diff options
| author | Steffen Eiden <seiden@linux.ibm.com> | 2026-02-09 16:29:25 +0100 |
|---|---|---|
| committer | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2026-02-10 12:21:30 +0100 |
| commit | e3372ffb5f9e2dda3da259b768aab6271672b90d (patch) | |
| tree | 3cb4bb29e6e1650f4cc9cc962ff13b9c80a7d52c | |
| parent | 46aa186a08d87ce834c7bb68e46dc84bac1995c1 (diff) | |
KVM: s390: Increase permitted SE header size to 1 MiB
Relax the maximum allowed Secure Execution (SE) header size from
8 KiB to 1 MiB. This allows individual secure guest images to run on a
wider range of physical machines.
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 9f24252775dd..de645025db0f 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -2589,9 +2589,9 @@ static int kvm_s390_handle_pv(struct kvm *kvm, struct kvm_pv_cmd *cmd) if (copy_from_user(&parms, argp, sizeof(parms))) break; - /* Currently restricted to 8KB */ + /* Currently restricted to 1MiB */ r = -EINVAL; - if (parms.length > PAGE_SIZE * 2) + if (parms.length > SZ_1M) break; r = -ENOMEM; |