's memory usage
beyond what this series originally achieved. I'm sure a few other things
have come up in the meantime, but I was curious to know if you had a
chance to get back to this?

Thanks,
Isaac