On Tue, Apr 15 2014 at 7:14:12 am BST, Anup Patel <anup.patel@xxxxxxxxxx> wrote: > This patch adds emulation of PSCI v0.2 MIGRATE, MIGRATE_INFO_TYPE, and > MIGRATE_INFO_UP_CPU function calls for KVM ARM/ARM64. > > KVM ARM/ARM64 being a hypervisor (and not a Trusted OS), we cannot provide > this functions hence we emulate these functions in following way: > 1. MIGRATE - Returns "Not Supported" > 2. MIGRATE_INFO_TYPE - Return 2 i.e. Trusted OS is not present > 3. MIGRATE_INFO_UP_CPU - Returns "Not Supported" > > Signed-off-by: Anup Patel <anup.patel@xxxxxxxxxx> > Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@xxxxxxxxxx> > Reviewed-by: Christoffer Dall <christoffer.dall@xxxxxxxxxx> Acked-by: Marc Zyngier <marc.zyngier@xxxxxxx> > --- > arch/arm/kvm/psci.c | 21 ++++++++++++++++----- > 1 file changed, 16 insertions(+), 5 deletions(-) > > diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c > index f6f9290..1af0016 100644 > --- a/arch/arm/kvm/psci.c > +++ b/arch/arm/kvm/psci.c > @@ -182,6 +182,22 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu) > case PSCI_0_2_FN64_AFFINITY_INFO: > val = kvm_psci_vcpu_affinity_info(vcpu); > break; > + case PSCI_0_2_FN_MIGRATE: > + case PSCI_0_2_FN64_MIGRATE: > + val = PSCI_RET_NOT_SUPPORTED; > + break; > + case PSCI_0_2_FN_MIGRATE_INFO_TYPE: > + /* > + * Trusted OS is MP hence does not require migration > + * or > + * Trusted OS is not present > + */ > + val = PSCI_0_2_TOS_MP; > + break; > + case PSCI_0_2_FN_MIGRATE_INFO_UP_CPU: > + case PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU: > + val = PSCI_RET_NOT_SUPPORTED; > + break; > case PSCI_0_2_FN_SYSTEM_OFF: > kvm_psci_system_off(vcpu); > val = PSCI_RET_SUCCESS; > @@ -193,12 +209,7 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu) > ret = 0; > break; > case PSCI_0_2_FN_CPU_SUSPEND: > - case PSCI_0_2_FN_MIGRATE: > - case PSCI_0_2_FN_MIGRATE_INFO_TYPE: > - case PSCI_0_2_FN_MIGRATE_INFO_UP_CPU: > case PSCI_0_2_FN64_CPU_SUSPEND: > - case PSCI_0_2_FN64_MIGRATE: > - case PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU: > val = PSCI_RET_NOT_SUPPORTED; > break; > default: -- Jazz is not dead. It just smells funny. _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
