diff options
| -rw-r--r-- | arch/arm/include/asm/kvm_emulate.h | 12 | ||||
| -rw-r--r-- | arch/arm/kvm/emulate.c | 2 | ||||
| -rw-r--r-- | arch/arm64/include/asm/kvm_emulate.h | 41 | ||||
| -rw-r--r-- | arch/arm64/kvm/inject_fault.c | 4 | ||||
| -rw-r--r-- | virt/kvm/arm/aarch32.c | 2 |
5 files changed, 51 insertions, 10 deletions
diff --git a/arch/arm/include/asm/kvm_emulate.h b/arch/arm/include/asm/kvm_emulate.h index e27caa4b47a1..6493bd479ddc 100644 --- a/arch/arm/include/asm/kvm_emulate.h +++ b/arch/arm/include/asm/kvm_emulate.h @@ -41,7 +41,17 @@ static inline unsigned long *vcpu_reg32(struct kvm_vcpu *vcpu, u8 reg_num) return vcpu_reg(vcpu, reg_num); } -unsigned long *vcpu_spsr(struct kvm_vcpu *vcpu); +unsigned long *__vcpu_spsr(struct kvm_vcpu *vcpu); + +static inline unsigned long vpcu_read_spsr(struct kvm_vcpu *vcpu) +{ + return *__vcpu_spsr(vcpu); +} + +static inline void vcpu_write_spsr(struct kvm_vcpu *vcpu, unsigned long v) +{ + *__vcpu_spsr(vcpu) = v; +} static inline unsigned long vcpu_get_reg(struct kvm_vcpu *vcpu, u8 reg_num) diff --git a/arch/arm/kvm/emulate.c b/arch/arm/kvm/emulate.c index fa501bf437f3..9046b53d87c1 100644 --- a/arch/arm/kvm/emulate.c +++ b/arch/arm/kvm/emulate.c @@ -142,7 +142,7 @@ unsigned long *vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num) /* * Return the SPSR for the current mode of the virtual CPU. */ -unsigned long *vcpu_spsr(struct kvm_vcpu *vcpu) +unsigned long *__vcpu_spsr(struct kvm_vcpu *vcpu) { unsigned long mode = *vcpu_cpsr(vcpu) & MODE_MASK; switch (mode) { diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h index d313aaae5c38..f32640132e26 100644 --- a/arch/arm64/include/asm/kvm_emulate.h +++ b/arch/arm64/include/asm/kvm_emulate.h @@ -26,6 +26,7 @@ #include <asm/esr.h> #include <asm/kvm_arm.h> +#include <asm/kvm_hyp.h> #include <asm/kvm_mmio.h> #include <asm/ptrace.h> #include <asm/cputype.h> @@ -143,13 +144,43 @@ static inline void vcpu_set_reg(struct kvm_vcpu *vcpu, u8 reg_num, vcpu_gp_regs(vcpu)->regs.regs[reg_num] = val; } -/* Get vcpu SPSR for current mode */ -static inline unsigned long *vcpu_spsr(const struct kvm_vcpu *vcpu) +static inline unsigned long vcpu_read_spsr(const struct kvm_vcpu *vcpu) { - if (vcpu_mode_is_32bit(vcpu)) - return vcpu_spsr32(vcpu); + unsigned long *p = (unsigned long *)&vcpu_gp_regs(vcpu)->spsr[KVM_SPSR_EL1]; + + if (vcpu_mode_is_32bit(vcpu)) { + unsigned long *p_32bit = vcpu_spsr32(vcpu); + + /* KVM_SPSR_SVC aliases KVM_SPSR_EL1 */ + if (p_32bit != p) + return *p_32bit; + } + + if (vcpu->arch.sysregs_loaded_on_cpu) + return read_sysreg_el1(spsr); + else + return *p; +} - return (unsigned long *)&vcpu_gp_regs(vcpu)->spsr[KVM_SPSR_EL1]; +static inline void vcpu_write_spsr(const struct kvm_vcpu *vcpu, unsigned long v) +{ + unsigned long *p = (unsigned long *)&vcpu_gp_regs(vcpu)->spsr[KVM_SPSR_EL1]; + + /* KVM_SPSR_SVC aliases KVM_SPSR_EL1 */ + if (vcpu_mode_is_32bit(vcpu)) { + unsigned long *p_32bit = vcpu_spsr32(vcpu); + + /* KVM_SPSR_SVC aliases KVM_SPSR_EL1 */ + if (p_32bit != p) { + *p_32bit = v; + return; + } + } + + if (vcpu->arch.sysregs_loaded_on_cpu) + write_sysreg_el1(v, spsr); + else + *p = v; } static inline bool vcpu_mode_priv(const struct kvm_vcpu *vcpu) diff --git a/arch/arm64/kvm/inject_fault.c b/arch/arm64/kvm/inject_fault.c index 63dba401fc7d..7f8d2a4e420f 100644 --- a/arch/arm64/kvm/inject_fault.c +++ b/arch/arm64/kvm/inject_fault.c @@ -71,7 +71,7 @@ static void inject_abt64(struct kvm_vcpu *vcpu, bool is_iabt, unsigned long addr *vcpu_pc(vcpu) = get_except_vector(vcpu, except_type_sync); *vcpu_cpsr(vcpu) = PSTATE_FAULT_BITS_64; - *vcpu_spsr(vcpu) = cpsr; + vcpu_write_spsr(vcpu, cpsr); vcpu_write_sys_reg(vcpu, addr, FAR_EL1); @@ -106,7 +106,7 @@ static void inject_undef64(struct kvm_vcpu *vcpu) *vcpu_pc(vcpu) = get_except_vector(vcpu, except_type_sync); *vcpu_cpsr(vcpu) = PSTATE_FAULT_BITS_64; - *vcpu_spsr(vcpu) = cpsr; + vcpu_write_spsr(vcpu, cpsr); /* * Build an unknown exception, depending on the instruction diff --git a/virt/kvm/arm/aarch32.c b/virt/kvm/arm/aarch32.c index 8bc479fa37e6..efc84cbe8277 100644 --- a/virt/kvm/arm/aarch32.c +++ b/virt/kvm/arm/aarch32.c @@ -178,7 +178,7 @@ static void prepare_fault32(struct kvm_vcpu *vcpu, u32 mode, u32 vect_offset) *vcpu_cpsr(vcpu) = cpsr; /* Note: These now point to the banked copies */ - *vcpu_spsr(vcpu) = new_spsr_value; + vcpu_write_spsr(vcpu, new_spsr_value); *vcpu_reg32(vcpu, 14) = *vcpu_pc(vcpu) + return_offset; /* Branch to exception vector */ |