Hi Gavin, On 8/15/21 2:19 AM, Gavin Shan wrote: > On 8/15/21 10:13 AM, Gavin Shan wrote: >> This series intends to virtualize Software Delegated Exception Interface >> (SDEI), which is defined by DEN0054A. It allows the hypervisor to deliver >> NMI-alike event to guest and it's needed by asynchronous page fault 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/latest >> https://github.com/gwshan/linux ; ("kvm/arm64_sdei") >> https://github.com/gwshan/qemu ; ("kvm/arm64_sdei") >> >> The SDEI event is identified by a 32-bits number. Bits[31:24] are used >> to indicate the SDEI event properties while bits[23:0] are identifying >> the unique number. The implementation takes bits[23:22] to indicate the >> owner of the SDEI event. For example, those SDEI events owned by KVM >> should have these two bits set to 0b01. Besides, the implementation >> supports SDEI events owned by KVM only. >> >> The design is pretty straightforward and the implementation is just >> following the SDEI specification, to support the defined SMCCC intefaces, >> except the IRQ binding stuff. There are several data structures >> introduced. >> Some of the objects have to be migrated by VMM. So their definitions are >> split up for VMM to include the corresponding states for migration. >> >> struct kvm_sdei_kvm >> Associated with VM and used to track the KVM exposed SDEI events >> and those registered by guest. >> struct kvm_sdei_vcpu >> Associated with vCPU and used to track SDEI event delivery. The >> preempted context is saved prior to the delivery and restored >> after that. >> struct kvm_sdei_event >> SDEI events exposed by KVM so that guest can register and enable. >> struct kvm_sdei_kvm_event >> SDEI events that have been registered by guest. >> struct kvm_sdei_vcpu_event >> SDEI events that have been queued to specific vCPU for delivery. >> >> The series is organized as below: >> >> PATCH[01] Introduces template for smccc_get_argx() >> PATCH[02] Introduces the data structures and infrastructure >> PATCH[03-14] Supports various SDEI related hypercalls >> PATCH[15] Supports SDEI event notification >> PATCH[16-17] Introduces ioctl command for migration >> PATCH[18-19] Supports SDEI event injection and cancellation >> PATCH[20] Exports SDEI capability >> PATCH[21] Adds self-test case for SDEI virtualization >> > > [...] > > I explicitly copied James Morse and Mark Rutland when posting the series, > but something unknown went wrong. I'm including them here to avoid > reposting the whole series. I don't see James nor Mark included here either Eric > > Thanks, > Gavin > > _______________________________________________ > kvmarm mailing list > kvmarm@xxxxxxxxxxxxxxxxxxxxx > https://lists.cs.columbia.edu/mailman/listinfo/kvmarm > _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
