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s390x fixes:

Browse source 
- fix propagation and reset for the new diag318 call
 - fix hot-unplug for vfio-pci devices
 - fix endianness issues in zPCI (regression fix)
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Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20201119' into staging

s390x fixes:
- fix propagation and reset for the new diag318 call
- fix hot-unplug for vfio-pci devices
- fix endianness issues in zPCI (regression fix)

# gpg: Signature made Thu 19 Nov 2020 10:15:58 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-20201119:
  s390x/pci: fix endianness issues
  s390x/pci: Unregister listeners before destroying IOMMU address space
  s390/kvm: fix diag318 propagation and reset functionality

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2020-11-19 10:36:53 +00:00
parent 3d275bd17c a4e2fff1b1
commit ff85db769f
10 changed files with 70 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
hw/s390x/s390-pci-bus.c
View file

@ -732,6 +732,13 @@ static void s390_pci_iommu_free(S390pciState *s, PCIBus *bus, int32_t devfn)
table->iommu[PCI_SLOT(devfn)] = NULL;
g_hash_table_destroy(iommu->iotlb);
/*
* An attached PCI device may have memory listeners, eg. VFIO PCI.
* The associated subregion will already have been unmapped in
* s390_pci_iommu_disable in response to the guest deconfigure request.
* Remove the listeners now before destroying the address space.
*/
address_space_remove_listeners(&iommu->as);
address_space_destroy(&iommu->as);
object_unparent(OBJECT(&iommu->mr));
object_unparent(OBJECT(iommu));
@ -770,11 +777,11 @@ static void s390_pci_init_default_group(void)
group = s390_group_create(ZPCI_DEFAULT_FN_GRP);
resgrp = &group->zpci_group;
resgrp->fr = 1;
stq_p(&resgrp->dasm, 0);
stq_p(&resgrp->msia, ZPCI_MSI_ADDR);
stw_p(&resgrp->mui, DEFAULT_MUI);
stw_p(&resgrp->i, 128);
stw_p(&resgrp->maxstbl, 128);
resgrp->dasm = 0;
resgrp->msia = ZPCI_MSI_ADDR;
resgrp->mui = DEFAULT_MUI;
resgrp->i = 128;
resgrp->maxstbl = 128;
resgrp->version = 0;
}

16
hw/s390x/s390-pci-inst.c
View file

@ -281,7 +281,13 @@ int clp_service_call(S390CPU *cpu, uint8_t r2, uintptr_t ra)
goto out;
}
memcpy(resquery, &pbdev->zpci_fn, sizeof(*resquery));
stq_p(&resquery->sdma, pbdev->zpci_fn.sdma);
stq_p(&resquery->edma, pbdev->zpci_fn.edma);
stw_p(&resquery->pchid, pbdev->zpci_fn.pchid);
resquery->flags = pbdev->zpci_fn.flags;
resquery->pfgid = pbdev->zpci_fn.pfgid;
stl_p(&resquery->fid, pbdev->zpci_fn.fid);
stl_p(&resquery->uid, pbdev->zpci_fn.uid);
for (i = 0; i < PCI_BAR_COUNT; i++) {
uint32_t data = pci_get_long(pbdev->pdev->config +
@ -312,7 +318,13 @@ int clp_service_call(S390CPU *cpu, uint8_t r2, uintptr_t ra)
stw_p(&resgrp->hdr.rsp, CLP_RC_QUERYPCIFG_PFGID);
goto out;
}
memcpy(resgrp, &group->zpci_group, sizeof(ClpRspQueryPciGrp));
resgrp->fr = group->zpci_group.fr;
stq_p(&resgrp->dasm, group->zpci_group.dasm);
stq_p(&resgrp->msia, group->zpci_group.msia);
stw_p(&resgrp->mui, group->zpci_group.mui);
stw_p(&resgrp->i, group->zpci_group.i);
stw_p(&resgrp->maxstbl, group->zpci_group.maxstbl);
resgrp->version = group->zpci_group.version;
stw_p(&resgrp->hdr.rsp, CLP_RC_OK);
break;
}

12
hw/s390x/s390-pci-vfio.c
View file

@ -156,12 +156,12 @@ static void s390_pci_read_group(S390PCIBusDevice *pbdev,
if (cap->flags & VFIO_DEVICE_INFO_ZPCI_FLAG_REFRESH) {
resgrp->fr = 1;
}
stq_p(&resgrp->dasm, cap->dasm);
stq_p(&resgrp->msia, cap->msi_addr);
stw_p(&resgrp->mui, cap->mui);
stw_p(&resgrp->i, cap->noi);
stw_p(&resgrp->maxstbl, cap->maxstbl);
stb_p(&resgrp->version, cap->version);
resgrp->dasm = cap->dasm;
resgrp->msia = cap->msi_addr;
resgrp->mui = cap->mui;
resgrp->i = cap->noi;
resgrp->maxstbl = cap->maxstbl;
resgrp->version = cap->version;
}
}

4
hw/s390x/s390-virtio-ccw.c
View file

@ -486,6 +486,10 @@ static void s390_machine_reset(MachineState *machine)
default:
g_assert_not_reached();
}
CPU_FOREACH(t) {
run_on_cpu(t, s390_do_cpu_set_diag318, RUN_ON_CPU_HOST_ULONG(0));
}
s390_ipl_clear_reset_request();
}

8
include/hw/s390x/s390-pci-clp.h
View file

@ -144,10 +144,10 @@ typedef struct ClpReqQueryPciGrp {
ClpReqHdr hdr;
uint32_t fmt;
uint64_t reserved1;
#define CLP_REQ_QPCIG_MASK_PFGID 0xff
uint32_t g;
uint32_t reserved2;
uint64_t reserved3;
uint8_t reserved2[3];
uint8_t g;
uint32_t reserved3;
uint64_t reserved4;
} QEMU_PACKED ClpReqQueryPciGrp;
/* Query PCI function group response */

7
target/s390x/cpu.c
View file

@ -447,6 +447,13 @@ void s390_enable_css_support(S390CPU *cpu)
kvm_s390_enable_css_support(cpu);
}
}
void s390_do_cpu_set_diag318(CPUState *cs, run_on_cpu_data arg)
{
if (kvm_enabled()) {
kvm_s390_set_diag318(cs, arg.host_ulong);
}
}
#endif
static gchar *s390_gdb_arch_name(CPUState *cs)

1
target/s390x/cpu.h
View file

@ -769,6 +769,7 @@ int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit);
void s390_set_max_pagesize(uint64_t pagesize, Error **errp);
void s390_cmma_reset(void);
void s390_enable_css_support(S390CPU *cpu);
void s390_do_cpu_set_diag318(CPUState *cs, run_on_cpu_data arg);
int s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch_id,
int vq, bool assign);
#ifndef CONFIG_USER_ONLY

4
target/s390x/kvm-stub.c
View file

@ -120,3 +120,7 @@ void kvm_s390_stop_interrupt(S390CPU *cpu)
void kvm_s390_restart_interrupt(S390CPU *cpu)
{
}
void kvm_s390_set_diag318(CPUState *cs, uint64_t diag318_info)
{
}

22
target/s390x/kvm.c
View file

@ -1611,10 +1611,23 @@ static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
return -ENOENT;
}
void kvm_s390_set_diag318(CPUState *cs, uint64_t diag318_info)
{
CPUS390XState *env = &S390_CPU(cs)->env;
/* Feat bit is set only if KVM supports sync for diag318 */
if (s390_has_feat(S390_FEAT_DIAG_318)) {
env->diag318_info = diag318_info;
cs->kvm_run->s.regs.diag318 = diag318_info;
cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_DIAG318;
}
}
static void handle_diag_318(S390CPU *cpu, struct kvm_run *run)
{
uint64_t reg = (run->s390_sieic.ipa & 0x00f0) >> 4;
uint64_t diag318_info = run->s.regs.gprs[reg];
CPUState *t;
/*
* DIAG 318 can only be enabled with KVM support. As such, let's
@ -1622,13 +1635,12 @@ static void handle_diag_318(S390CPU *cpu, struct kvm_run *run)
*/
if (!s390_has_feat(S390_FEAT_DIAG_318)) {
kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION);
return;
}
cpu->env.diag318_info = diag318_info;
if (can_sync_regs(CPU(cpu), KVM_SYNC_DIAG318)) {
run->s.regs.diag318 = diag318_info;
run->kvm_dirty_regs |= KVM_SYNC_DIAG318;
CPU_FOREACH(t) {
run_on_cpu(t, s390_do_cpu_set_diag318,
RUN_ON_CPU_HOST_ULONG(diag318_info));
}
}

1
target/s390x/kvm_s390x.h
View file

@ -45,5 +45,6 @@ void kvm_s390_set_max_pagesize(uint64_t pagesize, Error **errp);
void kvm_s390_crypto_reset(void);
void kvm_s390_restart_interrupt(S390CPU *cpu);
void kvm_s390_stop_interrupt(S390CPU *cpu);
void kvm_s390_set_diag318(CPUState *cs, uint64_t diag318_info);
#endif /* KVM_S390X_H */