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| author | Suzuki K. Poulose <suzuki.poulose@arm.com> | 2015-06-17 12:00:46 +0300 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2015-08-12 13:28:22 +0300 |
| commit | bca556ac468ab4744692926b67cb525cdce850c9 (patch) | |
| tree | 748b8e25c9803c683e5e33fa34ead2f3bbf4a54d | |
| parent | eef8c85a3b81301f912e8802a1dd9f42dd884947 (diff) | |
| download | linux-bca556ac468ab4744692926b67cb525cdce850c9.tar.xz | |
arm64/kvm: Add generic v8 KVM target
This patch adds a generic ARM v8 KVM target cpu type for use
by the new CPUs which eventualy ends up using the common sys_reg
table. For backward compatibility the existing targets have been
preserved. Any new target CPU that can be covered by generic v8
sys_reg tables should make use of the new generic target.
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Acked-by: Marc Zyngier <Marc.Zyngier@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| -rw-r--r-- | arch/arm64/include/uapi/asm/kvm.h | 10 | ||||
| -rw-r--r-- | arch/arm64/kvm/guest.c | 3 | ||||
| -rw-r--r-- | arch/arm64/kvm/sys_regs_generic_v8.c | 2 |
3 files changed, 12 insertions, 3 deletions
diff --git a/arch/arm64/include/uapi/asm/kvm.h b/arch/arm64/include/uapi/asm/kvm.h index d82f3f316ba4..0cd7b5947dfc 100644 --- a/arch/arm64/include/uapi/asm/kvm.h +++ b/arch/arm64/include/uapi/asm/kvm.h @@ -53,14 +53,20 @@ struct kvm_regs { struct user_fpsimd_state fp_regs; }; -/* Supported Processor Types */ +/* + * Supported CPU Targets - Adding a new target type is not recommended, + * unless there are some special registers not supported by the + * genericv8 syreg table. + */ #define KVM_ARM_TARGET_AEM_V8 0 #define KVM_ARM_TARGET_FOUNDATION_V8 1 #define KVM_ARM_TARGET_CORTEX_A57 2 #define KVM_ARM_TARGET_XGENE_POTENZA 3 #define KVM_ARM_TARGET_CORTEX_A53 4 +/* Generic ARM v8 target */ +#define KVM_ARM_TARGET_GENERIC_V8 5 -#define KVM_ARM_NUM_TARGETS 5 +#define KVM_ARM_NUM_TARGETS 6 /* KVM_ARM_SET_DEVICE_ADDR ioctl id encoding */ #define KVM_ARM_DEVICE_TYPE_SHIFT 0 diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 48868d893870..d250160d32bc 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -295,7 +295,8 @@ int __attribute_const__ kvm_target_cpu(void) break; }; - return -EINVAL; + /* Return a default generic target */ + return KVM_ARM_TARGET_GENERIC_V8; } int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init) diff --git a/arch/arm64/kvm/sys_regs_generic_v8.c b/arch/arm64/kvm/sys_regs_generic_v8.c index 475fd2929310..1e4576824165 100644 --- a/arch/arm64/kvm/sys_regs_generic_v8.c +++ b/arch/arm64/kvm/sys_regs_generic_v8.c @@ -94,6 +94,8 @@ static int __init sys_reg_genericv8_init(void) &genericv8_target_table); kvm_register_target_sys_reg_table(KVM_ARM_TARGET_XGENE_POTENZA, &genericv8_target_table); + kvm_register_target_sys_reg_table(KVM_ARM_TARGET_GENERIC_V8, + &genericv8_target_table); return 0; } |