KVM: x86: use vcpu-specific functions to read/write/translate GFNs
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>
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index c48748c..6ff1faf 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1955,8 +1955,8 @@
u64 pdpte;
int ret;
- ret = kvm_read_guest_page(vcpu->kvm, gpa_to_gfn(cr3), &pdpte,
- offset_in_page(cr3) + index * 8, 8);
+ ret = kvm_vcpu_read_guest_page(vcpu, gpa_to_gfn(cr3), &pdpte,
+ offset_in_page(cr3) + index * 8, 8);
if (ret)
return 0;
return pdpte;
@@ -2114,7 +2114,7 @@
might_sleep();
- page = gfn_to_page(svm->vcpu.kvm, gpa >> PAGE_SHIFT);
+ page = kvm_vcpu_gfn_to_page(&svm->vcpu, gpa >> PAGE_SHIFT);
if (is_error_page(page))
goto error;
@@ -2153,7 +2153,7 @@
mask = (0xf >> (4 - size)) << start_bit;
val = 0;
- if (kvm_read_guest(svm->vcpu.kvm, gpa, &val, iopm_len))
+ if (kvm_vcpu_read_guest(&svm->vcpu, gpa, &val, iopm_len))
return NESTED_EXIT_DONE;
return (val & mask) ? NESTED_EXIT_DONE : NESTED_EXIT_HOST;
@@ -2178,7 +2178,7 @@
/* Offset is in 32 bit units but need in 8 bit units */
offset *= 4;
- if (kvm_read_guest(svm->vcpu.kvm, svm->nested.vmcb_msrpm + offset, &value, 4))
+ if (kvm_vcpu_read_guest(&svm->vcpu, svm->nested.vmcb_msrpm + offset, &value, 4))
return NESTED_EXIT_DONE;
return (value & mask) ? NESTED_EXIT_DONE : NESTED_EXIT_HOST;
@@ -2449,7 +2449,7 @@
p = msrpm_offsets[i];
offset = svm->nested.vmcb_msrpm + (p * 4);
- if (kvm_read_guest(svm->vcpu.kvm, offset, &value, 4))
+ if (kvm_vcpu_read_guest(&svm->vcpu, offset, &value, 4))
return false;
svm->nested.msrpm[p] = svm->msrpm[p] | value;