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s390: report more CPU capabilities

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Add hardware capability bits and feature tags to /proc/cpuinfo
for NNPA and Vector-Packed-Decimal-Enhancement Facility 2.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2021-01-13 14:14:01 +01:00
parent 0d374381d0
commit b3bc7980f4
3 changed files with 7 additions and 1 deletions
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2
arch/s390/include/asm/elf.h
View file

@ -111,6 +111,8 @@
#define HWCAP_S390_VXRS_PDE 65536
#define HWCAP_S390_SORT 131072
#define HWCAP_S390_DFLT 262144
#define HWCAP_S390_VXRS_PDE2 524288
#define HWCAP_S390_NNPA 1048576
/* Internal bits, not exposed via elf */
#define HWCAP_INT_SIE 1UL

2
arch/s390/kernel/processor.c
View file

@ -115,7 +115,7 @@ static void show_cpu_summary(struct seq_file *m, void *v)
static const char *hwcap_str[] = {
"esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
"edat", "etf3eh", "highgprs", "te", "vx", "vxd", "vxe", "gs",
"vxe2", "vxp", "sort", "dflt"
"vxe2", "vxp", "sort", "dflt", "vxp2", "nnpa"
};
static const char * const int_hwcap_str[] = {
"sie"

4
arch/s390/kernel/setup.c
View file

@ -949,11 +949,15 @@ static int __init setup_hwcaps(void)
elf_hwcap |= HWCAP_S390_VXRS_EXT2;
if (test_facility(152))
elf_hwcap |= HWCAP_S390_VXRS_PDE;
if (test_facility(192))
elf_hwcap |= HWCAP_S390_VXRS_PDE2;
}
if (test_facility(150))
elf_hwcap |= HWCAP_S390_SORT;
if (test_facility(151))
elf_hwcap |= HWCAP_S390_DFLT;
if (test_facility(165))
elf_hwcap |= HWCAP_S390_NNPA;
/*
* Guarded storage support HWCAP_S390_GS is bit 12.