From: Christoph Hellwig <hch@infradead.org>
To: Robin Murphy <robin.murphy@arm.com>
Cc: parri.andrea@gmail.com, michael.h.kelley@microsoft.com,
wei.liu@kernel.org, Andi Kleen <ak@linux.intel.com>,
Tianyu Lan <Tianyu.Lan@microsoft.com>,
thomas.lendacky@amd.com, konrad.wilk@oracle.com,
linux-hyperv@vger.kernel.org, Tianyu Lan <ltykernel@gmail.com>,
linux-kernel@vger.kernel.org, hch@infradead.org,
iommu@lists.linux-foundation.org, andi.kleen@intel.com,
brijesh.singh@amd.com, vkuznets@redhat.com, kys@microsoft.com,
kirill.shutemov@intel.com, hch@lst.de
Subject: Re: [RFC PATCH 1/2] swiotlb: Split up single swiotlb lock
Date: Thu, 28 Apr 2022 07:45:48 -0700 [thread overview]
Message-ID: <YmqonHKBT8ftYHgY@infradead.org> (raw)
In-Reply-To: <e7b644f0-6c90-fe99-792d-75c38505dc54@arm.com>
On Thu, Apr 28, 2022 at 03:44:36PM +0100, Robin Murphy wrote:
> Rather than introduce this extra level of allocator complexity, how about
> just dividing up the initial SWIOTLB allocation into multiple io_tlb_mem
> instances?
Yeah. We're almost done removing all knowledge of swiotlb from drivers,
so the very last thing I want is an interface that allows a driver to
allocate a per-device buffer.
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next prev parent reply other threads:[~2022-04-28 14:46 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-28 14:14 [RFC PATCH 0/2] swiotlb: Introduce swiotlb device allocation function Tianyu Lan
2022-04-28 14:14 ` [RFC PATCH 1/2] swiotlb: Split up single swiotlb lock Tianyu Lan
2022-04-28 14:44 ` Robin Murphy
2022-04-28 14:45 ` Christoph Hellwig [this message]
2022-04-28 14:55 ` Andi Kleen
2022-04-28 15:05 ` Christoph Hellwig
2022-04-28 15:16 ` Andi Kleen
2022-04-28 15:07 ` Robin Murphy
2022-04-28 16:02 ` Andi Kleen
2022-04-28 16:59 ` Robin Murphy
2022-04-28 14:56 ` Robin Murphy
2022-04-28 15:54 ` Tianyu Lan
2022-04-29 14:21 ` [RFC PATCH] swiotlb: Add Child IO TLB mem support Tianyu Lan
2022-04-29 14:25 ` Tianyu Lan
2022-04-28 14:14 ` [RFC PATCH 2/2] Swiotlb: Add device bounce buffer allocation interface Tianyu Lan
2022-04-28 15:50 ` Tianyu Lan
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