leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

s390: report more CPU capabilities

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/s390/include/asm/elf.h
View File

@@ -111,6 +111,8 @@
#define HWCAP_S390_VXRS_PDE 65536 #define HWCAP_S390_VXRS_PDE 65536
#define HWCAP_S390_SORT 131072 #define HWCAP_S390_SORT 131072
#define HWCAP_S390_DFLT 262144 #define HWCAP_S390_DFLT 262144
#define HWCAP_S390_VXRS_PDE2 524288
#define HWCAP_S390_NNPA 1048576
/* Internal bits, not exposed via elf */ /* Internal bits, not exposed via elf */
#define HWCAP_INT_SIE 1UL #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[] = { static const char *hwcap_str[] = {
"esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp", "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
"edat", "etf3eh", "highgprs", "te", "vx", "vxd", "vxe", "gs", "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[] = { static const char * const int_hwcap_str[] = {
"sie" "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; elf_hwcap |= HWCAP_S390_VXRS_EXT2;
if (test_facility(152)) if (test_facility(152))
elf_hwcap |= HWCAP_S390_VXRS_PDE; elf_hwcap |= HWCAP_S390_VXRS_PDE;
if (test_facility(192))
elf_hwcap |= HWCAP_S390_VXRS_PDE2;
} }
if (test_facility(150)) if (test_facility(150))
elf_hwcap |= HWCAP_S390_SORT; elf_hwcap |= HWCAP_S390_SORT;
if (test_facility(151)) if (test_facility(151))
elf_hwcap |= HWCAP_S390_DFLT; elf_hwcap |= HWCAP_S390_DFLT;
if (test_facility(165))
elf_hwcap |= HWCAP_S390_NNPA;
/* /*
* Guarded storage support HWCAP_S390_GS is bit 12. * Guarded storage support HWCAP_S390_GS is bit 12.