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From: Christoph Hellwig <hch@infradead.org>
To: Robin Murphy <robin.murphy@arm.com>
Cc: Baoquan He <bhe@redhat.com>,
	Christoph Hellwig <hch@infradead.org>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org,
	rientjes@google.com, rppt@linux.ibm.com, thomas.lendacky@amd.com,
	brijesh.singh@amd.com, kexec@lists.infradead.org,
	iommu@lists.linux-foundation.org, m.szyprowski@samsung.com
Subject: Re: [PATCH RFC 0/2] dma-pool: allow user to disable atomic pool
Date: Thu, 24 Jun 2021 13:10:51 +0100	[thread overview]
Message-ID: <YNR2S02hWS2hwNiz@infradead.org> (raw)
In-Reply-To: <8b3d4e02-6e94-ad59-a480-fed8e55c009a@arm.com>

On Thu, Jun 24, 2021 at 11:47:31AM +0100, Robin Murphy wrote:
> Hmm, I think the Kconfig reshuffle has actually left a slight wrinkle here.
> For DMA_DIRECT_REMAP=y we can assume an atomic pool is always needed, since
> that was the original behaviour anyway. However the implications of
> AMD_MEM_ENCRYPT=y are different - even if support is enabled, it still
> should only be relevant if mem_encrypt_active(), so it probably does make
> sense to have an additional runtime gate on that.

Yeah, a check for that would probably be useful.

  reply	other threads:[~2021-06-24 12:11 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-24  5:20 Baoquan He
2021-06-24  5:20 ` [PATCH 1/2] docs: kernel-parameters: Update to reflect the current default size of " Baoquan He
2021-06-24  5:20 ` [PATCH 2/2] dma-pool: allow user to disable " Baoquan He
2021-06-24  7:40 ` [PATCH RFC 0/2] " Christoph Hellwig
2021-06-24  9:29   ` Baoquan He
2021-06-24 10:47     ` Robin Murphy
2021-06-24 12:10       ` Christoph Hellwig [this message]
2021-08-05  6:54       ` Baoquan He
2021-08-10 20:52         ` Tom Lendacky
2021-08-11  2:23           ` Baoquan He
2021-08-11 13:46             ` Tom Lendacky
2021-08-11  5:52           ` Christoph Hellwig

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