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| author | David Hildenbrand <david@redhat.com> | 2017-06-22 11:41:49 +0200 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-06-23 09:17:45 -0700 |
| commit | faf1c63d34861734895521277153c6c0e72b395c (patch) | |
| tree | af288db950ae5857405ebc088c2a5ff124e3e7ab /target | |
| parent | 159fed45db25c0c82f3833509502c8242a65c097 (diff) | |
| download | qemu-faf1c63d34861734895521277153c6c0e72b395c.zip qemu-faf1c63d34861734895521277153c6c0e72b395c.tar.gz qemu-faf1c63d34861734895521277153c6c0e72b395c.tar.bz2 | |
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>
Diffstat (limited to 'target')
| -rw-r--r-- | target/s390x/cpu_models.c | 1 | ||||
| -rw-r--r-- | target/s390x/mem_helper.c | 2 | ||||
| -rw-r--r-- | target/s390x/translate.c | 6 |
3 files changed, 6 insertions, 3 deletions
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c index d4fcddb..51b17b9 100644 --- a/target/s390x/cpu_models.c +++ b/target/s390x/cpu_models.c @@ -688,6 +688,7 @@ static void add_qemu_cpu_model_features(S390FeatBitmap fbm) S390_FEAT_FLOATING_POINT_SUPPPORT_ENH, S390_FEAT_STFLE_45, S390_FEAT_STFLE_49, + S390_FEAT_LOCAL_TLB_CLEARING, S390_FEAT_STFLE_53, }; int i; diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c index a0a805c..182c46f 100644 --- a/target/s390x/mem_helper.c +++ b/target/s390x/mem_helper.c @@ -1629,8 +1629,6 @@ void HELPER(ipte)(CPUS390XState *env, uint64_t pto, uint64_t vaddr, /* XXX we exploit the fact that Linux passes the exact virtual address here - it's not obliged to! */ - /* XXX: the LC bit should be considered as 0 if the local-TLB-clearing - facility is not installed. */ if (m4 & 1) { tlb_flush_page(cs, page); } else { diff --git a/target/s390x/translate.c b/target/s390x/translate.c index df3fefa..1db5f2d 100644 --- a/target/s390x/translate.c +++ b/target/s390x/translate.c @@ -2385,7 +2385,11 @@ static ExitStatus op_ipte(DisasContext *s, DisasOps *o) TCGv_i32 m4; check_privileged(s); - m4 = tcg_const_i32(get_field(s->fields, m4)); + if (s390_has_feat(S390_FEAT_LOCAL_TLB_CLEARING)) { + m4 = tcg_const_i32(get_field(s->fields, m4)); + } else { + m4 = tcg_const_i32(0); + } gen_helper_ipte(cpu_env, o->in1, o->in2, m4); tcg_temp_free_i32(m4); return NO_EXIT; |