diff options
| author | David Hildenbrand <david@redhat.com> | 2017-06-14 15:38:19 +0200 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-06-23 08:40:46 -0700 |
| commit | 3e7e5e0bc10d32d7cc41d0a39113473a3abfc657 (patch) | |
| tree | d5385e9f8fdea4de9663176ddc0eb14298a6f2fa /target/s390x/cpu_models.c | |
| parent | c8bd95377babc3bd60f86cb3e5b24e74097cf6a9 (diff) | |
target/s390x: implement mvcos instruction
This adds support for the MOVE WITH OPTIONAL SPECIFICATIONS (MVCOS)
instruction. Allow to enable it for the qemu cpu model using
qemu-system-s390x ... -cpu qemu,mvcos=on ...
This allows to boot linux kernel that uses it for uacccess.
We are missing (as for most other part) low address protection checks,
PSW key / storage key checks and support for AR-mode.
We fake an ADDRESSING exception when called from problem state (which
seems to rely on PSW key checks to be in place) and if AR-mode is used.
user mode will always see a PRIVILEDGED exception.
This patch is based on an original patch by Miroslav Benes (thanks!).
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170614133819.18480-3-david@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target/s390x/cpu_models.c')
| -rw-r--r-- | target/s390x/cpu_models.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c index 478bcc604e..c3a4ce6c94 100644 --- a/target/s390x/cpu_models.c +++ b/target/s390x/cpu_models.c @@ -682,6 +682,7 @@ static void add_qemu_cpu_model_features(S390FeatBitmap fbm) S390_FEAT_LONG_DISPLACEMENT_FAST, S390_FEAT_ETF2_ENH, S390_FEAT_STORE_CLOCK_FAST, + S390_FEAT_MOVE_WITH_OPTIONAL_SPEC, S390_FEAT_GENERAL_INSTRUCTIONS_EXT, S390_FEAT_EXECUTE_EXT, S390_FEAT_STFLE_45, |