Messages in this thread |  | | Subject | Re: [PATCH v6 00/18] Support SDEI Virtualization | From | Gavin Shan <> | Date | Sun, 3 Apr 2022 23:47:07 +0800 |
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On 4/3/22 11:38 PM, Gavin Shan wrote: > This series intends to virtualize Software Delegated Exception Interface > (SDEI), which is defined by DEN0054C (v1.1). It allows the hypervisor to > deliver NMI-alike SDEI event to guest and it's needed by Async PF to > deliver page-not-present notification from hypervisor to guest. The code > and the required qemu changes can be found from: > > https://developer.arm.com/documentation/den0054/c > https://github.com/gwshan/linux ("kvm/arm64_sdei") > https://github.com/gwshan/qemu ("kvm/arm64_sdei") > > The design is quite strightforward by following the specification. The > (SDEI) events are classified into the shared and private ones according > to their scope. The shared event is system or VM scoped, but the private > event is vcpu scoped. This implementation doesn't support the shared > event because all the needed events are private. Besides, the migration > isn't supported by implementation and it's something to be supported > in future. > > There are several objects (data structures) introduced to help on the > event registration, enablement, disablement, unregistration, reset, > delivery and handling. > > * kvm_sdei_exposed_event > The event which are defined and exposed by KVM. The event can't > be registered until it's exposed. Besides, all the information > in this event can't be changed after it's exposed. > > * kvm_sdei_event > The events are created based on the exposed events. Their states > are changed when hypercalls are received or they are delivered > to guest for handling. > > * kvm_sdei_vcpu_context > The vcpu context helps to handle events. The interrupted context > is saved before the event handler is executed, and restored after > the event handler is to finish. > > * kvm_sdei_vcpu > Place holder for all objects for one particular VCPU. > > The patches are organized as below: > > PATCH[01-02] Preparatory work to extend smccc_get_argx() and refactor > hypercall routing mechanism > PATCH[03] Adds SDEI virtualization infrastructure > PATCH[04-16] Supports various SDEI hypercalls and event handling > PATCH[17] Exposes SDEI capability > PATCH[18] Adds SDEI selftest case > > The previous revisions can be found: > > v5: https://lore.kernel.org/kvmarm/20220322080710.51727-1-gshan@redhat.com/ > v4: https://lore.kernel.org/kvmarm/20210815001352.81927-1-gshan@redhat.com/ > v3: https://lore.kernel.org/kvmarm/20210507083124.43347-1-gshan@redhat.com/ > v2: https://lore.kernel.org/kvmarm/20210209032733.99996-1-gshan@redhat.com/ > v1: https://lore.kernel.org/kvmarm/20200817100531.83045-1-gshan@redhat.com/ >
I'm explicitly copying Oliver, James, Mark and Shannon to avoid resending this series. It seems they have been skipped even I explicitly copied them by 'git send-email --cc=<email-addr>'.
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Thanks, Gavin
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