From: Jason Gunthorpe <jgg@ziepe.ca>
To: "Aneesh Kumar K.V (Arm)" <aneesh.kumar@kernel.org>
Cc: iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev,
Robin Murphy <robin.murphy@arm.com>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
Steven Price <steven.price@arm.com>,
Suzuki K Poulose <Suzuki.Poulose@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Jiri Pirko <jiri@resnulli.us>,
Mostafa Saleh <smostafa@google.com>,
Petr Tesarik <ptesarik@suse.com>,
Alexey Kardashevskiy <aik@amd.com>,
Dan Williams <dan.j.williams@intel.com>,
Xu Yilun <yilun.xu@linux.intel.com>,
linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
"Christophe Leroy (CS GROUP)" <chleroy@kernel.org>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
x86@kernel.org, Jiri Pirko <jiri@nvidia.com>,
Michael Kelley <mhklinux@outlook.com>
Subject: Re: [PATCH v7 14/22] dma-mapping: make dma_pgprot() honor __DMA_ATTR_ALLOC_CC_SHARED
Date: Mon, 13 Jul 2026 16:26:31 -0300 [thread overview]
Message-ID: <20260713192631.GT3133966@ziepe.ca> (raw)
In-Reply-To: <20260701054926.825925-15-aneesh.kumar@kernel.org>
On Wed, Jul 01, 2026 at 11:19:18AM +0530, Aneesh Kumar K.V (Arm) wrote:
> Fold encrypted/decrypted pgprot selection into dma_pgprot() so callers
> do not need to adjust the page protection separately.
>
> Update dma_pgprot() to apply pgprot_decrypted() when DMA_ATTR_CC_SHARED or
> __DMA_ATTR_ALLOC_CC_SHARED is set and pgprot_encrypted() otherwise Convert
> the dma-direct mmap paths to pass DMA_ATTR_CC_SHARED instead of open-coding
> force_dma_unencrypted() handling around dma_pgprot().
>
> Tested-by: Jiri Pirko <jiri@nvidia.com>
> Tested-by: Michael Kelley <mhklinux@outlook.com>
> Tested-by: Mostafa Saleh <smostafa@google.com>
> Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>
> ---
> kernel/dma/direct.c | 8 +++-----
> kernel/dma/mapping.c | 16 ++++++++++++----
> 2 files changed, 15 insertions(+), 9 deletions(-)
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Jason
next prev parent reply other threads:[~2026-07-13 19:26 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-01 5:49 [PATCH v7 00/22] dma-mapping: Track shared DMA state through direct, pool and swiotlb paths Aneesh Kumar K.V (Arm)
2026-07-01 5:49 ` [PATCH v7 01/22] dma-direct: return struct page from dma_direct_alloc_from_pool() Aneesh Kumar K.V (Arm)
2026-07-01 5:49 ` [PATCH v7 02/22] dma-pool: fix page leak in atomic_pool_expand() cleanup Aneesh Kumar K.V (Arm)
2026-07-01 6:08 ` sashiko-bot
2026-07-13 17:54 ` Jason Gunthorpe
2026-07-14 3:35 ` Aneesh Kumar K.V
2026-07-01 5:49 ` [PATCH v7 03/22] iommu/dma: Check atomic pool allocation result directly Aneesh Kumar K.V (Arm)
2026-07-13 17:57 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 04/22] dma: free atomic pool pages by physical address Aneesh Kumar K.V (Arm)
2026-07-13 18:10 ` Jason Gunthorpe
2026-07-14 3:57 ` Aneesh Kumar K.V
2026-07-01 5:49 ` [PATCH v7 05/22] swiotlb: Preserve allocation virtual address for dynamic pools Aneesh Kumar K.V (Arm)
2026-07-13 19:08 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 06/22] s390: Expose protected virtualization through cc_platform_has() Aneesh Kumar K.V (Arm)
2026-07-01 5:49 ` [PATCH v7 07/22] dma-direct: swiotlb: handle swiotlb alloc/free outside __dma_direct_alloc_pages Aneesh Kumar K.V (Arm)
2026-07-13 19:12 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 08/22] coco: arm64: s390: powerpc: Mark secure guests with CC_ATTR_GUEST_MEM_ENCRYPT Aneesh Kumar K.V (Arm)
2026-07-07 15:41 ` Suzuki K Poulose
2026-07-07 16:58 ` Catalin Marinas
2026-07-01 5:49 ` [PATCH v7 09/22] dma-mapping: Add internal shared allocation attribute Aneesh Kumar K.V (Arm)
2026-07-13 19:13 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 10/22] dma-direct: use __DMA_ATTR_ALLOC_CC_SHARED in alloc/free paths Aneesh Kumar K.V (Arm)
2026-07-13 19:21 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 11/22] dma-pool: track decrypted atomic pools and select them via attrs Aneesh Kumar K.V (Arm)
2026-07-13 17:56 ` Jason Gunthorpe
2026-07-14 4:02 ` Aneesh Kumar K.V
2026-07-13 18:48 ` Jason Gunthorpe
2026-07-14 4:27 ` Aneesh Kumar K.V
2026-07-01 5:49 ` [PATCH v7 12/22] dma: swiotlb: pass mapping attributes by reference Aneesh Kumar K.V (Arm)
2026-07-13 19:22 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 13/22] dma: swiotlb: track pool encryption state and honor DMA_ATTR_CC_SHARED Aneesh Kumar K.V (Arm)
2026-07-13 19:25 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 14/22] dma-mapping: make dma_pgprot() honor __DMA_ATTR_ALLOC_CC_SHARED Aneesh Kumar K.V (Arm)
2026-07-13 19:26 ` Jason Gunthorpe [this message]
2026-07-01 5:49 ` [PATCH v7 15/22] dma-direct: pass attrs to dma_capable() for DMA_ATTR_CC_SHARED checks Aneesh Kumar K.V (Arm)
2026-07-01 6:14 ` sashiko-bot
2026-07-13 19:28 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 16/22] dma-direct: make dma_direct_map_phys() honor DMA_ATTR_CC_SHARED Aneesh Kumar K.V (Arm)
2026-07-01 6:14 ` sashiko-bot
2026-07-08 11:35 ` Catalin Marinas
2026-07-08 15:09 ` Aneesh Kumar K.V
2026-07-08 17:58 ` Aneesh Kumar K.V
2026-07-09 11:13 ` Catalin Marinas
2026-07-09 18:13 ` Jason Gunthorpe
2026-07-10 5:22 ` Aneesh Kumar K.V
2026-07-10 16:19 ` Jason Gunthorpe
2026-07-10 19:09 ` Aneesh Kumar K.V
2026-07-13 13:56 ` Jason Gunthorpe
2026-07-08 12:11 ` Suzuki K Poulose
2026-07-13 19:32 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 17/22] dma-direct: set decrypted flag for remapped DMA allocations Aneesh Kumar K.V (Arm)
2026-07-13 19:37 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 18/22] dma-direct: select DMA address encoding from __DMA_ATTR_ALLOC_CC_SHARED Aneesh Kumar K.V (Arm)
2026-07-13 19:39 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 19/22] dma-direct: rename ret to cpu_addr in alloc helpers Aneesh Kumar K.V (Arm)
2026-07-13 19:40 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 20/22] dma: swiotlb: free dynamic pools from process context Aneesh Kumar K.V (Arm)
2026-07-13 19:41 ` Jason Gunthorpe
2026-07-14 5:03 ` Aneesh Kumar K.V
2026-07-01 5:49 ` [PATCH v7 21/22] dma: swiotlb: handle set_memory_decrypted() failures Aneesh Kumar K.V (Arm)
2026-07-13 19:42 ` Jason Gunthorpe
2026-07-01 5:49 ` [PATCH v7 22/22] swiotlb: remove unused SWIOTLB_FORCE flag Aneesh Kumar K.V (Arm)
2026-07-13 19:42 ` Jason Gunthorpe
2026-07-07 8:06 ` [PATCH v7 00/22] dma-mapping: Track shared DMA state through direct, pool and swiotlb paths Aneesh Kumar K.V
2026-07-07 13:03 ` Marek Szyprowski
2026-07-10 10:50 ` Will Deacon
2026-07-13 19:43 ` Jason Gunthorpe
2026-07-14 6:06 ` Marek Szyprowski
2026-07-14 9:52 ` Aneesh Kumar K.V
2026-07-14 10:00 ` Marek Szyprowski
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