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[v2,4/5] KVM: s390: selftests: Add regression tests for KMAC, KMC, KM, KIMD and KLMD crypto subfunctions

Message ID 20240820065623.1140399-5-hari55@linux.ibm.com (mailing list archive)
State New
Headers show
Series KVM: s390: selftests: Add regression tests for CPU subfunctions | expand

Commit Message

Hariharan Mari Aug. 20, 2024, 6:48 a.m. UTC 
Extend the existing regression test framework for s390x CPU subfunctions
to include tests for the KMAC (Compute Message Authentication Code),
KMC (Cipher Message with Chaining), KM (Cipher Message) KIMD (Compute
Intermediate Message Digest) and KLMD (Compute Last Message Digest)
crypto functions.

The test procedure follows the established pattern.

Suggested-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Hariharan Mari <hari55@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
---
 .../kvm/s390x/cpumodel_subfuncs_test.c        | 78 +++++++++++++++++++
 1 file changed, 78 insertions(+)

Comments

Christoph Schlameuss Aug. 21, 2024, 7:23 a.m. UTC | #1 
On Tue Aug 20, 2024 at 8:48 AM CEST, Hariharan Mari wrote:
> Extend the existing regression test framework for s390x CPU subfunctions
> to include tests for the KMAC (Compute Message Authentication Code),
> KMC (Cipher Message with Chaining), KM (Cipher Message) KIMD (Compute
> Intermediate Message Digest) and KLMD (Compute Last Message Digest)
> crypto functions.
>
> The test procedure follows the established pattern.
>
> Suggested-by: Janosch Frank <frankja@linux.ibm.com>
> Signed-off-by: Hariharan Mari <hari55@linux.ibm.com>
> Reviewed-by: Janosch Frank <frankja@linux.ibm.com>

LGTM

Reviewed-by: Christoph Schlameuss <schlameuss@linux.ibm.com>

> ---
>  .../kvm/s390x/cpumodel_subfuncs_test.c        | 78 +++++++++++++++++++
>  1 file changed, 78 insertions(+)

[...]
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Patch

diff --git a/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c b/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c
index 1fe4fc709afc..c31f445c6f03 100644
--- a/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c
+++ b/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c
@@ -37,6 +37,73 @@  static void get_cpu_machine_subfuntions(struct kvm_vm *vm,
 	TEST_ASSERT(!r, "Get cpu subfunctions failed r=%d errno=%d", r, errno);
 }
 
+/*
+ * Testing Crypto Compute Message Authentication Code (KMAC) CPU subfunction's
+ * ASM block
+ */
+static void test_kmac_asm_block(u8 (*query)[16])
+{
+	asm volatile("	la	%%r1,%[query]\n"
+			"	xgr	%%r0,%%r0\n"
+			"	.insn	rre,0xb91e0000,0,2\n"
+			: [query] "=R" (*query)
+			:
+			: "cc", "r0", "r1");
+}
+
+/*
+ * Testing Crypto Cipher Message with Chaining (KMC) CPU subfunction's ASM block
+ */
+static void test_kmc_asm_block(u8 (*query)[16])
+{
+	asm volatile("	la	%%r1,%[query]\n"
+			"	xgr	%%r0,%%r0\n"
+			"	.insn	rre,0xb92f0000,2,4\n"
+			: [query] "=R" (*query)
+			:
+			: "cc", "r0", "r1");
+}
+
+/*
+ * Testing Crypto Cipher Message (KM) CPU subfunction's ASM block
+ */
+static void test_km_asm_block(u8 (*query)[16])
+{
+	asm volatile("	la	%%r1,%[query]\n"
+			"	xgr	%%r0,%%r0\n"
+			"	.insn	rre,0xb92e0000,2,4\n"
+			: [query] "=R" (*query)
+			:
+			: "cc", "r0", "r1");
+}
+
+/*
+ * Testing Crypto Compute Intermediate Message Digest (KIMD) CPU subfunction's
+ * ASM block
+ */
+static void test_kimd_asm_block(u8 (*query)[16])
+{
+	asm volatile("	la	%%r1,%[query]\n"
+			"	xgr	%%r0,%%r0\n"
+			"	.insn	rre,0xb93e0000,0,2\n"
+			: [query] "=R" (*query)
+			:
+			: "cc", "r0", "r1");
+}
+
+/*
+ * Testing Crypto Compute Last Message Digest (KLMD) CPU subfunction's ASM block
+ */
+static void test_klmd_asm_block(u8 (*query)[16])
+{
+	asm volatile("	la	%%r1,%[query]\n"
+			"	xgr	%%r0,%%r0\n"
+			"	.insn	rre,0xb93f0000,0,2\n"
+			: [query] "=R" (*query)
+			:
+			: "cc", "r0", "r1");
+}
+
 /*
  * Testing Crypto Cipher Message with Counter (KMCTR) CPU subfunction's ASM
  * block
@@ -170,6 +237,17 @@  struct testdef {
 	testfunc_t test;
 	int facility_bit;
 } testlist[] = {
+	/* MSA - Facility bit 17 */
+	{ "KMAC", cpu_subfunc.kmac, sizeof(cpu_subfunc.kmac),
+		test_kmac_asm_block, 17 },
+	{ "KMC", cpu_subfunc.kmc, sizeof(cpu_subfunc.kmc),
+		test_kmc_asm_block, 17 },
+	{ "KM", cpu_subfunc.km, sizeof(cpu_subfunc.km),
+		test_km_asm_block, 17 },
+	{ "KIMD", cpu_subfunc.kimd, sizeof(cpu_subfunc.kimd),
+		test_kimd_asm_block, 17 },
+	{ "KLMD", cpu_subfunc.klmd, sizeof(cpu_subfunc.klmd),
+		test_klmd_asm_block, 17 },
 	/* MSA - Facility bit 77 */
 	{ "KMCTR", cpu_subfunc.kmctr, sizeof(cpu_subfunc.kmctr),
 		test_kmctr_asm_block, 77 },