KVM: PPC: PV tlbsync to nop
With our current MMU scheme we don't need to know about the tlbsync instruction. So we can just nop it out. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
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@ -62,6 +62,8 @@
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#define KVM_INST_MTSPR_DAR 0x7c1303a6
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#define KVM_INST_MTSPR_DAR 0x7c1303a6
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#define KVM_INST_MTSPR_DSISR 0x7c1203a6
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#define KVM_INST_MTSPR_DSISR 0x7c1203a6
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#define KVM_INST_TLBSYNC 0x7c00046c
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static bool kvm_patching_worked = true;
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static bool kvm_patching_worked = true;
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static inline void kvm_patch_ins(u32 *inst, u32 new_inst)
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static inline void kvm_patch_ins(u32 *inst, u32 new_inst)
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@ -98,6 +100,11 @@ static void kvm_patch_ins_stw(u32 *inst, long addr, u32 rt)
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kvm_patch_ins(inst, KVM_INST_STW | rt | (addr & 0x0000fffc));
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kvm_patch_ins(inst, KVM_INST_STW | rt | (addr & 0x0000fffc));
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}
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}
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static void kvm_patch_ins_nop(u32 *inst)
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{
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kvm_patch_ins(inst, KVM_INST_NOP);
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}
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static void kvm_map_magic_page(void *data)
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static void kvm_map_magic_page(void *data)
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{
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{
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kvm_hypercall2(KVM_HC_PPC_MAP_MAGIC_PAGE,
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kvm_hypercall2(KVM_HC_PPC_MAP_MAGIC_PAGE,
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@ -166,6 +173,11 @@ static void kvm_check_ins(u32 *inst)
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case KVM_INST_MTSPR_DSISR:
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case KVM_INST_MTSPR_DSISR:
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kvm_patch_ins_stw(inst, magic_var(dsisr), inst_rt);
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kvm_patch_ins_stw(inst, magic_var(dsisr), inst_rt);
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break;
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break;
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/* Nops */
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case KVM_INST_TLBSYNC:
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kvm_patch_ins_nop(inst);
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break;
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}
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}
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switch (_inst) {
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switch (_inst) {
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