From: sashiko-bot@kernel.org
To: "Aneesh Kumar K.V (Arm)" <aneesh.kumar@kernel.org>
Cc: linux-s390@vger.kernel.org, "Vasily Gorbik" <gor@linux.ibm.com>,
"Alexander Gordeev" <agordeev@linux.ibm.com>,
"Heiko Carstens" <hca@linux.ibm.com>
Subject: Re: [PATCH] arm64: swiotlb: Keep the default size for protected guests
Date: Fri, 07 Aug 2026 09:35:01 +0000 [thread overview]
Message-ID: <20260807093502.5479C1F00A3A@smtp.kernel.org> (raw)
In-Reply-To: <20260807092612.2202005-1-aneesh.kumar@kernel.org>
> Realm guests and protected KVM guests may require swiotlb for device DMA
> even when all system RAM is addressable by the DMA zones.
>
> Do not reduce the SWIOTLB buffer to the kmalloc-bouncing size for these
> guests, as the reduced number of slots can be exhausted during CCA guest
> operation.
>
> Fixes: 30c5e45ee2c5 ("dma-direct: make dma_direct_map_phys() honor DMA_ATTR_CC_SHARED")
> Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260807092612.2202005-1-aneesh.kumar@kernel.org?part=1
next prev parent reply other threads:[~2026-08-07 9:35 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-17 18:04 [PATCH v8 00/23] dma-mapping: Track shared DMA state through direct, pool and swiotlb paths Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 01/23] dma-direct: return struct page from dma_direct_alloc_from_pool() Aneesh Kumar K.V (Arm)
2026-07-21 11:54 ` Leon Romanovsky
2026-07-21 14:20 ` Aneesh Kumar K.V
2026-07-21 14:29 ` Leon Romanovsky
2026-07-21 15:10 ` Aneesh Kumar K.V
2026-07-21 15:33 ` Leon Romanovsky
2026-07-22 19:59 ` Jason Gunthorpe
2026-07-23 7:57 ` Leon Romanovsky
2026-07-25 14:34 ` Jason Gunthorpe
2026-07-26 8:17 ` Leon Romanovsky
2026-07-27 4:23 ` Jason Gunthorpe
2026-07-27 11:40 ` Leon Romanovsky
2026-07-28 12:31 ` Aneesh Kumar K.V
2026-07-28 14:24 ` Mostafa Saleh
2026-07-17 18:04 ` [PATCH v8 02/23] dma-pool: fix page leak in atomic_pool_expand() cleanup Aneesh Kumar K.V (Arm)
2026-07-21 12:31 ` Leon Romanovsky
2026-07-21 14:41 ` Aneesh Kumar K.V
2026-07-21 15:34 ` Leon Romanovsky
2026-07-17 18:04 ` [PATCH v8 03/23] iommu/dma: Check atomic pool allocation result directly Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 04/23] dma: free atomic pool pages by physical address Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 05/23] swiotlb: Preserve allocation virtual address for dynamic pools Aneesh Kumar K.V (Arm)
2026-07-28 14:25 ` Mostafa Saleh
2026-07-17 18:04 ` [PATCH v8 06/23] s390: Expose protected virtualization through cc_platform_has() Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 07/23] dma-direct: swiotlb: handle swiotlb alloc/free outside __dma_direct_alloc_pages Aneesh Kumar K.V (Arm)
2026-07-28 14:26 ` Mostafa Saleh
2026-07-17 18:04 ` [PATCH v8 08/23] coco: arm64: s390: powerpc: Mark secure guests with CC_ATTR_GUEST_MEM_ENCRYPT Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 09/23] dma-mapping: Add internal shared allocation attribute Aneesh Kumar K.V (Arm)
2026-07-28 14:25 ` Mostafa Saleh
2026-07-17 18:04 ` [PATCH v8 10/23] dma-direct: use __DMA_ATTR_ALLOC_CC_SHARED in alloc/free paths Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 11/23] dma-pool: track decrypted atomic pools and select them via attrs Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 12/23] dma: swiotlb: pass mapping attributes by reference Aneesh Kumar K.V (Arm)
2026-07-28 14:41 ` Mostafa Saleh
2026-07-29 9:05 ` Aneesh Kumar K.V
2026-07-29 10:08 ` Mostafa Saleh
2026-07-29 12:42 ` Aneesh Kumar K.V
2026-08-04 14:20 ` Jason Gunthorpe
2026-08-05 9:10 ` Mostafa Saleh
2026-08-05 12:30 ` Jason Gunthorpe
2026-08-07 11:03 ` Robin Murphy
2026-08-07 11:55 ` Jason Gunthorpe
2026-08-07 15:54 ` Robin Murphy
2026-08-07 17:01 ` Jason Gunthorpe
2026-07-17 18:04 ` [PATCH v8 13/23] dma: swiotlb: track pool encryption state and honor DMA_ATTR_CC_SHARED Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 14/23] dma-mapping: make dma_pgprot() honor __DMA_ATTR_ALLOC_CC_SHARED Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 15/23] dma-direct: pass attrs to dma_capable() for DMA_ATTR_CC_SHARED checks Aneesh Kumar K.V (Arm)
2026-07-28 14:30 ` Mostafa Saleh
2026-07-29 9:09 ` Aneesh Kumar K.V
2026-07-30 21:05 ` Jason Gunthorpe
2026-07-17 18:04 ` [PATCH v8 16/23] dma-direct: Move dma_direct_map_phys() to dma/direct.c Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 17/23] dma-direct: make dma_direct_map_phys() honor DMA_ATTR_CC_SHARED Aneesh Kumar K.V (Arm)
2026-08-07 9:26 ` [PATCH] arm64: swiotlb: Keep the default size for protected guests Aneesh Kumar K.V (Arm)
2026-08-07 9:35 ` sashiko-bot [this message]
2026-08-07 11:58 ` Will Deacon
2026-08-07 13:03 ` Aneesh Kumar K.V
2026-08-07 13:18 ` Will Deacon
2026-08-07 13:58 ` Jason Gunthorpe
2026-08-07 15:34 ` Mostafa Saleh
2026-08-07 16:47 ` Jason Gunthorpe
2026-08-07 18:13 ` Mostafa Saleh
2026-08-07 18:20 ` Jason Gunthorpe
2026-08-07 18:00 ` Aneesh Kumar K.V
2026-08-07 17:59 ` Aneesh Kumar K.V
2026-07-17 18:04 ` [PATCH v8 18/23] dma-direct: set decrypted flag for remapped DMA allocations Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 19/23] dma-direct: select DMA address encoding from __DMA_ATTR_ALLOC_CC_SHARED Aneesh Kumar K.V (Arm)
2026-07-28 14:31 ` Mostafa Saleh
2026-07-17 18:04 ` [PATCH v8 20/23] dma-direct: rename ret to cpu_addr in alloc helpers Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 21/23] dma: swiotlb: free dynamic pools from process context Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 22/23] dma: swiotlb: handle set_memory_decrypted() failures Aneesh Kumar K.V (Arm)
2026-07-17 18:04 ` [PATCH v8 23/23] swiotlb: remove unused SWIOTLB_FORCE flag Aneesh Kumar K.V (Arm)
2026-07-21 12:40 ` [PATCH v8 00/23] dma-mapping: Track shared DMA state through direct, pool and swiotlb paths Leon Romanovsky
2026-07-22 19:57 ` Jason Gunthorpe
2026-07-23 7:51 ` Leon Romanovsky
2026-07-25 14:32 ` Jason Gunthorpe
2026-07-25 7:09 ` Aneesh Kumar K.V
2026-07-31 7:33 ` Marek Szyprowski
2026-08-07 9:21 ` Aneesh Kumar K.V
2026-08-07 9:51 ` Mostafa Saleh
2026-08-07 10:04 ` Marek Szyprowski
2026-07-28 14:22 ` Mostafa Saleh
2026-07-29 9:12 ` Aneesh Kumar K.V
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260807093502.5479C1F00A3A@smtp.kernel.org \
--to=sashiko-bot@kernel.org \
--cc=agordeev@linux.ibm.com \
--cc=aneesh.kumar@kernel.org \
--cc=gor@linux.ibm.com \
--cc=hca@linux.ibm.com \
--cc=linux-s390@vger.kernel.org \
--cc=sashiko-reviews@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox