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KVM: x86: use vcpu-specific functions to read/write/translate GFNs

Quellcode durchsuchen 
We need to hide SMRAM from guests not running in SMM.  Therefore,
all uses of kvm_read_guest* and kvm_write_guest* must be changed to
check whether the VCPU is in system management mode and use a
different set of memslots.  Switch from kvm_* to the newly-introduced
kvm_vcpu_*, which call into kvm_arch_vcpu_memslots_id.

Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Dieser Commit ist enthalten in:
Paolo Bonzini
2015-04-08 15:39:23 +02:00
Ursprung e4cd1da944
Commit 54bf36aac5
7 geänderte Dateien mit 80 neuen und 80 gelöschten Zeilen
Patch-Datei herunterladen Vergleichs-Datei herunterladen Alle Dateien ausklappen Alle Dateien einklappen

18
arch/x86/kvm/paging_tmpl.h
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@@ -256,7 +256,7 @@ static int FNAME(update_accessed_dirty_bits)(struct kvm_vcpu *vcpu,
if (ret)
return ret;
mark_page_dirty(vcpu->kvm, table_gfn);
kvm_vcpu_mark_page_dirty(vcpu, table_gfn);
walker->ptes[level] = pte;
}
return 0;
@@ -338,7 +338,7 @@ retry_walk:
real_gfn = gpa_to_gfn(real_gfn);
host_addr = gfn_to_hva_prot(vcpu->kvm, real_gfn,
host_addr = kvm_vcpu_gfn_to_hva_prot(vcpu, real_gfn,
&walker->pte_writable[walker->level - 1]);
if (unlikely(kvm_is_error_hva(host_addr)))
goto error;
@@ -511,11 +511,11 @@ static bool FNAME(gpte_changed)(struct kvm_vcpu *vcpu,
base_gpa = pte_gpa & ~mask;
index = (pte_gpa - base_gpa) / sizeof(pt_element_t);
r = kvm_read_guest_atomic(vcpu->kvm, base_gpa,
r = kvm_vcpu_read_guest_atomic(vcpu, base_gpa,
gw->prefetch_ptes, sizeof(gw->prefetch_ptes));
curr_pte = gw->prefetch_ptes[index];
} else
r = kvm_read_guest_atomic(vcpu->kvm, pte_gpa,
r = kvm_vcpu_read_guest_atomic(vcpu, pte_gpa,
&curr_pte, sizeof(curr_pte));
return r || curr_pte != gw->ptes[level - 1];
@@ -869,8 +869,8 @@ static void FNAME(invlpg)(struct kvm_vcpu *vcpu, gva_t gva)
if (!rmap_can_add(vcpu))
break;
if (kvm_read_guest_atomic(vcpu->kvm, pte_gpa, &gpte,
sizeof(pt_element_t)))
if (kvm_vcpu_read_guest_atomic(vcpu, pte_gpa, &gpte,
sizeof(pt_element_t)))
break;
FNAME(update_pte)(vcpu, sp, sptep, &gpte);
@@ -956,8 +956,8 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
pte_gpa = first_pte_gpa + i * sizeof(pt_element_t);
if (kvm_read_guest_atomic(vcpu->kvm, pte_gpa, &gpte,
sizeof(pt_element_t)))
if (kvm_vcpu_read_guest_atomic(vcpu, pte_gpa, &gpte,
sizeof(pt_element_t)))
return -EINVAL;
if (FNAME(prefetch_invalid_gpte)(vcpu, sp, &sp->spt[i], gpte)) {
@@ -970,7 +970,7 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
pte_access &= FNAME(gpte_access)(vcpu, gpte);
FNAME(protect_clean_gpte)(&pte_access, gpte);
if (sync_mmio_spte(vcpu->kvm, &sp->spt[i], gfn, pte_access,
if (sync_mmio_spte(vcpu, &sp->spt[i], gfn, pte_access,
&nr_present))
continue;