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| author |   Christian Borntraeger <borntraeger@de.ibm.com> | 2014-03-31 09:44:30 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-04-01 09:23:38 +0200 |
| commit | 1b6a19b34d54d3d56b90423e4a7c60b971d70197 (patch) | |
| tree | ae463fa0260ef0dfce24f3739fd0287ffeb96189 /arch/s390/kvm/diag.c | |
| parent | lcs: Add missing destroy_timer_on_stack() (diff) | |
| download | linux-dev-1b6a19b34d54d3d56b90423e4a7c60b971d70197.tar.xz linux-dev-1b6a19b34d54d3d56b90423e4a7c60b971d70197.zip | |
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 <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/diag.c')
| -rw-r--r-- | arch/s390/kvm/diag.c | 4 |
1 files changed, 4 insertions, 0 deletions
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); |