From: Catalin Marinas <catalin.marinas@arm.com>
To: Steven Price <steven.price@arm.com>
Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>,
James Morse <james.morse@arm.com>,
Oliver Upton <oliver.upton@linux.dev>,
Zenghui Yu <yuzenghui@huawei.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Joey Gouly <joey.gouly@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Christoffer Dall <christoffer.dall@arm.com>,
Fuad Tabba <tabba@google.com>,
linux-coco@lists.linux.dev,
Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>,
Gavin Shan <gshan@redhat.com>,
Shanker Donthineni <sdonthineni@nvidia.com>,
Alper Gun <alpergun@google.com>,
"Aneesh Kumar K . V" <aneesh.kumar@kernel.org>
Subject: Re: [PATCH v6 02/11] arm64: Detect if in a realm and set RIPAS RAM
Date: Fri, 11 Oct 2024 14:12:27 +0100 [thread overview]
Message-ID: <ZwkkOxR4vy_uPA70@arm.com> (raw)
In-Reply-To: <085896de-9a39-4f90-9a2d-3f8662c2e2a2@arm.com>
On Fri, Oct 04, 2024 at 04:05:17PM +0100, Steven Price wrote:
> I should have reworded this commit message to something like:
>
> """
> Detect that the VM is a realm guest by the presence of the RSI
> interface. This is done after PSCI has been initialised so that we can
> check the SMCCC conduit before making any RSI calls.
>
> If in a realm then iterate over all memory ensuring that it is marked as
> RIPAS RAM. The loader is required to do this for us, however if some
> memory is missed this will cause the guest to receive a hard to debug
> external abort at some random point in the future. So for a
> belt-and-braces approach set all memory to RIPAS RAM. Any failure here
> implies that the RAM regions passed to Linux are incorrect so panic()
> promptly to make the situation clear.
> """
With the updated commit description, the patch looks fine to me.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
next prev parent reply other threads:[~2024-10-11 13:14 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-04 14:42 [PATCH v6 00/11] arm64: Support for running as a guest in Arm CCA Steven Price
2024-10-04 14:42 ` [PATCH v6 01/11] arm64: rsi: Add RSI definitions Steven Price
2024-10-07 23:08 ` Gavin Shan
2024-10-11 14:14 ` Steven Price
2024-10-04 14:42 ` [PATCH v6 02/11] arm64: Detect if in a realm and set RIPAS RAM Steven Price
2024-10-04 15:05 ` Steven Price
2024-10-11 13:12 ` Catalin Marinas [this message]
2024-10-07 23:31 ` Gavin Shan
2024-10-11 14:14 ` Steven Price
2024-10-04 14:42 ` [PATCH v6 03/11] arm64: realm: Query IPA size from the RMM Steven Price
2024-10-07 23:33 ` Gavin Shan
2024-10-15 3:55 ` Gavin Shan
2024-10-15 9:08 ` Steven Price
2024-10-04 14:42 ` [PATCH v6 04/11] arm64: rsi: Add support for checking whether an MMIO is protected Steven Price
2024-10-08 0:24 ` Gavin Shan
2024-10-11 14:14 ` Steven Price
2024-10-04 14:43 ` [PATCH v6 05/11] arm64: rsi: Map unprotected MMIO as decrypted Steven Price
2024-10-08 0:31 ` Gavin Shan
2024-10-11 13:19 ` Catalin Marinas
2024-10-12 5:22 ` Gavin Shan
2024-10-11 13:20 ` Catalin Marinas
2024-10-04 14:43 ` [PATCH v6 06/11] efi: arm64: Map Device with Prot Shared Steven Price
2024-10-08 0:31 ` Gavin Shan
2024-10-11 13:23 ` Catalin Marinas
2024-10-04 14:43 ` [PATCH v6 07/11] arm64: Enforce bounce buffers for realm DMA Steven Price
2024-10-08 2:51 ` Gavin Shan
2024-10-04 14:43 ` [PATCH v6 08/11] arm64: mm: Avoid TLBI when marking pages as valid Steven Price
2024-10-08 2:52 ` Gavin Shan
2024-10-15 9:50 ` Suzuki K Poulose
2024-10-04 14:43 ` [PATCH v6 09/11] arm64: Enable memory encrypt for Realms Steven Price
2024-10-08 2:56 ` Gavin Shan
2024-10-04 14:43 ` [PATCH v6 10/11] virt: arm-cca-guest: TSM_REPORT support for realms Steven Price
2024-10-05 15:42 ` kernel test robot
2024-10-08 4:12 ` Gavin Shan
2024-10-11 14:14 ` Steven Price
2024-10-11 16:22 ` Suzuki K Poulose
2024-10-12 6:06 ` Gavin Shan
2024-10-14 8:56 ` Suzuki K Poulose
2024-10-14 14:41 ` Steven Price
2024-10-14 14:46 ` Suzuki K Poulose
2024-10-15 0:01 ` Gavin Shan
2024-10-04 14:43 ` [PATCH v6 11/11] arm64: Document Arm Confidential Compute Steven Price
2024-10-08 4:17 ` Gavin Shan
2024-10-08 11:05 ` Jean-Philippe Brucker
2024-10-11 14:14 ` Steven Price
2024-10-15 9:55 ` Suzuki K Poulose
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