linux/arch/s390/tools/gen_facilities.c
Christian Borntraeger 13209ad039 KVM: s390: add MSA9 to cpumodel
This enables stfle.155 and adds the subfunctions for KDSA. Bit 155 is
added to the list of facilities that will be enabled when there is no
cpu model involved as MSA9 requires no additional handling from
userspace, e.g. for migration.

Please note that a cpu model enabled user space can and will have the
final decision on the facility bits for a guests.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
2019-04-18 10:14:11 +02:00

167 lines
4.3 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Simple program to generate defines out of facility lists that use the bit
* numbering scheme from the Princples of Operations: most significant bit
* has bit number 0.
*
* Copyright IBM Corp. 2015, 2018
*
*/
#include <strings.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
struct facility_def {
char *name;
int *bits;
};
static struct facility_def facility_defs[] = {
{
/*
* FACILITIES_ALS contains the list of facilities that are
* required to run a kernel that is compiled e.g. with
* -march=<machine>.
*/
.name = "FACILITIES_ALS",
.bits = (int[]){
#ifdef CONFIG_HAVE_MARCH_Z900_FEATURES
0, /* N3 instructions */
1, /* z/Arch mode installed */
#endif
#ifdef CONFIG_HAVE_MARCH_Z990_FEATURES
18, /* long displacement facility */
#endif
#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES
21, /* extended-immediate facility */
25, /* store clock fast */
#endif
#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
27, /* mvcos */
32, /* compare and swap and store */
33, /* compare and swap and store 2 */
34, /* general instructions extension */
35, /* execute extensions */
#endif
#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
45, /* fast-BCR, etc. */
#endif
#ifdef CONFIG_HAVE_MARCH_ZEC12_FEATURES
49, /* misc-instruction-extensions */
52, /* interlocked facility 2 */
#endif
#ifdef CONFIG_HAVE_MARCH_Z13_FEATURES
53, /* load-and-zero-rightmost-byte, etc. */
#endif
#ifdef CONFIG_HAVE_MARCH_Z14_FEATURES
58, /* miscellaneous-instruction-extension 2 */
#endif
-1 /* END */
}
},
{
/*
* FACILITIES_KVM contains the list of facilities that are part
* of the default facility mask and list that are passed to the
* initial CPU model. If no CPU model is used, this, together
* with the non-hypervisor managed bits, is the maximum list of
* guest facilities supported by KVM.
*/
.name = "FACILITIES_KVM",
.bits = (int[]){
0, /* N3 instructions */
1, /* z/Arch mode installed */
2, /* z/Arch mode active */
3, /* DAT-enhancement */
4, /* idte segment table */
5, /* idte region table */
6, /* ASN-and-LX reuse */
7, /* stfle */
8, /* enhanced-DAT 1 */
9, /* sense-running-status */
10, /* conditional sske */
13, /* ipte-range */
14, /* nonquiescing key-setting */
73, /* transactional execution */
75, /* access-exception-fetch/store indication */
76, /* msa extension 3 */
77, /* msa extension 4 */
78, /* enhanced-DAT 2 */
130, /* instruction-execution-protection */
131, /* enhanced-SOP 2 and side-effect */
139, /* multiple epoch facility */
146, /* msa extension 8 */
155, /* msa extension 9 */
-1 /* END */
}
},
{
/*
* FACILITIES_KVM_CPUMODEL contains the list of facilities
* that can be enabled by CPU model code if the host supports
* it. These facilities are not passed to the guest without
* CPU model support.
*/
.name = "FACILITIES_KVM_CPUMODEL",
.bits = (int[]){
12, /* AP Query Configuration Information */
15, /* AP Facilities Test */
156, /* etoken facility */
-1 /* END */
}
},
};
static void print_facility_list(struct facility_def *def)
{
unsigned int high, bit, dword, i;
unsigned long long *array;
array = calloc(1, 8);
if (!array)
exit(EXIT_FAILURE);
high = 0;
for (i = 0; def->bits[i] != -1; i++) {
bit = 63 - (def->bits[i] & 63);
dword = def->bits[i] / 64;
if (dword > high) {
array = realloc(array, (dword + 1) * 8);
if (!array)
exit(EXIT_FAILURE);
memset(array + high + 1, 0, (dword - high) * 8);
high = dword;
}
array[dword] |= 1ULL << bit;
}
printf("#define %s ", def->name);
for (i = 0; i <= high; i++)
printf("_AC(0x%016llx,UL)%c", array[i], i < high ? ',' : '\n');
free(array);
}
static void print_facility_lists(void)
{
unsigned int i;
for (i = 0; i < sizeof(facility_defs) / sizeof(facility_defs[0]); i++)
print_facility_list(&facility_defs[i]);
}
int main(int argc, char **argv)
{
printf("#ifndef __ASM_S390_FACILITY_DEFS__\n");
printf("#define __ASM_S390_FACILITY_DEFS__\n");
printf("/*\n");
printf(" * DO NOT MODIFY.\n");
printf(" *\n");
printf(" * This file was generated by %s\n", __FILE__);
printf(" */\n\n");
printf("#include <linux/const.h>\n\n");
print_facility_lists();
printf("\n#endif\n");
return 0;
}