diff options
| author | Janosch Frank <frankja@linux.ibm.com> | 2020-12-11 05:51:09 -0500 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2020-12-21 18:11:32 +0100 |
| commit | 10248418b4bd01e18dc5cb4333e19f0b65338faf (patch) | |
| tree | 972cadf4f5accc1efcdf0dd5b534cd67b0801789 /target | |
| parent | a05f8ecd88f15273d033b6f044b850a8af84a5b8 (diff) | |
s390x: pv: Fence additional unavailable SCLP facilities for PV guests
There's no VSIE support for a protected guest, so let's better not
advertise it and its support facilities.
Fixes: c3347ed0d2ee ("s390x: protvirt: Support unpack facility")
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20201211105109.2913-1-frankja@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'target')
| -rw-r--r-- | target/s390x/cpu_features.c | 39 | ||||
| -rw-r--r-- | target/s390x/cpu_models.c | 25 |
2 files changed, 61 insertions, 3 deletions
diff --git a/target/s390x/cpu_features.c b/target/s390x/cpu_features.c index 42fe0bf4ca..5528acd082 100644 --- a/target/s390x/cpu_features.c +++ b/target/s390x/cpu_features.c @@ -107,8 +107,45 @@ 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_GSLS)->bit, data); + clear_be_bit(s390_feat_def(S390_FEAT_HPMA2)->bit, data); + clear_be_bit(s390_feat_def(S390_FEAT_SIE_KSS)->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..93d8744d29 100644 --- a/target/s390x/cpu_models.c +++ b/target/s390x/cpu_models.c @@ -239,8 +239,29 @@ 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_HPMA2: + 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); } |