diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s_64_mmu_host.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_mmu_host.c | 74 |
1 files changed, 27 insertions, 47 deletions
diff --git a/arch/powerpc/kvm/book3s_64_mmu_host.c b/arch/powerpc/kvm/book3s_64_mmu_host.c index 384179a5002b..fa2f08434ba5 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_host.c +++ b/arch/powerpc/kvm/book3s_64_mmu_host.c @@ -20,7 +20,6 @@ */ #include <linux/kvm_host.h> -#include <linux/hash.h> #include <asm/kvm_ppc.h> #include <asm/kvm_book3s.h> @@ -28,24 +27,9 @@ #include <asm/machdep.h> #include <asm/mmu_context.h> #include <asm/hw_irq.h> +#include "trace.h" #define PTE_SIZE 12 -#define VSID_ALL 0 - -/* #define DEBUG_MMU */ -/* #define DEBUG_SLB */ - -#ifdef DEBUG_MMU -#define dprintk_mmu(a, ...) printk(KERN_INFO a, __VA_ARGS__) -#else -#define dprintk_mmu(a, ...) do { } while(0) -#endif - -#ifdef DEBUG_SLB -#define dprintk_slb(a, ...) printk(KERN_INFO a, __VA_ARGS__) -#else -#define dprintk_slb(a, ...) do { } while(0) -#endif void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte) { @@ -58,34 +42,39 @@ void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte) * a hash, so we don't waste cycles on looping */ static u16 kvmppc_sid_hash(struct kvm_vcpu *vcpu, u64 gvsid) { - return hash_64(gvsid, SID_MAP_BITS); + return (u16)(((gvsid >> (SID_MAP_BITS * 7)) & SID_MAP_MASK) ^ + ((gvsid >> (SID_MAP_BITS * 6)) & SID_MAP_MASK) ^ + ((gvsid >> (SID_MAP_BITS * 5)) & SID_MAP_MASK) ^ + ((gvsid >> (SID_MAP_BITS * 4)) & SID_MAP_MASK) ^ + ((gvsid >> (SID_MAP_BITS * 3)) & SID_MAP_MASK) ^ + ((gvsid >> (SID_MAP_BITS * 2)) & SID_MAP_MASK) ^ + ((gvsid >> (SID_MAP_BITS * 1)) & SID_MAP_MASK) ^ + ((gvsid >> (SID_MAP_BITS * 0)) & SID_MAP_MASK)); } + static struct kvmppc_sid_map *find_sid_vsid(struct kvm_vcpu *vcpu, u64 gvsid) { struct kvmppc_sid_map *map; u16 sid_map_mask; - if (vcpu->arch.msr & MSR_PR) + if (vcpu->arch.shared->msr & MSR_PR) gvsid |= VSID_PR; sid_map_mask = kvmppc_sid_hash(vcpu, gvsid); map = &to_book3s(vcpu)->sid_map[sid_map_mask]; - if (map->guest_vsid == gvsid) { - dprintk_slb("SLB: Searching: 0x%llx -> 0x%llx\n", - gvsid, map->host_vsid); + if (map->valid && (map->guest_vsid == gvsid)) { + trace_kvm_book3s_slb_found(gvsid, map->host_vsid); return map; } map = &to_book3s(vcpu)->sid_map[SID_MAP_MASK - sid_map_mask]; - if (map->guest_vsid == gvsid) { - dprintk_slb("SLB: Searching 0x%llx -> 0x%llx\n", - gvsid, map->host_vsid); + if (map->valid && (map->guest_vsid == gvsid)) { + trace_kvm_book3s_slb_found(gvsid, map->host_vsid); return map; } - dprintk_slb("SLB: Searching %d/%d: 0x%llx -> not found\n", - sid_map_mask, SID_MAP_MASK - sid_map_mask, gvsid); + trace_kvm_book3s_slb_fail(sid_map_mask, gvsid); return NULL; } @@ -101,18 +90,13 @@ int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *orig_pte) struct kvmppc_sid_map *map; /* Get host physical address for gpa */ - hpaddr = gfn_to_pfn(vcpu->kvm, orig_pte->raddr >> PAGE_SHIFT); - if (kvm_is_error_hva(hpaddr)) { + hpaddr = kvmppc_gfn_to_pfn(vcpu, orig_pte->raddr >> PAGE_SHIFT); + if (is_error_pfn(hpaddr)) { printk(KERN_INFO "Couldn't get guest page for gfn %lx!\n", orig_pte->eaddr); return -EINVAL; } hpaddr <<= PAGE_SHIFT; -#if PAGE_SHIFT == 12 -#elif PAGE_SHIFT == 16 - hpaddr |= orig_pte->raddr & 0xf000; -#else -#error Unknown page size -#endif + hpaddr |= orig_pte->raddr & (~0xfffULL & ~PAGE_MASK); /* and write the mapping ea -> hpa into the pt */ vcpu->arch.mmu.esid_to_vsid(vcpu, orig_pte->eaddr >> SID_SHIFT, &vsid); @@ -161,10 +145,7 @@ map_again: } else { struct hpte_cache *pte = kvmppc_mmu_hpte_cache_next(vcpu); - dprintk_mmu("KVM: %c%c Map 0x%lx: [%lx] 0x%lx (0x%llx) -> %lx\n", - ((rflags & HPTE_R_PP) == 3) ? '-' : 'w', - (rflags & HPTE_R_N) ? '-' : 'x', - orig_pte->eaddr, hpteg, va, orig_pte->vpage, hpaddr); + trace_kvm_book3s_64_mmu_map(rflags, hpteg, va, hpaddr, orig_pte); /* The ppc_md code may give us a secondary entry even though we asked for a primary. Fix up. */ @@ -191,7 +172,7 @@ static struct kvmppc_sid_map *create_sid_map(struct kvm_vcpu *vcpu, u64 gvsid) u16 sid_map_mask; static int backwards_map = 0; - if (vcpu->arch.msr & MSR_PR) + if (vcpu->arch.shared->msr & MSR_PR) gvsid |= VSID_PR; /* We might get collisions that trap in preceding order, so let's @@ -219,8 +200,7 @@ static struct kvmppc_sid_map *create_sid_map(struct kvm_vcpu *vcpu, u64 gvsid) map->guest_vsid = gvsid; map->valid = true; - dprintk_slb("SLB: New mapping at %d: 0x%llx -> 0x%llx\n", - sid_map_mask, gvsid, map->host_vsid); + trace_kvm_book3s_slb_map(sid_map_mask, gvsid, map->host_vsid); return map; } @@ -292,7 +272,7 @@ int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr) to_svcpu(vcpu)->slb[slb_index].esid = slb_esid; to_svcpu(vcpu)->slb[slb_index].vsid = slb_vsid; - dprintk_slb("slbmte %#llx, %#llx\n", slb_vsid, slb_esid); + trace_kvm_book3s_slbmte(slb_vsid, slb_esid); return 0; } @@ -306,7 +286,7 @@ void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu) void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu) { kvmppc_mmu_hpte_destroy(vcpu); - __destroy_context(to_book3s(vcpu)->context_id); + __destroy_context(to_book3s(vcpu)->context_id[0]); } int kvmppc_mmu_init(struct kvm_vcpu *vcpu) @@ -317,10 +297,10 @@ int kvmppc_mmu_init(struct kvm_vcpu *vcpu) err = __init_new_context(); if (err < 0) return -1; - vcpu3s->context_id = err; + vcpu3s->context_id[0] = err; - vcpu3s->vsid_max = ((vcpu3s->context_id + 1) << USER_ESID_BITS) - 1; - vcpu3s->vsid_first = vcpu3s->context_id << USER_ESID_BITS; + vcpu3s->vsid_max = ((vcpu3s->context_id[0] + 1) << USER_ESID_BITS) - 1; + vcpu3s->vsid_first = vcpu3s->context_id[0] << USER_ESID_BITS; vcpu3s->vsid_next = vcpu3s->vsid_first; kvmppc_mmu_hpte_init(vcpu); |