From 08b7fa92b9250eab0f493f7721977e781a887b3d Mon Sep 17 00:00:00 2001 From: Liu Yu Date: Tue, 14 Jun 2011 18:34:59 -0500 Subject: [PATCH] KVM: PPC: e500: Stop keeping shadow TLB Instead of a fully separate set of TLB entries, keep just the pfn and dirty status. Signed-off-by: Liu Yu Signed-off-by: Scott Wood Signed-off-by: Alexander Graf --- arch/powerpc/include/asm/kvm_e500.h | 20 +- arch/powerpc/kvm/e500_tlb.c | 317 ++++++++++++---------------- 2 files changed, 154 insertions(+), 183 deletions(-) diff --git a/arch/powerpc/include/asm/kvm_e500.h b/arch/powerpc/include/asm/kvm_e500.h index f181ad1d6045..4a6d77a8b8a0 100644 --- a/arch/powerpc/include/asm/kvm_e500.h +++ b/arch/powerpc/include/asm/kvm_e500.h @@ -29,15 +29,23 @@ struct tlbe{ u32 mas7; }; +#define E500_TLB_VALID 1 +#define E500_TLB_DIRTY 2 + +struct tlbe_priv { + pfn_t pfn; + unsigned int flags; /* E500_TLB_* */ +}; + struct kvmppc_vcpu_e500 { /* Unmodified copy of the guest's TLB. */ - struct tlbe *guest_tlb[E500_TLB_NUM]; - /* TLB that's actually used when the guest is running. */ - struct tlbe *shadow_tlb[E500_TLB_NUM]; + struct tlbe *gtlb_arch[E500_TLB_NUM]; + + /* KVM internal information associated with each guest TLB entry */ + struct tlbe_priv *gtlb_priv[E500_TLB_NUM]; - unsigned int guest_tlb_size[E500_TLB_NUM]; - unsigned int shadow_tlb_size[E500_TLB_NUM]; - unsigned int guest_tlb_nv[E500_TLB_NUM]; + unsigned int gtlb_size[E500_TLB_NUM]; + unsigned int gtlb_nv[E500_TLB_NUM]; u32 host_pid[E500_PID_NUM]; u32 pid[E500_PID_NUM]; diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c index c09e642ee537..9d1e28d443c4 100644 --- a/arch/powerpc/kvm/e500_tlb.c +++ b/arch/powerpc/kvm/e500_tlb.c @@ -41,25 +41,14 @@ void kvmppc_dump_tlbs(struct kvm_vcpu *vcpu) for (tlbsel = 0; tlbsel < 2; tlbsel++) { printk("Guest TLB%d:\n", tlbsel); - for (i = 0; i < vcpu_e500->guest_tlb_size[tlbsel]; i++) { - tlbe = &vcpu_e500->guest_tlb[tlbsel][i]; + for (i = 0; i < vcpu_e500->gtlb_size[tlbsel]; i++) { + tlbe = &vcpu_e500->gtlb_arch[tlbsel][i]; if (tlbe->mas1 & MAS1_VALID) printk(" G[%d][%3d] | %08X | %08X | %08X | %08X |\n", tlbsel, i, tlbe->mas1, tlbe->mas2, tlbe->mas3, tlbe->mas7); } } - - for (tlbsel = 0; tlbsel < 2; tlbsel++) { - printk("Shadow TLB%d:\n", tlbsel); - for (i = 0; i < vcpu_e500->shadow_tlb_size[tlbsel]; i++) { - tlbe = &vcpu_e500->shadow_tlb[tlbsel][i]; - if (tlbe->mas1 & MAS1_VALID) - printk(" S[%d][%3d] | %08X | %08X | %08X | %08X |\n", - tlbsel, i, tlbe->mas1, tlbe->mas2, - tlbe->mas3, tlbe->mas7); - } - } } static inline unsigned int tlb0_get_next_victim( @@ -67,9 +56,9 @@ static inline unsigned int tlb0_get_next_victim( { unsigned int victim; - victim = vcpu_e500->guest_tlb_nv[0]++; - if (unlikely(vcpu_e500->guest_tlb_nv[0] >= KVM_E500_TLB0_WAY_NUM)) - vcpu_e500->guest_tlb_nv[0] = 0; + victim = vcpu_e500->gtlb_nv[0]++; + if (unlikely(vcpu_e500->gtlb_nv[0] >= KVM_E500_TLB0_WAY_NUM)) + vcpu_e500->gtlb_nv[0] = 0; return victim; } @@ -128,10 +117,8 @@ static inline void __write_host_tlbe(struct tlbe *stlbe, uint32_t mas0) } static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500, - int tlbsel, int esel) + int tlbsel, int esel, struct tlbe *stlbe) { - struct tlbe *stlbe = &vcpu_e500->shadow_tlb[tlbsel][esel]; - if (tlbsel == 0) { __write_host_tlbe(stlbe, MAS0_TLBSEL(0) | @@ -141,6 +128,8 @@ static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500, MAS0_TLBSEL(1) | MAS0_ESEL(to_htlb1_esel(esel))); } + trace_kvm_stlb_write(index_of(tlbsel, esel), stlbe->mas1, stlbe->mas2, + stlbe->mas3, stlbe->mas7); } void kvmppc_map_magic(struct kvm_vcpu *vcpu) @@ -178,8 +167,8 @@ static int kvmppc_e500_tlb_index(struct kvmppc_vcpu_e500 *vcpu_e500, int i; /* XXX Replace loop with fancy data structures. */ - for (i = 0; i < vcpu_e500->guest_tlb_size[tlbsel]; i++) { - struct tlbe *tlbe = &vcpu_e500->guest_tlb[tlbsel][i]; + for (i = 0; i < vcpu_e500->gtlb_size[tlbsel]; i++) { + struct tlbe *tlbe = &vcpu_e500->gtlb_arch[tlbsel][i]; unsigned int tid; if (eaddr < get_tlb_eaddr(tlbe)) @@ -204,60 +193,33 @@ static int kvmppc_e500_tlb_index(struct kvmppc_vcpu_e500 *vcpu_e500, return -1; } -static void kvmppc_e500_shadow_release(struct kvmppc_vcpu_e500 *vcpu_e500, - int tlbsel, int esel) +static inline void kvmppc_e500_priv_setup(struct tlbe_priv *priv, + struct tlbe *gtlbe, + pfn_t pfn) { - struct tlbe *stlbe = &vcpu_e500->shadow_tlb[tlbsel][esel]; - unsigned long pfn; - - pfn = stlbe->mas3 >> PAGE_SHIFT; - pfn |= stlbe->mas7 << (32 - PAGE_SHIFT); + priv->pfn = pfn; + priv->flags = E500_TLB_VALID; - if (get_tlb_v(stlbe)) { - if (tlbe_is_writable(stlbe)) - kvm_release_pfn_dirty(pfn); - else - kvm_release_pfn_clean(pfn); - } + if (tlbe_is_writable(gtlbe)) + priv->flags |= E500_TLB_DIRTY; } -static void kvmppc_e500_stlbe_invalidate(struct kvmppc_vcpu_e500 *vcpu_e500, - int tlbsel, int esel) +static inline void kvmppc_e500_priv_release(struct tlbe_priv *priv) { - struct tlbe *stlbe = &vcpu_e500->shadow_tlb[tlbsel][esel]; + if (priv->flags & E500_TLB_VALID) { + if (priv->flags & E500_TLB_DIRTY) + kvm_release_pfn_dirty(priv->pfn); + else + kvm_release_pfn_clean(priv->pfn); - kvmppc_e500_shadow_release(vcpu_e500, tlbsel, esel); - stlbe->mas1 = 0; - trace_kvm_stlb_inval(index_of(tlbsel, esel)); + priv->flags = 0; + } } static void kvmppc_e500_tlb1_invalidate(struct kvmppc_vcpu_e500 *vcpu_e500, - gva_t eaddr, gva_t eend, u32 tid) + int esel) { - unsigned int pid = tid & 0xff; - unsigned int i; - - /* XXX Replace loop with fancy data structures. */ - for (i = 0; i < vcpu_e500->guest_tlb_size[1]; i++) { - struct tlbe *stlbe = &vcpu_e500->shadow_tlb[1][i]; - unsigned int tid; - - if (!get_tlb_v(stlbe)) - continue; - - if (eend < get_tlb_eaddr(stlbe)) - continue; - - if (eaddr > get_tlb_end(stlbe)) - continue; - - tid = get_tlb_tid(stlbe); - if (tid && (tid != pid)) - continue; - - kvmppc_e500_stlbe_invalidate(vcpu_e500, 1, i); - write_host_tlbe(vcpu_e500, 1, i); - } + mtspr(SPRN_MMUCSR0, MMUCSR0_TLB1FI); } static inline void kvmppc_e500_deliver_tlb_miss(struct kvm_vcpu *vcpu, @@ -274,7 +236,7 @@ static inline void kvmppc_e500_deliver_tlb_miss(struct kvm_vcpu *vcpu, tsized = (vcpu_e500->mas4 >> 7) & 0x1f; vcpu_e500->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(victim) - | MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]); + | MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]); vcpu_e500->mas1 = MAS1_VALID | (as ? MAS1_TS : 0) | MAS1_TID(vcpu_e500->pid[pidsel]) | MAS1_TSIZE(tsized); @@ -287,16 +249,35 @@ static inline void kvmppc_e500_deliver_tlb_miss(struct kvm_vcpu *vcpu, vcpu_e500->mas7 = 0; } +static inline void kvmppc_e500_setup_stlbe(struct kvmppc_vcpu_e500 *vcpu_e500, + struct tlbe *gtlbe, int tsize, + struct tlbe_priv *priv, + u64 gvaddr, struct tlbe *stlbe) +{ + pfn_t pfn = priv->pfn; + + /* Force TS=1 IPROT=0 for all guest mappings. */ + stlbe->mas1 = MAS1_TSIZE(tsize) + | MAS1_TID(get_tlb_tid(gtlbe)) | MAS1_TS | MAS1_VALID; + stlbe->mas2 = (gvaddr & MAS2_EPN) + | e500_shadow_mas2_attrib(gtlbe->mas2, + vcpu_e500->vcpu.arch.shared->msr & MSR_PR); + stlbe->mas3 = ((pfn << PAGE_SHIFT) & MAS3_RPN) + | e500_shadow_mas3_attrib(gtlbe->mas3, + vcpu_e500->vcpu.arch.shared->msr & MSR_PR); + stlbe->mas7 = (pfn >> (32 - PAGE_SHIFT)) & MAS7_RPN; +} + + static inline void kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, - u64 gvaddr, gfn_t gfn, struct tlbe *gtlbe, int tlbsel, int esel) + u64 gvaddr, gfn_t gfn, struct tlbe *gtlbe, int tlbsel, int esel, + struct tlbe *stlbe) { struct kvm_memory_slot *slot; - struct tlbe *stlbe; unsigned long pfn, hva; int pfnmap = 0; int tsize = BOOK3E_PAGESZ_4K; - - stlbe = &vcpu_e500->shadow_tlb[tlbsel][esel]; + struct tlbe_priv *priv; /* * Translate guest physical to true physical, acquiring @@ -392,35 +373,25 @@ static inline void kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, } } - /* Drop reference to old page. */ - kvmppc_e500_shadow_release(vcpu_e500, tlbsel, esel); - - /* Force TS=1 IPROT=0 for all guest mappings. */ - stlbe->mas1 = MAS1_TSIZE(tsize) - | MAS1_TID(get_tlb_tid(gtlbe)) | MAS1_TS | MAS1_VALID; - stlbe->mas2 = (gvaddr & MAS2_EPN) - | e500_shadow_mas2_attrib(gtlbe->mas2, - vcpu_e500->vcpu.arch.shared->msr & MSR_PR); - stlbe->mas3 = ((pfn << PAGE_SHIFT) & MAS3_RPN) - | e500_shadow_mas3_attrib(gtlbe->mas3, - vcpu_e500->vcpu.arch.shared->msr & MSR_PR); - stlbe->mas7 = (pfn >> (32 - PAGE_SHIFT)) & MAS7_RPN; + /* Drop old priv and setup new one. */ + priv = &vcpu_e500->gtlb_priv[tlbsel][esel]; + kvmppc_e500_priv_release(priv); + kvmppc_e500_priv_setup(priv, gtlbe, pfn); - trace_kvm_stlb_write(index_of(tlbsel, esel), stlbe->mas1, stlbe->mas2, - stlbe->mas3, stlbe->mas7); + kvmppc_e500_setup_stlbe(vcpu_e500, gtlbe, tsize, priv, gvaddr, stlbe); } /* XXX only map the one-one case, for now use TLB0 */ -static int kvmppc_e500_stlbe_map(struct kvmppc_vcpu_e500 *vcpu_e500, - int tlbsel, int esel) +static int kvmppc_e500_tlb0_map(struct kvmppc_vcpu_e500 *vcpu_e500, + int esel, struct tlbe *stlbe) { struct tlbe *gtlbe; - gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel]; + gtlbe = &vcpu_e500->gtlb_arch[0][esel]; kvmppc_e500_shadow_map(vcpu_e500, get_tlb_eaddr(gtlbe), get_tlb_raddr(gtlbe) >> PAGE_SHIFT, - gtlbe, tlbsel, esel); + gtlbe, 0, esel, stlbe); return esel; } @@ -429,16 +400,16 @@ static int kvmppc_e500_stlbe_map(struct kvmppc_vcpu_e500 *vcpu_e500, * the shadow TLB. */ /* XXX for both one-one and one-to-many , for now use TLB1 */ static int kvmppc_e500_tlb1_map(struct kvmppc_vcpu_e500 *vcpu_e500, - u64 gvaddr, gfn_t gfn, struct tlbe *gtlbe) + u64 gvaddr, gfn_t gfn, struct tlbe *gtlbe, struct tlbe *stlbe) { unsigned int victim; - victim = vcpu_e500->guest_tlb_nv[1]++; + victim = vcpu_e500->gtlb_nv[1]++; - if (unlikely(vcpu_e500->guest_tlb_nv[1] >= tlb1_max_shadow_size())) - vcpu_e500->guest_tlb_nv[1] = 0; + if (unlikely(vcpu_e500->gtlb_nv[1] >= tlb1_max_shadow_size())) + vcpu_e500->gtlb_nv[1] = 0; - kvmppc_e500_shadow_map(vcpu_e500, gvaddr, gfn, gtlbe, 1, victim); + kvmppc_e500_shadow_map(vcpu_e500, gvaddr, gfn, gtlbe, 1, victim, stlbe); return victim; } @@ -449,33 +420,19 @@ static int kvmppc_e500_tlb1_map(struct kvmppc_vcpu_e500 *vcpu_e500, void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode) { if (usermode) { - struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); - int i; - - /* XXX Replace loop with fancy data structures. */ - for (i = 0; i < tlb1_max_shadow_size(); i++) - kvmppc_e500_stlbe_invalidate(vcpu_e500, 1, i); - _tlbil_all(); } } -static int kvmppc_e500_gtlbe_invalidate(struct kvmppc_vcpu_e500 *vcpu_e500, - int tlbsel, int esel) +static inline int kvmppc_e500_gtlbe_invalidate( + struct kvmppc_vcpu_e500 *vcpu_e500, + int tlbsel, int esel) { - struct tlbe *gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel]; + struct tlbe *gtlbe = &vcpu_e500->gtlb_arch[tlbsel][esel]; if (unlikely(get_tlb_iprot(gtlbe))) return -1; - if (tlbsel == 1) { - kvmppc_e500_tlb1_invalidate(vcpu_e500, get_tlb_eaddr(gtlbe), - get_tlb_end(gtlbe), - get_tlb_tid(gtlbe)); - } else { - kvmppc_e500_stlbe_invalidate(vcpu_e500, tlbsel, esel); - } - gtlbe->mas1 = 0; return 0; @@ -486,10 +443,10 @@ int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, ulong value) int esel; if (value & MMUCSR0_TLB0FI) - for (esel = 0; esel < vcpu_e500->guest_tlb_size[0]; esel++) + for (esel = 0; esel < vcpu_e500->gtlb_size[0]; esel++) kvmppc_e500_gtlbe_invalidate(vcpu_e500, 0, esel); if (value & MMUCSR0_TLB1FI) - for (esel = 0; esel < vcpu_e500->guest_tlb_size[1]; esel++) + for (esel = 0; esel < vcpu_e500->gtlb_size[1]; esel++) kvmppc_e500_gtlbe_invalidate(vcpu_e500, 1, esel); _tlbil_all(); @@ -513,7 +470,7 @@ int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb) if (ia) { /* invalidate all entries */ - for (esel = 0; esel < vcpu_e500->guest_tlb_size[tlbsel]; esel++) + for (esel = 0; esel < vcpu_e500->gtlb_size[tlbsel]; esel++) kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel); } else { ea &= 0xfffff000; @@ -537,9 +494,9 @@ int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu) tlbsel = get_tlb_tlbsel(vcpu_e500); esel = get_tlb_esel(vcpu_e500, tlbsel); - gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel]; + gtlbe = &vcpu_e500->gtlb_arch[tlbsel][esel]; vcpu_e500->mas0 &= ~MAS0_NV(~0); - vcpu_e500->mas0 |= MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]); + vcpu_e500->mas0 |= MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]); vcpu_e500->mas1 = gtlbe->mas1; vcpu_e500->mas2 = gtlbe->mas2; vcpu_e500->mas3 = gtlbe->mas3; @@ -562,14 +519,14 @@ int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, int rb) for (tlbsel = 0; tlbsel < 2; tlbsel++) { esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel, pid, as); if (esel >= 0) { - gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel]; + gtlbe = &vcpu_e500->gtlb_arch[tlbsel][esel]; break; } } if (gtlbe) { vcpu_e500->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(esel) - | MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]); + | MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]); vcpu_e500->mas1 = gtlbe->mas1; vcpu_e500->mas2 = gtlbe->mas2; vcpu_e500->mas3 = gtlbe->mas3; @@ -582,7 +539,7 @@ int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, int rb) victim = (tlbsel == 0) ? tlb0_get_next_victim(vcpu_e500) : 0; vcpu_e500->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(victim) - | MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]); + | MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]); vcpu_e500->mas1 = (vcpu_e500->mas6 & MAS6_SPID0) | (vcpu_e500->mas6 & (MAS6_SAS ? MAS1_TS : 0)) | (vcpu_e500->mas4 & MAS4_TSIZED(~0)); @@ -599,23 +556,16 @@ int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, int rb) int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu) { struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); - u64 eaddr; - u64 raddr; - u32 tid; struct tlbe *gtlbe; - int tlbsel, esel, stlbsel, sesel; + int tlbsel, esel; tlbsel = get_tlb_tlbsel(vcpu_e500); esel = get_tlb_esel(vcpu_e500, tlbsel); - gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel]; + gtlbe = &vcpu_e500->gtlb_arch[tlbsel][esel]; - if (get_tlb_v(gtlbe) && tlbsel == 1) { - eaddr = get_tlb_eaddr(gtlbe); - tid = get_tlb_tid(gtlbe); - kvmppc_e500_tlb1_invalidate(vcpu_e500, eaddr, - get_tlb_end(gtlbe), tid); - } + if (get_tlb_v(gtlbe) && tlbsel == 1) + kvmppc_e500_tlb1_invalidate(vcpu_e500, esel); gtlbe->mas1 = vcpu_e500->mas1; gtlbe->mas2 = vcpu_e500->mas2; @@ -627,6 +577,11 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu) /* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */ if (tlbe_is_host_safe(vcpu, gtlbe)) { + struct tlbe stlbe; + int stlbsel, sesel; + u64 eaddr; + u64 raddr; + switch (tlbsel) { case 0: /* TLB0 */ @@ -634,7 +589,7 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu) gtlbe->mas1 |= MAS1_TSIZE(BOOK3E_PAGESZ_4K); stlbsel = 0; - sesel = kvmppc_e500_stlbe_map(vcpu_e500, 0, esel); + sesel = kvmppc_e500_tlb0_map(vcpu_e500, esel, &stlbe); break; @@ -649,13 +604,13 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu) * are mapped on the fly. */ stlbsel = 1; sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr, - raddr >> PAGE_SHIFT, gtlbe); + raddr >> PAGE_SHIFT, gtlbe, &stlbe); break; default: BUG(); } - write_host_tlbe(vcpu_e500, stlbsel, sesel); + write_host_tlbe(vcpu_e500, stlbsel, sesel, &stlbe); } kvmppc_set_exit_type(vcpu, EMULATED_TLBWE_EXITS); @@ -695,7 +650,7 @@ gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int index, { struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); struct tlbe *gtlbe = - &vcpu_e500->guest_tlb[tlbsel_of(index)][esel_of(index)]; + &vcpu_e500->gtlb_arch[tlbsel_of(index)][esel_of(index)]; u64 pgmask = get_tlb_bytes(gtlbe) - 1; return get_tlb_raddr(gtlbe) | (eaddr & pgmask); @@ -703,38 +658,36 @@ gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int index, void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu) { - struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); - int tlbsel, i; - - for (tlbsel = 0; tlbsel < 2; tlbsel++) - for (i = 0; i < vcpu_e500->guest_tlb_size[tlbsel]; i++) - kvmppc_e500_shadow_release(vcpu_e500, tlbsel, i); - - /* discard all guest mapping */ - _tlbil_all(); } void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr, unsigned int index) { struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); + struct tlbe_priv *priv; + struct tlbe *gtlbe, stlbe; int tlbsel = tlbsel_of(index); int esel = esel_of(index); int stlbsel, sesel; + gtlbe = &vcpu_e500->gtlb_arch[tlbsel][esel]; + switch (tlbsel) { case 0: stlbsel = 0; sesel = esel; + priv = &vcpu_e500->gtlb_priv[stlbsel][sesel]; + + kvmppc_e500_setup_stlbe(vcpu_e500, gtlbe, BOOK3E_PAGESZ_4K, + priv, eaddr, &stlbe); break; case 1: { gfn_t gfn = gpaddr >> PAGE_SHIFT; - struct tlbe *gtlbe - = &vcpu_e500->guest_tlb[tlbsel][esel]; stlbsel = 1; - sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr, gfn, gtlbe); + sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr, gfn, + gtlbe, &stlbe); break; } @@ -742,7 +695,8 @@ void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr, BUG(); break; } - write_host_tlbe(vcpu_e500, stlbsel, sesel); + + write_host_tlbe(vcpu_e500, stlbsel, sesel, &stlbe); } int kvmppc_e500_tlb_search(struct kvm_vcpu *vcpu, @@ -773,14 +727,14 @@ void kvmppc_e500_tlb_setup(struct kvmppc_vcpu_e500 *vcpu_e500) struct tlbe *tlbe; /* Insert large initial mapping for guest. */ - tlbe = &vcpu_e500->guest_tlb[1][0]; + tlbe = &vcpu_e500->gtlb_arch[1][0]; tlbe->mas1 = MAS1_VALID | MAS1_TSIZE(BOOK3E_PAGESZ_256M); tlbe->mas2 = 0; tlbe->mas3 = E500_TLB_SUPER_PERM_MASK; tlbe->mas7 = 0; /* 4K map for serial output. Used by kernel wrapper. */ - tlbe = &vcpu_e500->guest_tlb[1][1]; + tlbe = &vcpu_e500->gtlb_arch[1][1]; tlbe->mas1 = MAS1_VALID | MAS1_TSIZE(BOOK3E_PAGESZ_4K); tlbe->mas2 = (0xe0004500 & 0xFFFFF000) | MAS2_I | MAS2_G; tlbe->mas3 = (0xe0004500 & 0xFFFFF000) | E500_TLB_SUPER_PERM_MASK; @@ -791,52 +745,61 @@ int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500) { tlb1_entry_num = mfspr(SPRN_TLB1CFG) & 0xFFF; - vcpu_e500->guest_tlb_size[0] = KVM_E500_TLB0_SIZE; - vcpu_e500->guest_tlb[0] = + vcpu_e500->gtlb_size[0] = KVM_E500_TLB0_SIZE; + vcpu_e500->gtlb_arch[0] = kzalloc(sizeof(struct tlbe) * KVM_E500_TLB0_SIZE, GFP_KERNEL); - if (vcpu_e500->guest_tlb[0] == NULL) + if (vcpu_e500->gtlb_arch[0] == NULL) goto err_out; - vcpu_e500->shadow_tlb_size[0] = KVM_E500_TLB0_SIZE; - vcpu_e500->shadow_tlb[0] = - kzalloc(sizeof(struct tlbe) * KVM_E500_TLB0_SIZE, GFP_KERNEL); - if (vcpu_e500->shadow_tlb[0] == NULL) - goto err_out_guest0; - - vcpu_e500->guest_tlb_size[1] = KVM_E500_TLB1_SIZE; - vcpu_e500->guest_tlb[1] = + vcpu_e500->gtlb_size[1] = KVM_E500_TLB1_SIZE; + vcpu_e500->gtlb_arch[1] = kzalloc(sizeof(struct tlbe) * KVM_E500_TLB1_SIZE, GFP_KERNEL); - if (vcpu_e500->guest_tlb[1] == NULL) - goto err_out_shadow0; + if (vcpu_e500->gtlb_arch[1] == NULL) + goto err_out_guest0; - vcpu_e500->shadow_tlb_size[1] = tlb1_entry_num; - vcpu_e500->shadow_tlb[1] = - kzalloc(sizeof(struct tlbe) * tlb1_entry_num, GFP_KERNEL); - if (vcpu_e500->shadow_tlb[1] == NULL) + vcpu_e500->gtlb_priv[0] = (struct tlbe_priv *) + kzalloc(sizeof(struct tlbe_priv) * KVM_E500_TLB0_SIZE, GFP_KERNEL); + if (vcpu_e500->gtlb_priv[0] == NULL) goto err_out_guest1; + vcpu_e500->gtlb_priv[1] = (struct tlbe_priv *) + kzalloc(sizeof(struct tlbe_priv) * KVM_E500_TLB1_SIZE, GFP_KERNEL); + + if (vcpu_e500->gtlb_priv[1] == NULL) + goto err_out_priv0; /* Init TLB configuration register */ vcpu_e500->tlb0cfg = mfspr(SPRN_TLB0CFG) & ~0xfffUL; - vcpu_e500->tlb0cfg |= vcpu_e500->guest_tlb_size[0]; + vcpu_e500->tlb0cfg |= vcpu_e500->gtlb_size[0]; vcpu_e500->tlb1cfg = mfspr(SPRN_TLB1CFG) & ~0xfffUL; - vcpu_e500->tlb1cfg |= vcpu_e500->guest_tlb_size[1]; + vcpu_e500->tlb1cfg |= vcpu_e500->gtlb_size[1]; return 0; +err_out_priv0: + kfree(vcpu_e500->gtlb_priv[0]); err_out_guest1: - kfree(vcpu_e500->guest_tlb[1]); -err_out_shadow0: - kfree(vcpu_e500->shadow_tlb[0]); + kfree(vcpu_e500->gtlb_arch[1]); err_out_guest0: - kfree(vcpu_e500->guest_tlb[0]); + kfree(vcpu_e500->gtlb_arch[0]); err_out: return -1; } void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500) { - kfree(vcpu_e500->shadow_tlb[1]); - kfree(vcpu_e500->guest_tlb[1]); - kfree(vcpu_e500->shadow_tlb[0]); - kfree(vcpu_e500->guest_tlb[0]); + int stlbsel, i; + + /* release all privs */ + for (stlbsel = 0; stlbsel < 2; stlbsel++) + for (i = 0; i < vcpu_e500->gtlb_size[stlbsel]; i++) { + struct tlbe_priv *priv = + &vcpu_e500->gtlb_priv[stlbsel][i]; + kvmppc_e500_priv_release(priv); + } + + /* discard all guest mapping */ + _tlbil_all(); + + kfree(vcpu_e500->gtlb_arch[1]); + kfree(vcpu_e500->gtlb_arch[0]); } -- 2.20.1