Re: [PATCH v5 19/19] virt: arm-cca-guest: TSM_REPORT support for realms
From: Steven Price <steven.price@arm.com>
Date: 2024-09-27 15:21:28
Also in:
kvm, kvmarm, linux-coco, lkml
On 02/09/2024 04:53, Aneesh Kumar K.V wrote:
Steven Price [off-list ref] writes:quoted
From: Sami Mujawar <redacted>...quoted
--- /dev/null +++ b/drivers/virt/coco/arm-cca-guest/Kconfig@@ -0,0 +1,11 @@ +config ARM_CCA_GUEST + tristate "Arm CCA Guest driver" + depends on ARM64 + default m + select TSM_REPORTS + help + The driver provides userspace interface to request and + attestation report from the Realm Management Monitor(RMM). + + If you choose 'M' here, this module will be called + arm-cca-guest.Can we rename the generic Kconfig variable to ARM_CCA_TSM_REPORT?. Also should the directory be arm64-cca-guest?
This matches the existing sev-guest and tdx-guest directories (and SEV_GUEST/TDX_GUEST_DRIVER kconfig), although I agree it's not great naming as it stands. But I'm also wondering if this will one day expand to include some other communication with the RMM. For example I know it's been discussed whether the guest should have involvement with firmware updates or migration to another host. So there's a reasonable chance we could end up renaming it back to a general "arm_cca_guest" if it grows more capabilities in the future. Steve