powerpc/mm: Convert virtual address to vpn
This patch convert different functions to take virtual page number
instead of virtual address. Virtual page number is virtual address
shifted right by VPN_SHIFT (12) bits. This enable us to have an
address range of upto 76 bits.
Reviewed-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kvm/book3s_32_mmu_host.c b/arch/powerpc/kvm/book3s_32_mmu_host.c
index 837f13e..00aa612 100644
--- a/arch/powerpc/kvm/book3s_32_mmu_host.c
+++ b/arch/powerpc/kvm/book3s_32_mmu_host.c
@@ -141,7 +141,7 @@
int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *orig_pte)
{
pfn_t hpaddr;
- u64 va;
+ u64 vpn;
u64 vsid;
struct kvmppc_sid_map *map;
volatile u32 *pteg;
@@ -173,7 +173,7 @@
BUG_ON(!map);
vsid = map->host_vsid;
- va = (vsid << SID_SHIFT) | (eaddr & ~ESID_MASK);
+ vpn = (vsid << (SID_SHIFT - VPN_SHIFT)) | ((eaddr & ~ESID_MASK) >> VPN_SHIFT)
next_pteg:
if (rr == 16) {
@@ -244,11 +244,11 @@
dprintk_mmu("KVM: %c%c Map 0x%llx: [%lx] 0x%llx (0x%llx) -> %lx\n",
orig_pte->may_write ? 'w' : '-',
orig_pte->may_execute ? 'x' : '-',
- orig_pte->eaddr, (ulong)pteg, va,
+ orig_pte->eaddr, (ulong)pteg, vpn,
orig_pte->vpage, hpaddr);
pte->slot = (ulong)&pteg[rr];
- pte->host_va = va;
+ pte->host_vpn = vpn;
pte->pte = *orig_pte;
pte->pfn = hpaddr >> PAGE_SHIFT;
diff --git a/arch/powerpc/kvm/book3s_64_mmu_host.c b/arch/powerpc/kvm/book3s_64_mmu_host.c
index 0688b6b..4d72f9e 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_host.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_host.c
@@ -33,7 +33,7 @@
void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte)
{
- ppc_md.hpte_invalidate(pte->slot, pte->host_va,
+ ppc_md.hpte_invalidate(pte->slot, pte->host_vpn,
MMU_PAGE_4K, MMU_SEGSIZE_256M,
false);
}
@@ -80,8 +80,9 @@
int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *orig_pte)
{
+ unsigned long vpn;
pfn_t hpaddr;
- ulong hash, hpteg, va;
+ ulong hash, hpteg;
u64 vsid;
int ret;
int rflags = 0x192;
@@ -117,7 +118,7 @@
}
vsid = map->host_vsid;
- va = hpt_va(orig_pte->eaddr, vsid, MMU_SEGSIZE_256M);
+ vpn = hpt_vpn(orig_pte->eaddr, vsid, MMU_SEGSIZE_256M);
if (!orig_pte->may_write)
rflags |= HPTE_R_PP;
@@ -129,7 +130,7 @@
else
kvmppc_mmu_flush_icache(hpaddr >> PAGE_SHIFT);
- hash = hpt_hash(va, PTE_SIZE, MMU_SEGSIZE_256M);
+ hash = hpt_hash(vpn, PTE_SIZE, MMU_SEGSIZE_256M);
map_again:
hpteg = ((hash & htab_hash_mask) * HPTES_PER_GROUP);
@@ -141,7 +142,8 @@
goto out;
}
- ret = ppc_md.hpte_insert(hpteg, va, hpaddr, rflags, vflags, MMU_PAGE_4K, MMU_SEGSIZE_256M);
+ ret = ppc_md.hpte_insert(hpteg, vpn, hpaddr, rflags, vflags,
+ MMU_PAGE_4K, MMU_SEGSIZE_256M);
if (ret < 0) {
/* If we couldn't map a primary PTE, try a secondary */
@@ -152,7 +154,8 @@
} else {
struct hpte_cache *pte = kvmppc_mmu_hpte_cache_next(vcpu);
- trace_kvm_book3s_64_mmu_map(rflags, hpteg, va, hpaddr, orig_pte);
+ trace_kvm_book3s_64_mmu_map(rflags, hpteg,
+ vpn, hpaddr, orig_pte);
/* The ppc_md code may give us a secondary entry even though we
asked for a primary. Fix up. */
@@ -162,7 +165,7 @@
}
pte->slot = hpteg + (ret & 7);
- pte->host_va = va;
+ pte->host_vpn = vpn;
pte->pte = *orig_pte;
pte->pfn = hpaddr >> PAGE_SHIFT;
diff --git a/arch/powerpc/kvm/trace.h b/arch/powerpc/kvm/trace.h
index 877186b..ddb6a21 100644
--- a/arch/powerpc/kvm/trace.h
+++ b/arch/powerpc/kvm/trace.h
@@ -189,7 +189,7 @@
TP_ARGS(pte),
TP_STRUCT__entry(
- __field( u64, host_va )
+ __field( u64, host_vpn )
__field( u64, pfn )
__field( ulong, eaddr )
__field( u64, vpage )
@@ -198,7 +198,7 @@
),
TP_fast_assign(
- __entry->host_va = pte->host_va;
+ __entry->host_vpn = pte->host_vpn;
__entry->pfn = pte->pfn;
__entry->eaddr = pte->pte.eaddr;
__entry->vpage = pte->pte.vpage;
@@ -208,8 +208,8 @@
(pte->pte.may_execute ? 0x1 : 0);
),
- TP_printk("Map: hva=%llx pfn=%llx ea=%lx vp=%llx ra=%lx [%x]",
- __entry->host_va, __entry->pfn, __entry->eaddr,
+ TP_printk("Map: hvpn=%llx pfn=%llx ea=%lx vp=%llx ra=%lx [%x]",
+ __entry->host_vpn, __entry->pfn, __entry->eaddr,
__entry->vpage, __entry->raddr, __entry->flags)
);
@@ -218,7 +218,7 @@
TP_ARGS(pte),
TP_STRUCT__entry(
- __field( u64, host_va )
+ __field( u64, host_vpn )
__field( u64, pfn )
__field( ulong, eaddr )
__field( u64, vpage )
@@ -227,7 +227,7 @@
),
TP_fast_assign(
- __entry->host_va = pte->host_va;
+ __entry->host_vpn = pte->host_vpn;
__entry->pfn = pte->pfn;
__entry->eaddr = pte->pte.eaddr;
__entry->vpage = pte->pte.vpage;
@@ -238,7 +238,7 @@
),
TP_printk("Flush: hva=%llx pfn=%llx ea=%lx vp=%llx ra=%lx [%x]",
- __entry->host_va, __entry->pfn, __entry->eaddr,
+ __entry->host_vpn, __entry->pfn, __entry->eaddr,
__entry->vpage, __entry->raddr, __entry->flags)
);