From: Alexey Kardashevskiy <a...@ozlabs.ru> This adds QEMU wrappers for KVM_SET_ONE_REG/KVM_GET_ONE_REG ioctls.
Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> --- include/sysemu/kvm.h | 20 ++++++++++++++++++++ kvm-all.c | 18 ++++++++++++++++++ 2 files changed, 38 insertions(+) diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index 0bee1e8..84a4f40 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -343,6 +343,26 @@ void kvm_pc_setup_irq_routing(bool pci_enabled); void kvm_init_irq_routing(KVMState *s); /** + * kvm_set_one_reg - set a register value in KVM via KVM_SET_ONE_REG ioctl + * @id: The register ID + * @addr: The pointer to a value must point to a variable of the correct + * type/size for the register being accessed. + * + * Returns: 0 on success, or a negative errno on failure. + */ +int kvm_set_one_reg(CPUState *cs, uint64_t id, void *addr); + +/** + * kvm_get_one_reg - get a register value from KVM via KVM_GET_ONE_REG ioctl + * @id: The register ID + * @addr: The pointer to a value must point to a variable of the correct + * type/size for the register being accessed. + * + * Returns: 0 on success, or a negative errno on failure. + */ +int kvm_get_one_reg(CPUState *cs, uint64_t id, void *addr); + +/** * kvm_arch_irqchip_create: * @KVMState: The KVMState pointer * diff --git a/kvm-all.c b/kvm-all.c index 82a9119..724c423 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -2114,3 +2114,21 @@ int kvm_create_device(KVMState *s, uint64_t type, bool test) return test ? 0 : create_dev.fd; } + +int kvm_set_one_reg(CPUState *cs, uint64_t id, void *addr) +{ + struct kvm_one_reg reg = { + .id = id, + .addr = (uintptr_t)addr, + }; + return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); +} + +int kvm_get_one_reg(CPUState *cs, uint64_t id, void *addr) +{ + struct kvm_one_reg reg = { + .id = id, + .addr = (uintptr_t)addr, + }; + return kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); +} -- 1.8.3.1