Re: [kvm-unit-tests PATCH v3 4/5] s390x: uv-guest: add share bit test

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On 2/22/22 15:54, Steffen Eiden wrote:
The UV facility bits shared/unshared must both be set or none.

Signed-off-by: Steffen Eiden <seiden@xxxxxxxxxxxxx>

Reviewed-by: Janosch Frank <frankja@xxxxxxxxxxxxx>

---
  s390x/uv-guest.c | 14 ++++++++++++++
  1 file changed, 14 insertions(+)

diff --git a/s390x/uv-guest.c b/s390x/uv-guest.c
index 728c60aa..77057bd2 100644
--- a/s390x/uv-guest.c
+++ b/s390x/uv-guest.c
@@ -159,6 +159,14 @@ static void test_invalid(void)
  	report_prefix_pop();
  }
+static void test_share_bits(void)
+{
+	bool unshare = uv_query_test_call(BIT_UVC_CMD_REMOVE_SHARED_ACCESS);
+	bool share = uv_query_test_call(BIT_UVC_CMD_SET_SHARED_ACCESS);
+
+	report(!(share ^ unshare), "share bits");
+}
+
  int main(void)
  {
  	bool has_uvc = test_facility(158);
@@ -169,6 +177,12 @@ int main(void)
  		goto done;
  	}
+ /*
+	 * Needs to be done before the guest-fence,
+	 * as the fence tests if both shared bits are present
+	 */
+	test_share_bits();
+
  	if (!uv_os_is_guest()) {
  		report_skip("Not a protected guest");
  		goto done;




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