From e0d2773d487c2a41c99d9e256d51cc0a859aa9ab Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Thu, 9 May 2019 13:07:21 +0200 Subject: KVM: s390: protvirt: UV calls in support of diag308 0, 1 diag 308 subcode 0 and 1 require several KVM and Ultravisor interactions. Specific to these "soft" reboots are * The "unshare all" UVC * The "prepare for reset" UVC Signed-off-by: Janosch Frank Acked-by: David Hildenbrand Reviewed-by: Cornelia Huck [borntraeger@de.ibm.com: patch merging, splitting, fixing] Signed-off-by: Christian Borntraeger --- arch/s390/kvm/kvm-s390.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'arch/s390/kvm') diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index abe295077d00..16531b251eab 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -2328,6 +2328,28 @@ static int kvm_s390_handle_pv(struct kvm *kvm, struct kvm_pv_cmd *cmd) cmd->rrc); break; } + case KVM_PV_PREP_RESET: { + r = -EINVAL; + if (!kvm_s390_pv_is_protected(kvm)) + break; + + r = uv_cmd_nodata(kvm_s390_pv_get_handle(kvm), + UVC_CMD_PREPARE_RESET, &cmd->rc, &cmd->rrc); + KVM_UV_EVENT(kvm, 3, "PROTVIRT PREP RESET: rc %x rrc %x", + cmd->rc, cmd->rrc); + break; + } + case KVM_PV_UNSHARE_ALL: { + r = -EINVAL; + if (!kvm_s390_pv_is_protected(kvm)) + break; + + r = uv_cmd_nodata(kvm_s390_pv_get_handle(kvm), + UVC_CMD_SET_UNSHARE_ALL, &cmd->rc, &cmd->rrc); + KVM_UV_EVENT(kvm, 3, "PROTVIRT UNSHARE: rc %x rrc %x", + cmd->rc, cmd->rrc); + break; + } default: r = -ENOTTY; } -- cgit v1.2.3-59-g8ed1b