diff options
| author | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2021-09-20 16:24:51 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-18 16:04:11 +0300 |
| commit | 29a1cc3b50113b78931627676071744f7d614766 (patch) | |
| tree | 28c9b076a78bf905a20654319d5fd0e08ff3952e /arch/s390 | |
| parent | 759f27cfa344313149e76c662682639f7c5fdf36 (diff) | |
| download | linux-29a1cc3b50113b78931627676071744f7d614766.tar.xz | |
KVM: s390: pv: avoid stalls for kvm_s390_pv_init_vm
[ Upstream commit 1e2aa46de526a5adafe580bca4c25856bb06f09e ]
When the system is heavily overcommitted, kvm_s390_pv_init_vm might
generate stall notifications.
Fix this by using uv_call_sched instead of just uv_call. This is ok because
we are not holding spinlocks.
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Fixes: 214d9bbcd3a672 ("s390/mm: provide memory management functions for protected KVM guests")
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Message-Id: <20210920132502.36111-4-imbrenda@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kvm/pv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kvm/pv.c b/arch/s390/kvm/pv.c index 74265304dd9c..822887887222 100644 --- a/arch/s390/kvm/pv.c +++ b/arch/s390/kvm/pv.c @@ -190,7 +190,7 @@ int kvm_s390_pv_init_vm(struct kvm *kvm, u16 *rc, u16 *rrc) uvcb.conf_base_stor_origin = (u64)kvm->arch.pv.stor_base; uvcb.conf_virt_stor_origin = (u64)kvm->arch.pv.stor_var; - cc = uv_call(0, (u64)&uvcb); + cc = uv_call_sched(0, (u64)&uvcb); *rc = uvcb.header.rc; *rrc = uvcb.header.rrc; KVM_UV_EVENT(kvm, 3, "PROTVIRT CREATE VM: handle %llx len %llx rc %x rrc %x", |