diff options
| author |   Paolo Bonzini <pbonzini@redhat.com> | 2018-09-18 15:12:51 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-09-18 15:12:51 +0200 |
| commit | cb5fb87a2fbee188fac605e0ebff8c35efdbaf3d (patch) | |
| tree | 0338553bd44f4407060499f819cbe7d9c31808bf /arch | |
| parent | Linux 4.19-rc4 (diff) | |
| parent | KVM: s390: Make huge pages unavailable in ucontrol VMs (diff) | |
| download | linux-dev-cb5fb87a2fbee188fac605e0ebff8c35efdbaf3d.tar.xz linux-dev-cb5fb87a2fbee188fac605e0ebff8c35efdbaf3d.zip | |
Merge tag 'kvm-s390-master-4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: s390: Fixes for 4.19
- more fallout from the hugetlbfs enablement
- bugfix for vma handling
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 4 | ||||
| -rw-r--r-- | arch/s390/mm/gmap.c | 4 |
2 files changed, 5 insertions, 3 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index f69333fd2fa3..ac5da6b0b862 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -481,7 +481,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) break; case KVM_CAP_S390_HPAGE_1M: r = 0; - if (hpage) + if (hpage && !kvm_is_ucontrol(kvm)) r = 1; break; case KVM_CAP_S390_MEM_OP: @@ -691,7 +691,7 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap) mutex_lock(&kvm->lock); if (kvm->created_vcpus) r = -EBUSY; - else if (!hpage || kvm->arch.use_cmma) + else if (!hpage || kvm->arch.use_cmma || kvm_is_ucontrol(kvm)) r = -EINVAL; else { r = 0; diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c index bb44990c8212..911c7ded35f1 100644 --- a/arch/s390/mm/gmap.c +++ b/arch/s390/mm/gmap.c @@ -708,11 +708,13 @@ void gmap_discard(struct gmap *gmap, unsigned long from, unsigned long to) vmaddr |= gaddr & ~PMD_MASK; /* Find vma in the parent mm */ vma = find_vma(gmap->mm, vmaddr); + if (!vma) + continue; /* * We do not discard pages that are backed by * hugetlbfs, so we don't have to refault them. */ - if (vma && is_vm_hugetlb_page(vma)) + if (is_vm_hugetlb_page(vma)) continue; size = min(to - gaddr, PMD_SIZE - (gaddr & ~PMD_MASK)); zap_page_range(vma, vmaddr, size); |