[kvm-unit-tests PATCH v1] s390x: add stidp interception test

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Let's add a test case for the STORE CPU ID instruction.

Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
---
 lib/s390x/asm/arch_def.h |  8 ++++++++
 s390x/intercept.c        | 26 ++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/lib/s390x/asm/arch_def.h b/lib/s390x/asm/arch_def.h
index 07d467e..72e5c60 100644
--- a/lib/s390x/asm/arch_def.h
+++ b/lib/s390x/asm/arch_def.h
@@ -143,4 +143,12 @@ struct lowcore {
 #define PGM_INT_CODE_CRYPTO_OPERATION		0x119
 #define PGM_INT_CODE_TX_ABORTED_EVENT		0x200
 
+struct cpuid {
+	uint64_t version : 8;
+	uint64_t id : 24;
+	uint64_t type : 16;
+	uint64_t format : 1;
+	uint64_t reserved : 15;
+};
+
 #endif
diff --git a/s390x/intercept.c b/s390x/intercept.c
index 4558860..9766289 100644
--- a/s390x/intercept.c
+++ b/s390x/intercept.c
@@ -105,6 +105,31 @@ static void test_stap(void)
 	check_pgm_int_code(PGM_INT_CODE_ADDRESSING);
 }
 
+/* Test the STORE CPU ID instruction */
+static void test_stidp(void)
+{
+	struct cpuid id = {};
+
+	asm volatile ("stidp %0\n" : "+Q"(id));
+	report("type set", id.type);
+	report("version valid", !id.version || id.version == 0xff);
+	report("reserved bits not set", !id.reserved);
+
+	expect_pgm_int();
+	low_prot_enable();
+	asm volatile ("stidp 0(%0)\n" : : "r"(8));
+	low_prot_disable();
+	check_pgm_int_code(PGM_INT_CODE_PROTECTION);
+
+	expect_pgm_int();
+	asm volatile ("stidp 0(%0)\n" : : "r"(1));
+	check_pgm_int_code(PGM_INT_CODE_SPECIFICATION);
+
+	expect_pgm_int();
+	asm volatile ("stidp 0(%0)\n" : : "r"(-8));
+	check_pgm_int_code(PGM_INT_CODE_ADDRESSING);
+}
+
 /* Test the TEST BLOCK instruction */
 static void test_testblock(void)
 {
@@ -152,6 +177,7 @@ struct {
 	{ "stpx", test_stpx, false },
 	{ "spx", test_spx, false },
 	{ "stap", test_stap, false },
+	{ "stidp", test_stidp, false },
 	{ "testblock", test_testblock, false },
 	{ NULL, NULL, false }
 };
-- 
2.9.4




[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux