diff options
Diffstat (limited to 'arch/powerpc')
-rw-r--r-- | arch/powerpc/kvm/Makefile | 3 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_64_vio.c | 52 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_64_vio_hv.c | 8 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_hv_rmhandlers.S | 4 | ||||
-rw-r--r-- | arch/powerpc/kvm/powerpc.c | 3 |
5 files changed, 62 insertions, 8 deletions
diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile index 7f7b6d8..eba0bea 100644 --- a/arch/powerpc/kvm/Makefile +++ b/arch/powerpc/kvm/Makefile @@ -8,7 +8,8 @@ ccflags-y := -Ivirt/kvm -Iarch/powerpc/kvm KVM := ../../../virt/kvm common-objs-y = $(KVM)/kvm_main.o $(KVM)/coalesced_mmio.o \ - $(KVM)/eventfd.o $(KVM)/vfio.o + $(KVM)/eventfd.o +common-objs-$(CONFIG_KVM_VFIO) += $(KVM)/vfio.o CFLAGS_e500_mmu.o := -I. CFLAGS_e500_mmu_host.o := -I. diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c index 8297004..18cf6d1 100644 --- a/arch/powerpc/kvm/book3s_64_vio.c +++ b/arch/powerpc/kvm/book3s_64_vio.c @@ -209,6 +209,32 @@ fail: return ret; } +long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, + unsigned long ioba, unsigned long tce) +{ + struct kvmppc_spapr_tce_table *stt = kvmppc_find_table(vcpu, liobn); + long ret; + + /* udbg_printf("H_PUT_TCE(): liobn=0x%lx ioba=0x%lx, tce=0x%lx\n", */ + /* liobn, ioba, tce); */ + + if (!stt) + return H_TOO_HARD; + + ret = kvmppc_ioba_validate(stt, ioba, 1); + if (ret != H_SUCCESS) + return ret; + + ret = kvmppc_tce_validate(stt, tce); + if (ret != H_SUCCESS) + return ret; + + kvmppc_tce_put(stt, ioba >> stt->page_shift, tce); + + return H_SUCCESS; +} +EXPORT_SYMBOL_GPL(kvmppc_h_put_tce); + long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, unsigned long liobn, unsigned long ioba, unsigned long tce_list, unsigned long npages) @@ -264,3 +290,29 @@ unlock_exit: return ret; } EXPORT_SYMBOL_GPL(kvmppc_h_put_tce_indirect); + +long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, + unsigned long liobn, unsigned long ioba, + unsigned long tce_value, unsigned long npages) +{ + struct kvmppc_spapr_tce_table *stt; + long i, ret; + + stt = kvmppc_find_table(vcpu, liobn); + if (!stt) + return H_TOO_HARD; + + ret = kvmppc_ioba_validate(stt, ioba, npages); + if (ret != H_SUCCESS) + return ret; + + /* Check permission bits only to allow userspace poison TCE for debug */ + if (tce_value & (TCE_PCI_WRITE | TCE_PCI_READ)) + return H_PARAMETER; + + for (i = 0; i < npages; ++i, ioba += (1ULL << stt->page_shift)) + kvmppc_tce_put(stt, ioba >> stt->page_shift, tce_value); + + return H_SUCCESS; +} +EXPORT_SYMBOL_GPL(kvmppc_h_stuff_tce); diff --git a/arch/powerpc/kvm/book3s_64_vio_hv.c b/arch/powerpc/kvm/book3s_64_vio_hv.c index f88b859..d461c44 100644 --- a/arch/powerpc/kvm/book3s_64_vio_hv.c +++ b/arch/powerpc/kvm/book3s_64_vio_hv.c @@ -180,8 +180,8 @@ long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa, EXPORT_SYMBOL_GPL(kvmppc_gpa_to_ua); #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE -long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, - unsigned long ioba, unsigned long tce) +long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, + unsigned long ioba, unsigned long tce) { struct kvmppc_spapr_tce_table *stt = kvmppc_find_table(vcpu, liobn); long ret; @@ -204,7 +204,6 @@ long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, return H_SUCCESS; } -EXPORT_SYMBOL_GPL(kvmppc_h_put_tce); static long kvmppc_rm_ua_to_hpa(struct kvm_vcpu *vcpu, unsigned long ua, unsigned long *phpa) @@ -296,7 +295,7 @@ unlock_exit: return ret; } -long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, +long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, unsigned long liobn, unsigned long ioba, unsigned long tce_value, unsigned long npages) { @@ -320,7 +319,6 @@ long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, return H_SUCCESS; } -EXPORT_SYMBOL_GPL(kvmppc_h_stuff_tce); long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, unsigned long ioba) diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index 62ea3c6..e571ad2 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -1942,7 +1942,7 @@ hcall_real_table: .long DOTSYM(kvmppc_h_clear_ref) - hcall_real_table .long DOTSYM(kvmppc_h_protect) - hcall_real_table .long DOTSYM(kvmppc_h_get_tce) - hcall_real_table - .long DOTSYM(kvmppc_h_put_tce) - hcall_real_table + .long DOTSYM(kvmppc_rm_h_put_tce) - hcall_real_table .long 0 /* 0x24 - H_SET_SPRG0 */ .long DOTSYM(kvmppc_h_set_dabr) - hcall_real_table .long 0 /* 0x2c */ @@ -2020,7 +2020,7 @@ hcall_real_table: .long 0 /* 0x12c */ .long 0 /* 0x130 */ .long DOTSYM(kvmppc_h_set_xdabr) - hcall_real_table - .long DOTSYM(kvmppc_h_stuff_tce) - hcall_real_table + .long DOTSYM(kvmppc_rm_h_stuff_tce) - hcall_real_table .long DOTSYM(kvmppc_rm_h_put_tce_indirect) - hcall_real_table .long 0 /* 0x140 */ .long 0 /* 0x144 */ diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 19aa59b..6a68730 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -96,6 +96,9 @@ int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu) * so we don't miss a request because the requester sees * OUTSIDE_GUEST_MODE and assumes we'll be checking requests * before next entering the guest (and thus doesn't IPI). + * This also orders the write to mode from any reads + * to the page tables done while the VCPU is running. + * Please see the comment in kvm_flush_remote_tlbs. */ smp_mb(); |