From 4429fc64b90368e9bc93f933ea8b011d8db3a2f2 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Mon, 2 Jun 2014 15:37:13 +0200 Subject: arm/arm64: KVM: rework MPIDR assignment and add accessors The virtual MPIDR registers (containing topology information) for the guest are currently mapped linearily to the vcpu_id. Improve this mapping for arm64 by using three levels to not artificially limit the number of vCPUs. To help this, change and rename the kvm_vcpu_get_mpidr() function to mask off the non-affinity bits in the MPIDR register. Also add an accessor to later allow easier access to a vCPU with a given MPIDR. Use this new accessor in the PSCI emulation. Signed-off-by: Andre Przywara Reviewed-by: Christoffer Dall Reviewed-by: Marc Zyngier Signed-off-by: Christoffer Dall --- arch/arm64/include/asm/kvm_emulate.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch/arm64/include/asm/kvm_emulate.h') diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h index a6fa2d2cd41c..b3f1defcb081 100644 --- a/arch/arm64/include/asm/kvm_emulate.h +++ b/arch/arm64/include/asm/kvm_emulate.h @@ -27,6 +27,7 @@ #include #include #include +#include unsigned long *vcpu_reg32(const struct kvm_vcpu *vcpu, u8 reg_num); unsigned long *vcpu_spsr32(const struct kvm_vcpu *vcpu); @@ -192,9 +193,9 @@ static inline u8 kvm_vcpu_trap_get_fault_type(const struct kvm_vcpu *vcpu) return kvm_vcpu_get_hsr(vcpu) & ESR_EL2_FSC_TYPE; } -static inline unsigned long kvm_vcpu_get_mpidr(struct kvm_vcpu *vcpu) +static inline unsigned long kvm_vcpu_get_mpidr_aff(struct kvm_vcpu *vcpu) { - return vcpu_sys_reg(vcpu, MPIDR_EL1); + return vcpu_sys_reg(vcpu, MPIDR_EL1) & MPIDR_HWID_BITMASK; } static inline void kvm_vcpu_set_be(struct kvm_vcpu *vcpu) -- cgit v1.2.1