KVM: s390: Use the read_guest_abs() in guest debug functions

The guest debug functions work on absolute addresses and should use the
read_guest_abs() function rather than general read_guest() that
works with logical addresses.

Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

diff --git a/arch/s390/kvm/guestdbg.c b/arch/s390/kvm/guestdbg.c
index 3e8d409..e97b345 100644 (file)
--- a/arch/s390/kvm/guestdbg.c
+++ b/arch/s390/kvm/guestdbg.c
@@ -191,8 +191,8 @@ static int __import_wp_info(struct kvm_vcpu *vcpu,
        if (!wp_info->old_data)
                return -ENOMEM;
        /* try to backup the original value */
-       ret = read_guest(vcpu, wp_info->phys_addr, wp_info->old_data,
-                        wp_info->len);
+       ret = read_guest_abs(vcpu, wp_info->phys_addr, wp_info->old_data,
+                            wp_info->len);
        if (ret) {
                kfree(wp_info->old_data);
                wp_info->old_data = NULL;
@@ -362,8 +362,8 @@ static struct kvm_hw_wp_info_arch *any_wp_changed(struct kvm_vcpu *vcpu)
                        continue;
 
                /* refetch the wp data and compare it to the old value */
-               if (!read_guest(vcpu, wp_info->phys_addr, temp,
-                               wp_info->len)) {
+               if (!read_guest_abs(vcpu, wp_info->phys_addr, temp,
+                                   wp_info->len)) {
                        if (memcmp(temp, wp_info->old_data, wp_info->len)) {
                                kfree(temp);
                                return wp_info;