KVM: arm64: Move __adjust_pc out of line
In order to make it easy to call __adjust_pc() from the EL1 code (in the case of nVHE), rename it to __kvm_adjust_pc() and move it out of line. No expected functional change. Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com> Reviewed-by: Zenghui Yu <yuzenghui@huawei.com> Tested-by: Zenghui Yu <yuzenghui@huawei.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Cc: stable@vger.kernel.org # 5.11
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@ -201,6 +201,8 @@ extern void __kvm_timer_set_cntvoff(u64 cntvoff);
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extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu);
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extern void __kvm_adjust_pc(struct kvm_vcpu *vcpu);
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extern u64 __vgic_v3_get_gic_config(void);
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extern u64 __vgic_v3_read_vmcr(void);
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extern void __vgic_v3_write_vmcr(u32 vmcr);
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@ -296,7 +296,7 @@ static void enter_exception32(struct kvm_vcpu *vcpu, u32 mode, u32 vect_offset)
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*vcpu_pc(vcpu) = vect_offset;
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}
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void kvm_inject_exception(struct kvm_vcpu *vcpu)
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static void kvm_inject_exception(struct kvm_vcpu *vcpu)
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{
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if (vcpu_el1_is_32bit(vcpu)) {
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switch (vcpu->arch.flags & KVM_ARM64_EXCEPT_MASK) {
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@ -329,3 +329,19 @@ void kvm_inject_exception(struct kvm_vcpu *vcpu)
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}
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}
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}
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/*
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* Adjust the guest PC on entry, depending on flags provided by EL1
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* for the purpose of emulation (MMIO, sysreg) or exception injection.
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*/
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void __kvm_adjust_pc(struct kvm_vcpu *vcpu)
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{
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if (vcpu->arch.flags & KVM_ARM64_PENDING_EXCEPTION) {
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kvm_inject_exception(vcpu);
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vcpu->arch.flags &= ~(KVM_ARM64_PENDING_EXCEPTION |
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KVM_ARM64_EXCEPT_MASK);
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} else if (vcpu->arch.flags & KVM_ARM64_INCREMENT_PC) {
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kvm_skip_instr(vcpu);
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vcpu->arch.flags &= ~KVM_ARM64_INCREMENT_PC;
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}
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}
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@ -13,8 +13,6 @@
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#include <asm/kvm_emulate.h>
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#include <asm/kvm_host.h>
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void kvm_inject_exception(struct kvm_vcpu *vcpu);
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static inline void kvm_skip_instr(struct kvm_vcpu *vcpu)
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{
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if (vcpu_mode_is_32bit(vcpu)) {
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@ -43,22 +41,6 @@ static inline void __kvm_skip_instr(struct kvm_vcpu *vcpu)
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write_sysreg_el2(*vcpu_pc(vcpu), SYS_ELR);
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}
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/*
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* Adjust the guest PC on entry, depending on flags provided by EL1
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* for the purpose of emulation (MMIO, sysreg) or exception injection.
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*/
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static inline void __adjust_pc(struct kvm_vcpu *vcpu)
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{
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if (vcpu->arch.flags & KVM_ARM64_PENDING_EXCEPTION) {
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kvm_inject_exception(vcpu);
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vcpu->arch.flags &= ~(KVM_ARM64_PENDING_EXCEPTION |
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KVM_ARM64_EXCEPT_MASK);
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} else if (vcpu->arch.flags & KVM_ARM64_INCREMENT_PC) {
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kvm_skip_instr(vcpu);
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vcpu->arch.flags &= ~KVM_ARM64_INCREMENT_PC;
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}
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}
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/*
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* Skip an instruction while host sysregs are live.
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* Assumes host is always 64-bit.
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@ -4,7 +4,6 @@
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* Author: Marc Zyngier <marc.zyngier@arm.com>
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*/
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#include <hyp/adjust_pc.h>
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#include <hyp/switch.h>
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#include <hyp/sysreg-sr.h>
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@ -201,7 +200,7 @@ int __kvm_vcpu_run(struct kvm_vcpu *vcpu)
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*/
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__debug_save_host_buffers_nvhe(vcpu);
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__adjust_pc(vcpu);
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__kvm_adjust_pc(vcpu);
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/*
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* We must restore the 32-bit state before the sysregs, thanks
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@ -4,7 +4,6 @@
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* Author: Marc Zyngier <marc.zyngier@arm.com>
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*/
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#include <hyp/adjust_pc.h>
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#include <hyp/switch.h>
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#include <linux/arm-smccc.h>
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@ -132,7 +131,7 @@ static int __kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu)
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__load_guest_stage2(vcpu->arch.hw_mmu);
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__activate_traps(vcpu);
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__adjust_pc(vcpu);
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__kvm_adjust_pc(vcpu);
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sysreg_restore_guest_state_vhe(guest_ctxt);
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__debug_switch_to_guest(vcpu);
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