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67730e6c53
Use the kernel's canonical $(ARCH) paths instead of the raw target triple for KVM selftests directories. KVM selftests are quite nearly the only place in the entire kernel that using the target triple for directories, tools/testing/selftests/drivers/s390x being the lone holdout. Using the kernel's preferred nomenclature eliminates the minor, but annoying, friction of having to translate to KVM's selftests directories, e.g. for pattern matching, opening files, running selftests, etc. Opportunsitically delete file comments that reference the full path of the file, as they are obviously prone to becoming stale, and serve no known purpose. Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Acked-by: Andrew Jones <ajones@ventanamicro.com> Link: https://lore.kernel.org/r/20241128005547.4077116-16-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
301 lines
8.4 KiB
C
301 lines
8.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright IBM Corp. 2024
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*
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* Authors:
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* Hariharan Mari <hari55@linux.ibm.com>
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*
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* The tests compare the result of the KVM ioctl for obtaining CPU subfunction data with those
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* from an ASM block performing the same CPU subfunction. Currently KVM doesn't mask instruction
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* query data reported via the CPU Model, allowing us to directly compare it with the data
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* acquired through executing the queries in the test.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include "facility.h"
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#include "kvm_util.h"
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#define PLO_FUNCTION_MAX 256
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/* Query available CPU subfunctions */
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struct kvm_s390_vm_cpu_subfunc cpu_subfunc;
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static void get_cpu_machine_subfuntions(struct kvm_vm *vm,
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struct kvm_s390_vm_cpu_subfunc *cpu_subfunc)
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{
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int r;
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r = __kvm_device_attr_get(vm->fd, KVM_S390_VM_CPU_MODEL,
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KVM_S390_VM_CPU_MACHINE_SUBFUNC, cpu_subfunc);
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TEST_ASSERT(!r, "Get cpu subfunctions failed r=%d errno=%d", r, errno);
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}
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static inline int plo_test_bit(unsigned char nr)
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{
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unsigned long function = nr | 0x100;
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int cc;
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asm volatile(" lgr 0,%[function]\n"
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/* Parameter registers are ignored for "test bit" */
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" plo 0,0,0,0(0)\n"
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" ipm %0\n"
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" srl %0,28\n"
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: "=d" (cc)
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: [function] "d" (function)
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: "cc", "0");
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return cc == 0;
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}
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/* Testing Perform Locked Operation (PLO) CPU subfunction's ASM block */
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static void test_plo_asm_block(u8 (*query)[32])
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{
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for (int i = 0; i < PLO_FUNCTION_MAX; ++i) {
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if (plo_test_bit(i))
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(*query)[i >> 3] |= 0x80 >> (i & 7);
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}
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}
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/* Testing Crypto Compute Message Authentication Code (KMAC) CPU subfunction's ASM block */
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static void test_kmac_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb91e0000,0,2\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Cipher Message with Chaining (KMC) CPU subfunction's ASM block */
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static void test_kmc_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb92f0000,2,4\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Cipher Message (KM) CPU subfunction's ASM block */
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static void test_km_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb92e0000,2,4\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Compute Intermediate Message Digest (KIMD) CPU subfunction's ASM block */
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static void test_kimd_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb93e0000,0,2\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Compute Last Message Digest (KLMD) CPU subfunction's ASM block */
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static void test_klmd_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb93f0000,0,2\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Cipher Message with Counter (KMCTR) CPU subfunction's ASM block */
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static void test_kmctr_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rrf,0xb92d0000,2,4,6,0\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Cipher Message with Cipher Feedback (KMF) CPU subfunction's ASM block */
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static void test_kmf_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb92a0000,2,4\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Cipher Message with Output Feedback (KMO) CPU subfunction's ASM block */
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static void test_kmo_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb92b0000,2,4\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Perform Cryptographic Computation (PCC) CPU subfunction's ASM block */
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static void test_pcc_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb92c0000,0,0\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Perform Random Number Operation (PRNO) CPU subfunction's ASM block */
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static void test_prno_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb93c0000,2,4\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Cipher Message with Authentication (KMA) CPU subfunction's ASM block */
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static void test_kma_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rrf,0xb9290000,2,4,6,0\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Crypto Compute Digital Signature Authentication (KDSA) CPU subfunction's ASM block */
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static void test_kdsa_asm_block(u8 (*query)[16])
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{
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asm volatile(" la %%r1,%[query]\n"
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" xgr %%r0,%%r0\n"
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" .insn rre,0xb93a0000,0,2\n"
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: [query] "=R" (*query)
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:
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: "cc", "r0", "r1");
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}
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/* Testing Sort Lists (SORTL) CPU subfunction's ASM block */
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static void test_sortl_asm_block(u8 (*query)[32])
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{
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asm volatile(" lghi 0,0\n"
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" la 1,%[query]\n"
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" .insn rre,0xb9380000,2,4\n"
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: [query] "=R" (*query)
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:
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: "cc", "0", "1");
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}
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/* Testing Deflate Conversion Call (DFLTCC) CPU subfunction's ASM block */
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static void test_dfltcc_asm_block(u8 (*query)[32])
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{
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asm volatile(" lghi 0,0\n"
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" la 1,%[query]\n"
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" .insn rrf,0xb9390000,2,4,6,0\n"
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: [query] "=R" (*query)
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:
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: "cc", "0", "1");
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}
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/*
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* Testing Perform Function with Concurrent Results (PFCR)
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* CPU subfunctions's ASM block
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*/
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static void test_pfcr_asm_block(u8 (*query)[16])
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{
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asm volatile(" lghi 0,0\n"
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" .insn rsy,0xeb0000000016,0,0,%[query]\n"
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: [query] "=QS" (*query)
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:
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: "cc", "0");
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}
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typedef void (*testfunc_t)(u8 (*array)[]);
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struct testdef {
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const char *subfunc_name;
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u8 *subfunc_array;
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size_t array_size;
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testfunc_t test;
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int facility_bit;
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} testlist[] = {
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/*
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* PLO was introduced in the very first 64-bit machine generation.
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* Hence it is assumed PLO is always installed in Z Arch.
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*/
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{ "PLO", cpu_subfunc.plo, sizeof(cpu_subfunc.plo), test_plo_asm_block, 1 },
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/* MSA - Facility bit 17 */
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{ "KMAC", cpu_subfunc.kmac, sizeof(cpu_subfunc.kmac), test_kmac_asm_block, 17 },
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{ "KMC", cpu_subfunc.kmc, sizeof(cpu_subfunc.kmc), test_kmc_asm_block, 17 },
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{ "KM", cpu_subfunc.km, sizeof(cpu_subfunc.km), test_km_asm_block, 17 },
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{ "KIMD", cpu_subfunc.kimd, sizeof(cpu_subfunc.kimd), test_kimd_asm_block, 17 },
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{ "KLMD", cpu_subfunc.klmd, sizeof(cpu_subfunc.klmd), test_klmd_asm_block, 17 },
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/* MSA - Facility bit 77 */
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{ "KMCTR", cpu_subfunc.kmctr, sizeof(cpu_subfunc.kmctr), test_kmctr_asm_block, 77 },
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{ "KMF", cpu_subfunc.kmf, sizeof(cpu_subfunc.kmf), test_kmf_asm_block, 77 },
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{ "KMO", cpu_subfunc.kmo, sizeof(cpu_subfunc.kmo), test_kmo_asm_block, 77 },
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{ "PCC", cpu_subfunc.pcc, sizeof(cpu_subfunc.pcc), test_pcc_asm_block, 77 },
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/* MSA5 - Facility bit 57 */
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{ "PPNO", cpu_subfunc.ppno, sizeof(cpu_subfunc.ppno), test_prno_asm_block, 57 },
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/* MSA8 - Facility bit 146 */
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{ "KMA", cpu_subfunc.kma, sizeof(cpu_subfunc.kma), test_kma_asm_block, 146 },
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/* MSA9 - Facility bit 155 */
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{ "KDSA", cpu_subfunc.kdsa, sizeof(cpu_subfunc.kdsa), test_kdsa_asm_block, 155 },
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/* SORTL - Facility bit 150 */
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{ "SORTL", cpu_subfunc.sortl, sizeof(cpu_subfunc.sortl), test_sortl_asm_block, 150 },
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/* DFLTCC - Facility bit 151 */
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{ "DFLTCC", cpu_subfunc.dfltcc, sizeof(cpu_subfunc.dfltcc), test_dfltcc_asm_block, 151 },
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/* Concurrent-function facility - Facility bit 201 */
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{ "PFCR", cpu_subfunc.pfcr, sizeof(cpu_subfunc.pfcr), test_pfcr_asm_block, 201 },
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};
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int main(int argc, char *argv[])
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{
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struct kvm_vm *vm;
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int idx;
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ksft_print_header();
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vm = vm_create(1);
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memset(&cpu_subfunc, 0, sizeof(cpu_subfunc));
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get_cpu_machine_subfuntions(vm, &cpu_subfunc);
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ksft_set_plan(ARRAY_SIZE(testlist));
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for (idx = 0; idx < ARRAY_SIZE(testlist); idx++) {
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if (test_facility(testlist[idx].facility_bit)) {
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u8 *array = malloc(testlist[idx].array_size);
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testlist[idx].test((u8 (*)[testlist[idx].array_size])array);
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TEST_ASSERT_EQ(memcmp(testlist[idx].subfunc_array,
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array, testlist[idx].array_size), 0);
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ksft_test_result_pass("%s\n", testlist[idx].subfunc_name);
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free(array);
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} else {
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ksft_test_result_skip("%s feature is not avaialable\n",
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testlist[idx].subfunc_name);
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}
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}
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kvm_vm_free(vm);
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ksft_finished();
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}
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