diff options
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s_64_asm.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/kvm_host.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/asm-offsets.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_exports.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_interrupts.S | 25 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_rmhandlers.S | 18 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_slb.S | 4 |
9 files changed, 34 insertions, 21 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h index f192017d799..c91be0ff023 100644 --- a/arch/powerpc/include/asm/kvm_book3s.h +++ b/arch/powerpc/include/asm/kvm_book3s.h @@ -121,6 +121,7 @@ extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat, extern u32 kvmppc_trampoline_lowmem; extern u32 kvmppc_trampoline_enter; +extern void kvmppc_rmcall(ulong srr0, ulong srr1); static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu) { diff --git a/arch/powerpc/include/asm/kvm_book3s_64_asm.h b/arch/powerpc/include/asm/kvm_book3s_64_asm.h index fca9404c1a7..183461b4840 100644 --- a/arch/powerpc/include/asm/kvm_book3s_64_asm.h +++ b/arch/powerpc/include/asm/kvm_book3s_64_asm.h @@ -69,7 +69,6 @@ struct kvmppc_book3s_shadow_vcpu { ulong scratch0; ulong scratch1; ulong vmhandler; - ulong rmhandler; }; #endif /*__ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index d615fa8a141..f7215e622df 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -167,6 +167,7 @@ struct kvm_vcpu_arch { ulong trampoline_lowmem; ulong trampoline_enter; ulong highmem_handler; + ulong rmcall; ulong host_paca_phys; struct kvmppc_mmu mmu; #endif diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 1501e77c980..ee9935442f0 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -214,8 +214,6 @@ int main(void) DEFINE(PACA_KVM_HOST_R2, offsetof(struct paca_struct, shadow_vcpu.host_r2)); DEFINE(PACA_KVM_VMHANDLER, offsetof(struct paca_struct, shadow_vcpu.vmhandler)); - DEFINE(PACA_KVM_RMHANDLER, offsetof(struct paca_struct, - shadow_vcpu.rmhandler)); DEFINE(PACA_KVM_SCRATCH0, offsetof(struct paca_struct, shadow_vcpu.scratch0)); DEFINE(PACA_KVM_SCRATCH1, offsetof(struct paca_struct, @@ -438,6 +436,7 @@ int main(void) DEFINE(VCPU_TRAMPOLINE_LOWMEM, offsetof(struct kvm_vcpu, arch.trampoline_lowmem)); DEFINE(VCPU_TRAMPOLINE_ENTER, offsetof(struct kvm_vcpu, arch.trampoline_enter)); DEFINE(VCPU_HIGHMEM_HANDLER, offsetof(struct kvm_vcpu, arch.highmem_handler)); + DEFINE(VCPU_RMCALL, offsetof(struct kvm_vcpu, arch.rmcall)); DEFINE(VCPU_HFLAGS, offsetof(struct kvm_vcpu, arch.hflags)); #else DEFINE(VCPU_CR, offsetof(struct kvm_vcpu, arch.cr)); diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 3e06eae3f2c..13173922b67 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -919,6 +919,7 @@ struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) vcpu->arch.trampoline_lowmem = kvmppc_trampoline_lowmem; vcpu->arch.trampoline_enter = kvmppc_trampoline_enter; vcpu->arch.highmem_handler = (ulong)kvmppc_handler_highmem; + vcpu->arch.rmcall = *(ulong*)kvmppc_rmcall; vcpu->arch.shadow_msr = MSR_USER64; diff --git a/arch/powerpc/kvm/book3s_64_exports.c b/arch/powerpc/kvm/book3s_64_exports.c index 5b2db38ed86..99b07125c52 100644 --- a/arch/powerpc/kvm/book3s_64_exports.c +++ b/arch/powerpc/kvm/book3s_64_exports.c @@ -22,3 +22,4 @@ EXPORT_SYMBOL_GPL(kvmppc_trampoline_enter); EXPORT_SYMBOL_GPL(kvmppc_trampoline_lowmem); +EXPORT_SYMBOL_GPL(kvmppc_rmcall); diff --git a/arch/powerpc/kvm/book3s_64_interrupts.S b/arch/powerpc/kvm/book3s_64_interrupts.S index 3c0ba551307..33aef5345f6 100644 --- a/arch/powerpc/kvm/book3s_64_interrupts.S +++ b/arch/powerpc/kvm/book3s_64_interrupts.S @@ -95,17 +95,14 @@ kvm_start_entry: ld r3, VCPU_HIGHMEM_HANDLER(r4) std r3, PACA_KVM_VMHANDLER(r13) - ld r3, VCPU_TRAMPOLINE_ENTER(r4) - std r3, PACA_KVM_RMHANDLER(r13) - kvm_start_lightweight: ld r9, VCPU_PC(r4) /* r9 = vcpu->arch.pc */ ld r10, VCPU_SHADOW_MSR(r4) /* r10 = vcpu->arch.shadow_msr */ /* Load some guest state in the respective registers */ - ld r3, VCPU_CTR(r4) /* r3 = vcpu->arch.ctr */ - mtctr r3 /* CTR = r3 */ + ld r5, VCPU_CTR(r4) /* r5 = vcpu->arch.ctr */ + /* will be swapped in by rmcall */ ld r3, VCPU_LR(r4) /* r3 = vcpu->arch.lr */ mtlr r3 /* LR = r3 */ @@ -131,22 +128,14 @@ kvm_start_lightweight: no_dcbz32_on: - /* This sets the Magic value for the trampoline */ - - /* XXX this needs to move into a safe function, so we can - be sure we don't get any interrupts */ - - li r11, 1 - stb r11, PACA_KVM_IN_GUEST(r13) - - ld r3, PACA_KVM_RMHANDLER(r13) - mtsrr0 r3 + ld r6, VCPU_RMCALL(r4) + mtctr r6 - LOAD_REG_IMMEDIATE(r3, MSR_KERNEL & ~(MSR_IR | MSR_DR)) - mtsrr1 r3 + ld r3, VCPU_TRAMPOLINE_ENTER(r4) + LOAD_REG_IMMEDIATE(r4, MSR_KERNEL & ~(MSR_IR | MSR_DR)) /* Jump to SLB patching handlder and into our guest */ - RFI + bctr /* * This is the handler in module memory. It gets jumped at from the diff --git a/arch/powerpc/kvm/book3s_64_rmhandlers.S b/arch/powerpc/kvm/book3s_64_rmhandlers.S index 9ad1c2645d6..e7091c9459a 100644 --- a/arch/powerpc/kvm/book3s_64_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_64_rmhandlers.S @@ -140,6 +140,24 @@ kvmppc_handler_lowmem_trampoline: blr kvmppc_handler_lowmem_trampoline_end: +/* + * Call a function in real mode + * + * Input Registers: + * + * R3 = function + * R4 = MSR + * R5 = CTR + * + */ +_GLOBAL(kvmppc_rmcall) + mtmsr r4 /* Disable relocation, so mtsrr + doesn't get interrupted */ + mtctr r5 + mtsrr0 r3 + mtsrr1 r4 + RFI + .global kvmppc_trampoline_lowmem kvmppc_trampoline_lowmem: .long kvmppc_handler_lowmem_trampoline - _stext diff --git a/arch/powerpc/kvm/book3s_64_slb.S b/arch/powerpc/kvm/book3s_64_slb.S index d07b88617b2..35b76272218 100644 --- a/arch/powerpc/kvm/book3s_64_slb.S +++ b/arch/powerpc/kvm/book3s_64_slb.S @@ -63,6 +63,10 @@ kvmppc_handler_trampoline_enter: mtsrr0 r9 mtsrr1 r10 + /* Activate guest mode, so faults get handled by KVM */ + li r11, KVM_GUEST_MODE_GUEST + stb r11, PACA_KVM_IN_GUEST(r13) + /* Remove LPAR shadow entries */ #if SLB_NUM_BOLTED == 3 |