[PATCH v5 16/19] arm64: Enable memory encrypt for Realms

[Catalin Marinas]

On Mon, Aug 19, 2024 at 02:19:21PM +0100, Steven Price wrote:
> From: Suzuki K Poulose <suzuki.poulose at arm.com>
> 
> Use the memory encryption APIs to trigger a RSI call to request a
> transition between protected memory and shared memory (or vice versa)
> and updating the kernel's linear map of modified pages to flip the top
> bit of the IPA. This requires that block mappings are not used in the
> direct map for realm guests.
> 
> Signed-off-by: Suzuki K Poulose <suzuki.poulose at arm.com>
> Co-developed-by: Steven Price <steven.price at arm.com>
> Signed-off-by: Steven Price <steven.price at arm.com>

Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>