On 7/30/24 9:24 AM, Christoph Schlameuss wrote:
Add test case running code interacting with registers within a
ucontrol VM.
* Add uc_gprs test case
The test uses the same VM setup using the fixture and debug macros
introduced in earlier patches in this series.
Signed-off-by: Christoph Schlameuss <schlameuss@xxxxxxxxxxxxx>
---
.../selftests/kvm/s390x/ucontrol_test.c | 126 ++++++++++++++++++
1 file changed, 126 insertions(+)
diff --git a/tools/testing/selftests/kvm/s390x/ucontrol_test.c b/tools/testing/selftests/kvm/s390x/ucontrol_test.c
index 029233374465..817b1e08559c 100644
--- a/tools/testing/selftests/kvm/s390x/ucontrol_test.c
+++ b/tools/testing/selftests/kvm/s390x/ucontrol_test.c
@@ -41,6 +41,23 @@ void require_ucontrol_admin(void)
TEST_REQUIRE(kvm_has_cap(KVM_CAP_S390_UCONTROL));
}
[...]
+/* verify SIEIC exit
+ * * reset stop requests
+ * * fail on codes not expected in the test cases
+ */
+static bool uc_handle_sieic(FIXTURE_DATA(uc_kvm) * self)
+{
+ struct kvm_s390_sie_block *sie_block = self->sie_block;
+ struct kvm_run *run = self->run;
+
+ /* check SIE interception code */
+ pr_info("sieic: 0x%2x 0x%4x 0x%4x\n",
I don't think there should be a space before the 4:
sieic: 0x 4 0x8300 0x440000
We can automatically add in the missing 0
0x%02x
+ run->s390_sieic.icptcode,
+ run->s390_sieic.ipa,
+ run->s390_sieic.ipb);
+ switch (run->s390_sieic.icptcode) {
+ case ICPT_STOP:
+ /* stopped via sie V P --> ignore */
+ /* reset stop request */
+ sie_block->cpuflags = sie_block->cpuflags & ~CPUSTAT_STOP_INT;
+ pr_info("sie V P - cleared %.4x\n", sie_block->cpuflags);
+ break;
With the added code that removes the P bit this shouldn't be called
anymore, no?
+ case ICPT_INST:
+ /* end execution in caller on intercepted instruction */
+ return false;
+ default:
+ TEST_FAIL("UNEXPECTED SIEIC CODE %d", run->s390_sieic.icptcode);
+ }
+ return true;
+}
