From 1b6a19b34d54d3d56b90423e4a7c60b971d70197 Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Mon, 31 Mar 2014 09:44:30 +0200 Subject: kvm/s390: also set guest pages back to stable on kexec/kdump We need to reset the usage state of the pages on kexec/kdump, which use subcode 0 and 1. We will only do the cmma reset in the kernel, everything else is done in userspace as before. Signed-off-by: Christian Borntraeger Signed-off-by: Martin Schwidefsky --- arch/s390/kvm/diag.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/s390/kvm/diag.c') diff --git a/arch/s390/kvm/diag.c b/arch/s390/kvm/diag.c index 6f9cfa500372..1facd9277f38 100644 --- a/arch/s390/kvm/diag.c +++ b/arch/s390/kvm/diag.c @@ -85,6 +85,10 @@ static int __diag_ipl_functions(struct kvm_vcpu *vcpu) VCPU_EVENT(vcpu, 5, "diag ipl functions, subcode %lx", subcode); switch (subcode) { + case 0: + case 1: + page_table_reset_pgste(current->mm, 0, TASK_SIZE); + return -EOPNOTSUPP; case 3: vcpu->run->s390_reset_flags = KVM_S390_RESET_CLEAR; page_table_reset_pgste(current->mm, 0, TASK_SIZE); -- cgit v1.2.3