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s390x/cpumodel: allow zpci features in qemu model 

AEN and AIS can be provided unconditionally, ZPCI should be turned on
manually.

With -cpu qemu,zpci=on, the guest kernel can now successfully detect
virtio-pci devices under tcg.

Also fixup the order of the MSA_EXT_{3,4} flags while at it.

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
master
Cornelia Huck 2017-11-23 16:59:11 +01:00
parent f6c232ce16
commit e3fd586dfa
2 changed files with 11 additions and 1 deletions
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6
target/s390x/cpu_models.c
View File

@ -23,6 +23,7 @@
#include "qapi/qmp/qbool.h"
#ifndef CONFIG_USER_ONLY
#include "sysemu/arch_init.h"
#include "hw/pci/pci.h"
#endif
#define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
@ -1271,6 +1272,11 @@ static void register_types(void)
/* init all bitmaps from gnerated data initially */
s390_init_feat_bitmap(qemu_max_cpu_feat_init, qemu_max_cpu_feat);
#ifndef CONFIG_USER_ONLY
if (!pci_available) {
clear_bit(S390_FEAT_ZPCI, qemu_max_cpu_feat);
}
#endif
for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
s390_init_feat_bitmap(s390_cpu_defs[i].base_init,
s390_cpu_defs[i].base_feat);

6
target/s390x/gen-features.c
View File

@ -572,8 +572,10 @@ static uint16_t qemu_LATEST[] = {
S390_FEAT_STFLE_49,
S390_FEAT_LOCAL_TLB_CLEARING,
S390_FEAT_INTERLOCKED_ACCESS_2,
S390_FEAT_MSA_EXT_4,
S390_FEAT_ADAPTER_EVENT_NOTIFICATION,
S390_FEAT_ADAPTER_INT_SUPPRESSION,
S390_FEAT_MSA_EXT_3,
S390_FEAT_MSA_EXT_4,
};
/* add all new definitions before this point */
@ -582,6 +584,8 @@ static uint16_t qemu_MAX[] = {
S390_FEAT_STFLE_53,
/* generates a dependency warning, leave it out for now */
S390_FEAT_MSA_EXT_5,
/* only with CONFIG_PCI */
S390_FEAT_ZPCI,
};
/****** END FEATURE DEFS ******/