This adds QEMU wrappers for KVM_SET_ONE_REG/KVM_GET_ONE_REG ioctls. Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru> --- Changes: v2: * added Doc Comments * removed error_print --- include/sysemu/kvm.h | 4 ++++ kvm-all.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+)
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index c7bc07b..b2d61e9 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -319,4 +319,8 @@ int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq); void kvm_pc_gsi_handler(void *opaque, int n, int level); void kvm_pc_setup_irq_routing(bool pci_enabled); void kvm_init_irq_routing(KVMState *s); + +int kvm_set_one_reg(CPUState *cs, uint64_t id, void *addr); +int kvm_get_one_reg(CPUState *cs, uint64_t id, void *addr); + #endif diff --git a/kvm-all.c b/kvm-all.c index ded7fc8..da02c96 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -34,6 +34,7 @@ #include "exec/address-spaces.h" #include "qemu/event_notifier.h" #include "trace.h" +#include "qemu/error-report.h" /* This check must be after config-host.h is included */ #ifdef CONFIG_EVENTFD @@ -2049,3 +2050,35 @@ int kvm_on_sigbus(int code, void *addr) { return kvm_arch_on_sigbus(code, addr); } + +/** + * 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 + * + * Returns 0 if succeded and negative value if failed. + */ +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, ®); +} + +/** + * 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 + * + * Returns 0 if succeded and negative value if failed. + */ +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, ®); +} -- 1.8.4.rc4