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Date: Tue, 9 Jun 2026 14:44:24 +0100
From: Catalin Marinas <catalin.marinas@arm.com>
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>,
	Jiri Pirko <jiri@resnulli.us>, Jason Gunthorpe <jgg@ziepe.ca>,
	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>,
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	Sven Schnelle <svens@linux.ibm.com>, x86@kernel.org,
	Halil Pasic <pasic@linux.ibm.com>,
	Matthew Rosato <mjrosato@linux.ibm.com>,
	Jaehoon Kim <jhkim@linux.ibm.com>
Subject: Re: [PATCH v6 01/20] s390: Expose protected virtualization through
 cc_platform_has()
Message-ID: <aigYuHoKHPJPCGjz@arm.com>
References: <20260604083959.1265923-1-aneesh.kumar@kernel.org>
 <20260604083959.1265923-2-aneesh.kumar@kernel.org>
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In-Reply-To: <20260604083959.1265923-2-aneesh.kumar@kernel.org>

On Thu, Jun 04, 2026 at 02:09:40PM +0530, Aneesh Kumar K.V (Arm) wrote:
> Protected virtualization guests use memory encryption, so advertise that to
> the rest of the kernel through cc_platform_has(CC_ATTR_MEM_ENCRYPT).
> 
> s390 already forces DMA mappings to be unencrypted for protected
> virtualization guests through force_dma_unencrypted(). Add
> ARCH_HAS_CC_PLATFORM and provide the matching cc_platform_has()
> implementation
> 
> Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>
> ---

Nit: just drop the --- line if you did intend to cc those people.
Nothing wrong for them to end up in the commit log (proof that they've
been cc'ed if they did not reply ;)).

-- 
Catalin