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-rw-r--r--target/s390x/cpu_models.c26
-rw-r--r--target/s390x/cpu_models.h2
2 files changed, 28 insertions, 0 deletions
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
index 7cb55dc7e3..fd3f459caa 100644
--- a/target/s390x/cpu_models.c
+++ b/target/s390x/cpu_models.c
@@ -77,6 +77,32 @@ static S390CPUDef s390_cpu_defs[] = {
CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"),
};
+void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat)
+{
+ const S390CPUDef *def;
+
+ def = s390_find_cpu_def(0, gen, ec_ga, NULL);
+ clear_bit(feat, (unsigned long *)&def->default_feat);
+}
+
+void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
+ const S390CPUDef *def = &s390_cpu_defs[i];
+
+ if (def->gen < gen) {
+ continue;
+ }
+ if (def->gen == gen && def->ec_ga < ec_ga) {
+ continue;
+ }
+
+ clear_bit(feat, (unsigned long *)&def->default_feat);
+ }
+}
+
uint32_t s390_get_hmfai(void)
{
static S390CPU *cpu;
diff --git a/target/s390x/cpu_models.h b/target/s390x/cpu_models.h
index d41f8d6e38..c0bee15d7a 100644
--- a/target/s390x/cpu_models.h
+++ b/target/s390x/cpu_models.h
@@ -72,6 +72,8 @@ typedef struct S390CPUModel {
#define ibc_gen(x) (x == 0 ? 0 : ((x >> 4) + S390_GEN_Z10))
#define ibc_ec_ga(x) (x & 0xf)
+void s390_cpudef_featoff(uint8_t gen, uint8_t ec_ga, S390Feat feat);
+void s390_cpudef_featoff_greater(uint8_t gen, uint8_t ec_ga, S390Feat feat);
uint32_t s390_get_hmfai(void);
uint8_t s390_get_mha_pow(void);
uint32_t s390_get_ibc_val(void);