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some s390x fixes 

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Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20201026' into staging

some s390x fixes

# gpg: Signature made Mon 26 Oct 2020 10:46:50 GMT
# gpg:                using RSA key C3D0D66DC3624FF6A8C018CEDECF6B93C6F02FAF
# gpg:                issuer "cohuck@redhat.com"
# gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>" [unknown]
# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>" [full]
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>" [full]
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>" [unknown]
# gpg:                 aka "Cornelia Huck <cohuck@redhat.com>" [unknown]
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20201026:
  s390x: pv: Fix diag318 PV fencing
  s390x: pv: Remove sclp boundary checks
  s390x/s390-virtio-ccw: Reset PCI devices during subsystem reset

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2020-10-26 14:50:03 +00:00
parent e75de8354a 3ded270a26
commit a46e727105
6 changed files with 15 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
hw/s390x/s390-virtio-ccw.c
View File

@ -101,6 +101,7 @@ static const char *const reset_dev_types[] = {
"s390-sclp-event-facility",
"s390-flic",
"diag288",
TYPE_S390_PCI_HOST_BRIDGE,
};
static void subsystem_reset(void)

5
hw/s390x/sclp.c
View File

@ -285,11 +285,6 @@ int sclp_service_call_protected(CPUS390XState *env, uint64_t sccb,
goto out_write;
}
if (!sccb_verify_boundary(sccb, be16_to_cpu(work_sccb->h.length), code)) {
work_sccb->h.response_code = cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION);
goto out_write;
}
sclp_c->execute(sclp, work_sccb, code);
out_write:
s390_cpu_pv_mem_write(env_archcpu(env), 0, work_sccb,

5
target/s390x/cpu_features.c
View File

@ -14,6 +14,7 @@
#include "qemu/osdep.h"
#include "qemu/module.h"
#include "cpu_features.h"
#include "hw/s390x/pv.h"
#define DEF_FEAT(_FEAT, _NAME, _TYPE, _BIT, _DESC) \
[S390_FEAT_##_FEAT] = { \
@ -105,6 +106,10 @@ 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()) {
clear_be_bit(s390_feat_def(S390_FEAT_DIAG_318)->bit, data);
}
}
void s390_add_from_feat_block(S390FeatBitmap features, S390FeatType type,

4
target/s390x/cpu_features.h
View File

@ -81,6 +81,10 @@ const S390FeatGroupDef *s390_feat_group_def(S390FeatGroup group);
#define BE_BIT_NR(BIT) (BIT ^ (BITS_PER_LONG - 1))
static inline void clear_be_bit(unsigned int bit_nr, uint8_t *array)
{
array[bit_nr / 8] &= ~(0x80 >> (bit_nr % 8));
}
static inline void set_be_bit(unsigned int bit_nr, uint8_t *array)
{
array[bit_nr / 8] |= 0x80 >> (bit_nr % 8);

4
target/s390x/cpu_models.c
View File

@ -29,6 +29,7 @@
#include "hw/pci/pci.h"
#endif
#include "qapi/qapi-commands-machine-target.h"
#include "hw/s390x/pv.h"
#define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
{ \
@ -238,6 +239,9 @@ bool s390_has_feat(S390Feat feat)
}
return 0;
}
if (feat == S390_FEAT_DIAG_318 && s390_is_pv()) {
return false;
}
return test_bit(feat, cpu->model->features);
}

3
target/s390x/kvm.c
View File

@ -2498,8 +2498,7 @@ void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp)
*/
set_bit(S390_FEAT_EXTENDED_LENGTH_SCCB, model->features);
/* DIAGNOSE 0x318 is not supported under protected virtualization */
if (!s390_is_pv() && kvm_check_extension(kvm_state, KVM_CAP_S390_DIAG318)) {
if (kvm_check_extension(kvm_state, KVM_CAP_S390_DIAG318)) {
set_bit(S390_FEAT_DIAG_318, model->features);
}