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KVM: s390: selftests: Add regression tests for PFCR subfunctions

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Check if the PFCR query reported in userspace coincides with the
kernel reported function list. Right now we don't mask the functions
in the kernel so they have to be the same.

Signed-off-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Reviewed-by: Hariharan Mari <hari55@linux.ibm.com>
Link: https://lore.kernel.org/r/20241107152319.77816-5-brueckner@linux.ibm.com
[frankja@linux.ibm.com: Added commit description]
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Message-ID: <20241107152319.77816-5-brueckner@linux.ibm.com>
This commit is contained in:
Hendrik Brueckner 2024-11-07 16:23:19 +01:00 committed by Janosch Frank
parent 85a9e680d4
commit 7a1f314337
2 changed files with 17 additions and 1 deletions
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3
tools/arch/s390/include/uapi/asm/kvm.h
View File

@ -469,7 +469,8 @@ struct kvm_s390_vm_cpu_subfunc {
__u8 kdsa[16]; /* with MSA9 */ __u8 kdsa[16]; /* with MSA9 */
__u8 sortl[32]; /* with STFLE.150 */ __u8 sortl[32]; /* with STFLE.150 */
__u8 dfltcc[32]; /* with STFLE.151 */ __u8 dfltcc[32]; /* with STFLE.151 */
__u8 reserved[1728]; __u8 pfcr[16]; /* with STFLE.201 */
__u8 reserved[1712];
}; };
#define KVM_S390_VM_CPU_PROCESSOR_UV_FEAT_GUEST 6 #define KVM_S390_VM_CPU_PROCESSOR_UV_FEAT_GUEST 6

15
tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c
View File

@ -214,6 +214,19 @@ static void test_dfltcc_asm_block(u8 (*query)[32])
: "cc", "0", "1"); : "cc", "0", "1");
} }
/*
* Testing Perform Function with Concurrent Results (PFCR)
* CPU subfunctions's ASM block
*/
static void test_pfcr_asm_block(u8 (*query)[16])
{
asm volatile(" lghi 0,0\n"
" .insn rsy,0xeb0000000016,0,0,%[query]\n"
: [query] "=QS" (*query)
:
: "cc", "0");
}
typedef void (*testfunc_t)(u8 (*array)[]); typedef void (*testfunc_t)(u8 (*array)[]);
struct testdef { struct testdef {
@ -249,6 +262,8 @@ struct testdef {
{ "SORTL", cpu_subfunc.sortl, sizeof(cpu_subfunc.sortl), test_sortl_asm_block, 150 }, { "SORTL", cpu_subfunc.sortl, sizeof(cpu_subfunc.sortl), test_sortl_asm_block, 150 },
/* DFLTCC - Facility bit 151 */ /* DFLTCC - Facility bit 151 */
{ "DFLTCC", cpu_subfunc.dfltcc, sizeof(cpu_subfunc.dfltcc), test_dfltcc_asm_block, 151 }, { "DFLTCC", cpu_subfunc.dfltcc, sizeof(cpu_subfunc.dfltcc), test_dfltcc_asm_block, 151 },
/* Concurrent-function facility - Facility bit 201 */
{ "PFCR", cpu_subfunc.pfcr, sizeof(cpu_subfunc.pfcr), test_pfcr_asm_block, 201 },
}; };
int main(int argc, char *argv[]) int main(int argc, char *argv[])