[v2,for-2.12,06/10] s390x/tcg: Implement STORE CHANNEL PATH STATUS

Message ID 20171207165355.7559-7-david@redhat.com
State New
Headers show
Series
  • s390x/tcg: facilitites and instructions
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Commit Message

David Hildenbrand Dec. 7, 2017, 4:53 p.m.
Just like KVM does, we should suppress this instruction:
    When this instruction is not provided, it is
    checked for privileged operation exception and the
    instruction is suppressed by the machine

Signed-off-by: David Hildenbrand <david@redhat.com>
---
 target/s390x/insn-data.def | 1 +
 target/s390x/translate.c   | 7 +++++++
 2 files changed, 8 insertions(+)

Comments

Richard Henderson Dec. 7, 2017, 11:48 p.m. | #1
On 12/07/2017 08:53 AM, David Hildenbrand wrote:
> Just like KVM does, we should suppress this instruction:
>     When this instruction is not provided, it is
>     checked for privileged operation exception and the
>     instruction is suppressed by the machine
> 
> Signed-off-by: David Hildenbrand <david@redhat.com>
> ---
>  target/s390x/insn-data.def | 1 +
>  target/s390x/translate.c   | 7 +++++++
>  2 files changed, 8 insertions(+)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Patch

diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index e21d226092..c7353e7f11 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -1056,6 +1056,7 @@ 
     C(0xb238, RSCH,    S,     Z,   0, 0, 0, 0, rsch, 0)
     C(0xb237, SAL,     S,     Z,   0, 0, 0, 0, sal, 0)
     C(0xb23c, SCHM,    S,     Z,   0, insn, 0, 0, schm, 0)
+    C(0xb23a, STCPS,   S,     Z,   0, 0, 0, 0, stcps, 0)
     C(0xb233, SSCH,    S,     Z,   0, insn, 0, 0, ssch, 0)
     C(0xb239, STCRW,   S,     Z,   0, insn, 0, 0, stcrw, 0)
     C(0xb234, STSCH,   S,     Z,   0, insn, 0, 0, stsch, 0)
diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index bd3fc6448e..5c2432678c 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -4102,6 +4102,13 @@  static ExitStatus op_schm(DisasContext *s, DisasOps *o)
     return NO_EXIT;
 }
 
+static ExitStatus op_stcps(DisasContext *s, DisasOps *o)
+{
+    check_privileged(s);
+    /* The instruction is suppressed if not provided. */
+    return NO_EXIT;
+}
+
 static ExitStatus op_ssch(DisasContext *s, DisasOps *o)
 {
     check_privileged(s);