On Fri, Sep 6, 2013 at 1:35 PM, Claudio Fontana <claudio.fontana@xxxxxxxxxx> wrote: > Hi Anup, > > I am no native English speaker, but this is my attempt at improving the descriptions: > > On 05.09.2013 16:46, Anup Patel wrote: >> To implement target type KVM_ARM_TARGET_HOST we make the >> KVM_ARM_VCPU_INIT ioctl bi-direction so that KVM ARM/ARM64 >> can return appropriate target type to user space via >> struct kvm_vcpu_init. > > If I understood correctly: > > To implement target type KVM_ARM_TARGET_HOST we change > the "struct kvm_cpu_init" input parameter into an in/out > parameter, so that KVM ARM/ARM64 can inform user space about > the chosen target type. Yes, you got it right. Actually, KVM will return back both VCPU target type and VCPU features that KVM will be emulating for the VCPU. > >> Signed-off-by: Anup Patel <anup.patel@xxxxxxxxxx> >> Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@xxxxxxxxxx> >> --- >> Documentation/virtual/kvm/api.txt | 5 ++++- >> 1 file changed, 4 insertions(+), 1 deletion(-) >> >> diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt >> index ef925ea..c0a3a05 100644 >> --- a/Documentation/virtual/kvm/api.txt >> +++ b/Documentation/virtual/kvm/api.txt >> @@ -2283,7 +2283,7 @@ current state. "addr" is ignored. >> Capability: basic >> Architectures: arm, arm64 >> Type: vcpu ioctl >> -Parameters: struct struct kvm_vcpu_init (in) >> +Parameters: struct kvm_vcpu_init (in/out) >> Returns: 0 on success; -1 on error >> Errors: >> EINVAL: the target is unknown, or the combination of features is invalid. >> @@ -2303,6 +2303,9 @@ Possible features: >> - KVM_ARM_VCPU_EL1_32BIT: Starts the CPU in a 32bit mode. >> Depends on KVM_CAP_ARM_EL1_32BIT (arm64 only). >> >> +This ioctl returns updated struct kvm_vcpu_init showing VCPU target >> +type and VCPU features that will be available. >> + > > This ioctl returns an updated struct kvm_vcpu_init informing about the > chosen VCPU target type and available VCPU features. > >> >> 4.83 KVM_GET_REG_LIST >> >> > > Ciao, > > Claudio > > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel Regards, Anup _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
