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Subject[PATCH 1/2] KVM MMU: cleanup/fix mmu audit code
This patch does:
- 'sp' parameter in inspect_spte_fn() is not used, so remove it
- fix 'kvm' and 'slots' is not defined in count_rmaps()
- fix a bug in inspect_spte_has_rmap()

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
---
arch/x86/kvm/mmu.c | 15 ++++++++-------
1 files changed, 8 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index d7700bb..5de92ae 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3178,8 +3178,7 @@ static gva_t canonicalize(gva_t gva)
}


-typedef void (*inspect_spte_fn) (struct kvm *kvm, struct kvm_mmu_page *sp,
- u64 *sptep);
+typedef void (*inspect_spte_fn) (struct kvm *kvm, u64 *sptep);

static void __mmu_spte_walk(struct kvm *kvm, struct kvm_mmu_page *sp,
inspect_spte_fn fn)
@@ -3195,7 +3194,7 @@ static void __mmu_spte_walk(struct kvm *kvm, struct kvm_mmu_page *sp,
child = page_header(ent & PT64_BASE_ADDR_MASK);
__mmu_spte_walk(kvm, child, fn);
} else
- fn(kvm, sp, &sp->spt[i]);
+ fn(kvm, &sp->spt[i]);
}
}
}
@@ -3286,6 +3285,8 @@ static void audit_mappings(struct kvm_vcpu *vcpu)

static int count_rmaps(struct kvm_vcpu *vcpu)
{
+ struct kvm *kvm = vcpu->kvm;
+ struct kvm_memslots *slots;
int nmaps = 0;
int i, j, k, idx;

@@ -3319,7 +3320,7 @@ static int count_rmaps(struct kvm_vcpu *vcpu)
return nmaps;
}

-void inspect_spte_has_rmap(struct kvm *kvm, struct kvm_mmu_page *sp, u64 *sptep)
+void inspect_spte_has_rmap(struct kvm *kvm, u64 *sptep)
{
unsigned long *rmapp;
struct kvm_mmu_page *rev_sp;
@@ -3335,14 +3336,14 @@ void inspect_spte_has_rmap(struct kvm *kvm, struct kvm_mmu_page *sp, u64 *sptep)
printk(KERN_ERR "%s: no memslot for gfn %ld\n",
audit_msg, gfn);
printk(KERN_ERR "%s: index %ld of sp (gfn=%lx)\n",
- audit_msg, sptep - rev_sp->spt,
+ audit_msg, (long int)(sptep - rev_sp->spt),
rev_sp->gfn);
dump_stack();
return;
}

rmapp = gfn_to_rmap(kvm, rev_sp->gfns[sptep - rev_sp->spt],
- is_large_pte(*sptep));
+ rev_sp->role.level);
if (!*rmapp) {
if (!printk_ratelimit())
return;
@@ -3377,7 +3378,7 @@ static void check_writable_mappings_rmap(struct kvm_vcpu *vcpu)
continue;
if (!(ent & PT_WRITABLE_MASK))
continue;
- inspect_spte_has_rmap(vcpu->kvm, sp, &pt[i]);
+ inspect_spte_has_rmap(vcpu->kvm, &pt[i]);
}
}
return;
--
1.6.1.2


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