forked from Minki/linux
8aa8680aa3
The code in arch/s390/crypto checks for the availability of the 'message security assist' facility on its own, either by using module_cpu_feature_match(MSA, ...) or by checking the facility bit during cpacf_query(). Thus setting the MSA facility bit in gen_facilities.c as hard requirement is not necessary. We can remove it here, so that the kernel can also run on systems that do not provide the MSA facility yet (like the emulated environment of QEMU, for example). Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
139 lines
3.4 KiB
C
139 lines
3.4 KiB
C
/*
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* Simple program to generate defines out of facility lists that use the bit
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* numbering scheme from the Princples of Operations: most significant bit
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* has bit number 0.
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*
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* Copyright IBM Corp. 2015
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*
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*/
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#include <strings.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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struct facility_def {
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char *name;
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int *bits;
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};
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static struct facility_def facility_defs[] = {
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{
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/*
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* FACILITIES_ALS contains the list of facilities that are
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* required to run a kernel that is compiled e.g. with
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* -march=<machine>.
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*/
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.name = "FACILITIES_ALS",
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.bits = (int[]){
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#ifdef CONFIG_HAVE_MARCH_Z900_FEATURES
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0, /* N3 instructions */
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1, /* z/Arch mode installed */
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#endif
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#ifdef CONFIG_HAVE_MARCH_Z990_FEATURES
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18, /* long displacement facility */
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#endif
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#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES
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7, /* stfle */
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21, /* extended-immediate facility */
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25, /* store clock fast */
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#endif
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#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
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27, /* mvcos */
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32, /* compare and swap and store */
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33, /* compare and swap and store 2 */
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34, /* general extension facility */
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35, /* execute extensions */
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#endif
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#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
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45, /* fast-BCR, etc. */
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#endif
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#ifdef CONFIG_HAVE_MARCH_ZEC12_FEATURES
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49, /* misc-instruction-extensions */
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52, /* interlocked facility 2 */
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#endif
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#ifdef CONFIG_HAVE_MARCH_Z13_FEATURES
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53, /* load-and-zero-rightmost-byte, etc. */
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#endif
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-1 /* END */
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}
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},
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{
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.name = "FACILITIES_KVM",
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.bits = (int[]){
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0, /* N3 instructions */
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1, /* z/Arch mode installed */
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2, /* z/Arch mode active */
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3, /* DAT-enhancement */
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4, /* idte segment table */
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5, /* idte region table */
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6, /* ASN-and-LX reuse */
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7, /* stfle */
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8, /* enhanced-DAT 1 */
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9, /* sense-running-status */
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10, /* conditional sske */
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13, /* ipte-range */
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14, /* nonquiescing key-setting */
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73, /* transactional execution */
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75, /* access-exception-fetch/store indication */
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76, /* msa extension 3 */
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77, /* msa extension 4 */
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78, /* enhanced-DAT 2 */
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130, /* instruction-execution-protection */
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131, /* enhanced-SOP 2 and side-effect */
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146, /* msa extension 8 */
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-1 /* END */
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}
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},
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};
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static void print_facility_list(struct facility_def *def)
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{
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unsigned int high, bit, dword, i;
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unsigned long long *array;
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array = calloc(1, 8);
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if (!array)
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exit(EXIT_FAILURE);
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high = 0;
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for (i = 0; def->bits[i] != -1; i++) {
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bit = 63 - (def->bits[i] & 63);
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dword = def->bits[i] / 64;
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if (dword > high) {
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array = realloc(array, (dword + 1) * 8);
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if (!array)
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exit(EXIT_FAILURE);
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memset(array + high + 1, 0, (dword - high) * 8);
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high = dword;
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}
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array[dword] |= 1ULL << bit;
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}
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printf("#define %s ", def->name);
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for (i = 0; i <= high; i++)
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printf("_AC(0x%016llx,UL)%c", array[i], i < high ? ',' : '\n');
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free(array);
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}
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static void print_facility_lists(void)
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{
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unsigned int i;
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for (i = 0; i < sizeof(facility_defs) / sizeof(facility_defs[0]); i++)
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print_facility_list(&facility_defs[i]);
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}
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int main(int argc, char **argv)
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{
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printf("#ifndef __ASM_S390_FACILITIES__\n");
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printf("#define __ASM_S390_FACILITIES__\n");
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printf("/*\n");
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printf(" * DO NOT MODIFY.\n");
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printf(" *\n");
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printf(" * This file was generated by %s\n", __FILE__);
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printf(" */\n\n");
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printf("#include <linux/const.h>\n\n");
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print_facility_lists();
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printf("\n#endif\n");
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return 0;
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}
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