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Fri, 4 Dec 2020 08:37:06 +0000 (GMT) Received: from linux01.pok.stglabs.ibm.com (unknown [9.114.17.81]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 4 Dec 2020 08:37:05 +0000 (GMT) From: Janosch Frank To: qemu-devel@nongnu.org Subject: [PATCH] s390x: pv: Fence additional unavailable SCLP facilities for PV guests Date: Fri, 4 Dec 2020 03:36:55 -0500 Message-Id: <20201204083655.27946-1-frankja@linux.ibm.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312, 18.0.737 definitions=2020-12-04_02:2020-12-04, 2020-12-04 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 spamscore=0 priorityscore=1501 mlxscore=0 suspectscore=0 impostorscore=0 lowpriorityscore=0 bulkscore=0 adultscore=0 clxscore=1015 malwarescore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012040047 Received-SPF: pass client-ip=148.163.158.5; envelope-from=frankja@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: borntraeger@de.ibm.com, qemu-s390x@nongnu.org, cohuck@redhat.com, david@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" There's no VSIE support for a protected guest, so let's better not advertise it and its support facilities. Signed-off-by: Janosch Frank --- CI: https://gitlab.com/frankja/qemu/-/pipelines/224881703 --- target/s390x/cpu_features.c | 38 ++++++++++++++++++++++++++++++++++++- target/s390x/cpu_models.c | 24 +++++++++++++++++++++-- 2 files changed, 59 insertions(+), 3 deletions(-) diff --git a/target/s390x/cpu_features.c b/target/s390x/cpu_features.c index 42fe0bf4ca..7d7ea8e3b8 100644 --- a/target/s390x/cpu_features.c +++ b/target/s390x/cpu_features.c @@ -107,8 +107,44 @@ void s390_fill_feat_block(const S390FeatBitmap features, S390FeatType type, feat = find_next_bit(features, S390_FEAT_MAX, feat + 1); } - if (type == S390_FEAT_TYPE_SCLP_FAC134 && s390_is_pv()) { + if (!s390_is_pv()) { + return; + } + + /* + * Some facilities are not available for CPUs in protected mode: + * - All SIE facilities because SIE is not available + * - DIAG318 + * + * As VMs can move in and out of protected mode the CPU model + * doesn't protect us from that problem because it is only + * validated at the start of the VM. + */ + switch (type) { + case S390_FEAT_TYPE_SCLP_CPU: + clear_be_bit(s390_feat_def(S390_FEAT_SIE_F2)->bit, data); + clear_be_bit(s390_feat_def(S390_FEAT_SIE_SKEY)->bit, data); + clear_be_bit(s390_feat_def(S390_FEAT_SIE_GPERE)->bit, data); + clear_be_bit(s390_feat_def(S390_FEAT_SIE_SIIF)->bit, data); + clear_be_bit(s390_feat_def(S390_FEAT_SIE_SIGPIF)->bit, data); + clear_be_bit(s390_feat_def(S390_FEAT_SIE_IB)->bit, data); + clear_be_bit(s390_feat_def(S390_FEAT_SIE_CEI)->bit, data); + break; + case S390_FEAT_TYPE_SCLP_CONF_CHAR: + clear_be_bit(s390_feat_def(S390_FEAT_SIE_KSS)->bit, data); + clear_be_bit(s390_feat_def(S390_FEAT_SIE_GSLS)->bit, data); + break; + case S390_FEAT_TYPE_SCLP_CONF_CHAR_EXT: + clear_be_bit(s390_feat_def(S390_FEAT_SIE_64BSCAO)->bit, data); + clear_be_bit(s390_feat_def(S390_FEAT_SIE_CMMA)->bit, data); + clear_be_bit(s390_feat_def(S390_FEAT_SIE_PFMFI)->bit, data); + clear_be_bit(s390_feat_def(S390_FEAT_SIE_IBS)->bit, data); + break; + case S390_FEAT_TYPE_SCLP_FAC134: clear_be_bit(s390_feat_def(S390_FEAT_DIAG_318)->bit, data); + break; + default: + return; } } diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c index b5abff8bef..51feb71546 100644 --- a/target/s390x/cpu_models.c +++ b/target/s390x/cpu_models.c @@ -239,8 +239,28 @@ bool s390_has_feat(S390Feat feat) } return 0; } - if (feat == S390_FEAT_DIAG_318 && s390_is_pv()) { - return false; + + if (s390_is_pv()) { + switch (feat) { + case S390_FEAT_DIAG_318: + case S390_FEAT_SIE_F2: + case S390_FEAT_SIE_SKEY: + case S390_FEAT_SIE_GPERE: + case S390_FEAT_SIE_SIIF: + case S390_FEAT_SIE_SIGPIF: + case S390_FEAT_SIE_IB: + case S390_FEAT_SIE_CEI: + case S390_FEAT_SIE_KSS: + case S390_FEAT_SIE_GSLS: + case S390_FEAT_SIE_64BSCAO: + case S390_FEAT_SIE_CMMA: + case S390_FEAT_SIE_PFMFI: + case S390_FEAT_SIE_IBS: + return false; + break; + default: + break; + } } return test_bit(feat, cpu->model->features); }