diff options
Diffstat (limited to 'arch/arm/include/asm/kvm_host.h')
| -rw-r--r-- | arch/arm/include/asm/kvm_host.h | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index c7c28c885a19..2d75e77bf7bb 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -21,6 +21,7 @@ #include <linux/types.h> #include <linux/kvm_types.h> +#include <asm/cputype.h> #include <asm/kvm.h> #include <asm/kvm_asm.h> #include <asm/kvm_mmio.h> @@ -311,8 +312,29 @@ static inline void kvm_arm_vhe_guest_exit(void) {} static inline bool kvm_arm_harden_branch_predictor(void) { + switch(read_cpuid_part()) { +#ifdef CONFIG_HARDEN_BRANCH_PREDICTOR + case ARM_CPU_PART_BRAHMA_B15: + case ARM_CPU_PART_CORTEX_A12: + case ARM_CPU_PART_CORTEX_A15: + case ARM_CPU_PART_CORTEX_A17: + return true; +#endif + default: + return false; + } +} + +#define KVM_SSBD_UNKNOWN -1 +#define KVM_SSBD_FORCE_DISABLE 0 +#define KVM_SSBD_KERNEL 1 +#define KVM_SSBD_FORCE_ENABLE 2 +#define KVM_SSBD_MITIGATED 3 + +static inline int kvm_arm_have_ssbd(void) +{ /* No way to detect it yet, pretend it is not there. */ - return false; + return KVM_SSBD_UNKNOWN; } static inline void kvm_vcpu_load_sysregs(struct kvm_vcpu *vcpu) {} |