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Commit 1f289a84 authored by Alexander Yarygin's avatar Alexander Yarygin Committed by Christian Borntraeger
Browse files

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: default avatarAlexander Yarygin <yarygin@linux.vnet.ibm.com>
Reviewed-by: default avatarDavid Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: default avatarThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent 16a0c4c3

arch/s390/kvm/guestdbg.c

+4 −4
Original line number Diff line number Diff line
@@ -191,7 +191,7 @@ 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,

	ret = read_guest_abs(vcpu, wp_info->phys_addr, wp_info->old_data,

			     wp_info->len);

	if (ret) {

		kfree(wp_info->old_data);
@@ -362,7 +362,7 @@ 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,

		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);