summaryrefslogtreecommitdiff
path: root/arch/powerpc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/include/asm/kvm_book3s.h5
-rw-r--r--arch/powerpc/kvm/book3s_64_mmu_hv.c36
-rw-r--r--arch/powerpc/kvm/book3s_hv_rm_mmu.c27
3 files changed, 45 insertions, 23 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h
index 36fcf41..fea768f 100644
--- a/arch/powerpc/include/asm/kvm_book3s.h
+++ b/arch/powerpc/include/asm/kvm_book3s.h
@@ -157,8 +157,9 @@ extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr);
extern long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
long pte_index, unsigned long pteh, unsigned long ptel);
-extern long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
- long pte_index, unsigned long pteh, unsigned long ptel);
+extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
+ long pte_index, unsigned long pteh, unsigned long ptel,
+ pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
extern long kvmppc_hv_get_dirty_log(struct kvm *kvm,
struct kvm_memory_slot *memslot, unsigned long *map);
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index 2a89a36..6ee6516 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -41,6 +41,10 @@
/* Power architecture requires HPT is at least 256kB */
#define PPC_MIN_HPT_ORDER 18
+static long kvmppc_virtmode_do_h_enter(struct kvm *kvm, unsigned long flags,
+ long pte_index, unsigned long pteh,
+ unsigned long ptel, unsigned long *pte_idx_ret);
+
long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp)
{
unsigned long hpt;
@@ -185,6 +189,7 @@ void kvmppc_map_vrma(struct kvm_vcpu *vcpu, struct kvm_memory_slot *memslot,
unsigned long addr, hash;
unsigned long psize;
unsigned long hp0, hp1;
+ unsigned long idx_ret;
long ret;
struct kvm *kvm = vcpu->kvm;
@@ -216,7 +221,8 @@ void kvmppc_map_vrma(struct kvm_vcpu *vcpu, struct kvm_memory_slot *memslot,
hash = (hash << 3) + 7;
hp_v = hp0 | ((addr >> 16) & ~0x7fUL);
hp_r = hp1 | addr;
- ret = kvmppc_virtmode_h_enter(vcpu, H_EXACT, hash, hp_v, hp_r);
+ ret = kvmppc_virtmode_do_h_enter(kvm, H_EXACT, hash, hp_v, hp_r,
+ &idx_ret);
if (ret != H_SUCCESS) {
pr_err("KVM: map_vrma at %lx failed, ret=%ld\n",
addr, ret);
@@ -354,15 +360,10 @@ static long kvmppc_get_guest_page(struct kvm *kvm, unsigned long gfn,
return err;
}
-/*
- * We come here on a H_ENTER call from the guest when we are not
- * using mmu notifiers and we don't have the requested page pinned
- * already.
- */
-long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
- long pte_index, unsigned long pteh, unsigned long ptel)
+long kvmppc_virtmode_do_h_enter(struct kvm *kvm, unsigned long flags,
+ long pte_index, unsigned long pteh,
+ unsigned long ptel, unsigned long *pte_idx_ret)
{
- struct kvm *kvm = vcpu->kvm;
unsigned long psize, gpa, gfn;
struct kvm_memory_slot *memslot;
long ret;
@@ -390,8 +391,8 @@ long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
do_insert:
/* Protect linux PTE lookup from page table destruction */
rcu_read_lock_sched(); /* this disables preemption too */
- vcpu->arch.pgdir = current->mm->pgd;
- ret = kvmppc_h_enter(vcpu, flags, pte_index, pteh, ptel);
+ ret = kvmppc_do_h_enter(kvm, flags, pte_index, pteh, ptel,
+ current->mm->pgd, false, pte_idx_ret);
rcu_read_unlock_sched();
if (ret == H_TOO_HARD) {
/* this can't happen */
@@ -402,6 +403,19 @@ long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
}
+/*
+ * We come here on a H_ENTER call from the guest when we are not
+ * using mmu notifiers and we don't have the requested page pinned
+ * already.
+ */
+long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
+ long pte_index, unsigned long pteh,
+ unsigned long ptel)
+{
+ return kvmppc_virtmode_do_h_enter(vcpu->kvm, flags, pte_index,
+ pteh, ptel, &vcpu->arch.gpr[4]);
+}
+
static struct kvmppc_slb *kvmppc_mmu_book3s_hv_find_slbe(struct kvm_vcpu *vcpu,
gva_t eaddr)
{
diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
index 5e06e31..362dffe 100644
--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
@@ -103,14 +103,14 @@ static void remove_revmap_chain(struct kvm *kvm, long pte_index,
unlock_rmap(rmap);
}
-static pte_t lookup_linux_pte(struct kvm_vcpu *vcpu, unsigned long hva,
+static pte_t lookup_linux_pte(pgd_t *pgdir, unsigned long hva,
int writing, unsigned long *pte_sizep)
{
pte_t *ptep;
unsigned long ps = *pte_sizep;
unsigned int shift;
- ptep = find_linux_pte_or_hugepte(vcpu->arch.pgdir, hva, &shift);
+ ptep = find_linux_pte_or_hugepte(pgdir, hva, &shift);
if (!ptep)
return __pte(0);
if (shift)
@@ -130,10 +130,10 @@ static inline void unlock_hpte(unsigned long *hpte, unsigned long hpte_v)
hpte[0] = hpte_v;
}
-long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
- long pte_index, unsigned long pteh, unsigned long ptel)
+long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
+ long pte_index, unsigned long pteh, unsigned long ptel,
+ pgd_t *pgdir, bool realmode, unsigned long *pte_idx_ret)
{
- struct kvm *kvm = vcpu->kvm;
unsigned long i, pa, gpa, gfn, psize;
unsigned long slot_fn, hva;
unsigned long *hpte;
@@ -147,7 +147,6 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
unsigned int writing;
unsigned long mmu_seq;
unsigned long rcbits;
- bool realmode = vcpu->arch.vcore->vcore_state == VCORE_RUNNING;
psize = hpte_page_size(pteh, ptel);
if (!psize)
@@ -201,7 +200,7 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
/* Look up the Linux PTE for the backing page */
pte_size = psize;
- pte = lookup_linux_pte(vcpu, hva, writing, &pte_size);
+ pte = lookup_linux_pte(pgdir, hva, writing, &pte_size);
if (pte_present(pte)) {
if (writing && !pte_write(pte))
/* make the actual HPTE be read-only */
@@ -210,6 +209,7 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
pa = pte_pfn(pte) << PAGE_SHIFT;
}
}
+
if (pte_size < psize)
return H_PARAMETER;
if (pa && pte_size > psize)
@@ -297,7 +297,7 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
lock_rmap(rmap);
/* Check for pending invalidations under the rmap chain lock */
if (kvm->arch.using_mmu_notifiers &&
- mmu_notifier_retry(vcpu->kvm, mmu_seq)) {
+ mmu_notifier_retry(kvm, mmu_seq)) {
/* inval in progress, write a non-present HPTE */
pteh |= HPTE_V_ABSENT;
pteh &= ~HPTE_V_VALID;
@@ -318,10 +318,17 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
hpte[0] = pteh;
asm volatile("ptesync" : : : "memory");
- vcpu->arch.gpr[4] = pte_index;
+ *pte_idx_ret = pte_index;
return H_SUCCESS;
}
-EXPORT_SYMBOL_GPL(kvmppc_h_enter);
+EXPORT_SYMBOL_GPL(kvmppc_do_h_enter);
+
+long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
+ long pte_index, unsigned long pteh, unsigned long ptel)
+{
+ return kvmppc_do_h_enter(vcpu->kvm, flags, pte_index, pteh, ptel,
+ vcpu->arch.pgdir, true, &vcpu->arch.gpr[4]);
+}
#define LOCK_TOKEN (*(u32 *)(&get_paca()->lock_token))
generated by cgit v0.10.2 at 2024-07-19 21:54:08 (GMT)