Peter Maydell <peter.maydell@xxxxxxxxxx> writes: > On 6 July 2018 at 10:20, Alex Bennée <alex.bennee@xxxxxxxxxx> wrote: >> For the most part in QEMU with KVM we just treat the list of registers >> we get from the OS as an opaque blob of things we save to memory and >> pass back. > > This is specifically not the case for the SVE registers -- we > will need extra code to handle them. (The current code only > allows for the possibility of 64-bit registers, so if we'd > allowed the kernel to hand it the larger SVE registers it would > just have fallen over. This is why QEMU needs to specifically > enable SVE via the VCPU_INIT call.) Ahh right. So currently both the KVM_GET_REG_LIST and the core registers use KVM_GET/SET_ONE_REG which certainly won't do the trick. So I guess we need another IOCTL (or to enhance the current one) and a KVM capability bit as well? > > thanks > -- PMM -- Alex Bennée _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
