[PATCH v20 22/22] KVM: arm64: CCA: Control user register access for Realms

Suzuki K Poulose suzuki.poulose at arm.com
Thu Oct 1 09:37:37 PDT 2026


On 01/10/2026 16:53, Catalin Marinas wrote:
> On Thu, Sep 24, 2026 at 05:05:04PM +0100, Suzuki K Poulose wrote:
>> From: Jean-Philippe Brucker <jean-philippe at linaro.org>
>>
>> The RMM restricts the access to the register states that the host can
>> read/modify for a given Realm.
>>
>> e.g., At VCPU creation, can modify GPRS (x0-x30) and PC.
>>        While servicing SMCCC calls via RSI_HOST_CALL or servicing PSCI
>>        requests.
>>        MMIO emulation in the unprotected space.
>>
>> Additionally we use the sysreg configuration to advertise/configure the
>> following Realm parameters, which are required before the Realm Descriptor
>> :w
> 
> Should use Emacs ;)
> 

Dang it ;-) I have fixed it in v21. Thanks

Cheers
Suzuki




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