target/s390x: Indicate and check for local tlb clearing
Let's allow to enable it for the qemu cpu model and correctly emulate it. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170622094151.28633-2-david@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
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@ -688,6 +688,7 @@ static void add_qemu_cpu_model_features(S390FeatBitmap fbm)
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S390_FEAT_FLOATING_POINT_SUPPPORT_ENH,
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S390_FEAT_FLOATING_POINT_SUPPPORT_ENH,
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S390_FEAT_STFLE_45,
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S390_FEAT_STFLE_45,
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S390_FEAT_STFLE_49,
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S390_FEAT_STFLE_49,
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S390_FEAT_LOCAL_TLB_CLEARING,
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S390_FEAT_STFLE_53,
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S390_FEAT_STFLE_53,
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};
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};
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int i;
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int i;
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@ -1629,8 +1629,6 @@ void HELPER(ipte)(CPUS390XState *env, uint64_t pto, uint64_t vaddr,
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/* XXX we exploit the fact that Linux passes the exact virtual
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/* XXX we exploit the fact that Linux passes the exact virtual
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address here - it's not obliged to! */
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address here - it's not obliged to! */
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/* XXX: the LC bit should be considered as 0 if the local-TLB-clearing
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facility is not installed. */
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if (m4 & 1) {
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if (m4 & 1) {
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tlb_flush_page(cs, page);
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tlb_flush_page(cs, page);
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} else {
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} else {
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@ -2385,7 +2385,11 @@ static ExitStatus op_ipte(DisasContext *s, DisasOps *o)
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TCGv_i32 m4;
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TCGv_i32 m4;
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check_privileged(s);
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check_privileged(s);
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m4 = tcg_const_i32(get_field(s->fields, m4));
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if (s390_has_feat(S390_FEAT_LOCAL_TLB_CLEARING)) {
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m4 = tcg_const_i32(get_field(s->fields, m4));
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} else {
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m4 = tcg_const_i32(0);
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}
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gen_helper_ipte(cpu_env, o->in1, o->in2, m4);
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gen_helper_ipte(cpu_env, o->in1, o->in2, m4);
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tcg_temp_free_i32(m4);
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tcg_temp_free_i32(m4);
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return NO_EXIT;
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return NO_EXIT;
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