diff options
| author | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2026-06-23 17:33:27 +0200 |
|---|---|---|
| committer | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2026-06-24 10:08:57 +0200 |
| commit | 9b0bf9b93cbff50764713b62d0f38d5238eea8c8 (patch) | |
| tree | 991c21abd1ef6440b99c940c079cf5858179e2b4 /arch | |
| parent | 2bd74dce0814acc382cfd6903ec902fdcd7b0fed (diff) | |
KVM: s390: Fix locking in kvm_s390_set_mem_control()
Add the missing locking around dat_reset_cmma().
Fixes: e38c884df921 ("KVM: s390: Switch to new gmap")
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-ID: <20260623153331.233784-7-imbrenda@linux.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 8a3d55410f06..221b2fb199d4 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -990,9 +990,11 @@ static int kvm_s390_set_mem_control(struct kvm *kvm, struct kvm_device_attr *att if (!kvm->arch.use_cmma) break; + guard(mutex)(&kvm->lock); VM_EVENT(kvm, 3, "%s", "RESET: CMMA states"); do { - start_gfn = dat_reset_cmma(kvm->arch.gmap->asce, start_gfn); + scoped_guard(read_lock, &kvm->mmu_lock) + start_gfn = dat_reset_cmma(kvm->arch.gmap->asce, start_gfn); cond_resched(); } while (start_gfn); ret = 0; |