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Commit 2583b848 authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

s390: report new vector facilities 



Add hardware capability bits and feature tags to /proc/cpuinfo for
the "Vector Packed Decimal Facility" (tag "vxd" / hwcap bit 2^12)
and the "Vector Enhancements Facility 1" (tag "vxe" / hwcap bit 2^13).

Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 4920e3cf

arch/s390/include/asm/elf.h

+2 −0
Original line number Diff line number Diff line
@@ -103,6 +103,8 @@ 
#define HWCAP_S390_HIGH_GPRS	512

#define HWCAP_S390_TE		1024

#define HWCAP_S390_VXRS		2048

#define HWCAP_S390_VXRS_BCD	4096

#define HWCAP_S390_VXRS_EXT	8192



/* Internal bits, not exposed via elf */

#define HWCAP_INT_SIE		1UL

arch/s390/kernel/processor.c

+1 −1
Original line number Diff line number Diff line
@@ -92,7 +92,7 @@ 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"

		"edat", "etf3eh", "highgprs", "te", "vx", "vxd", "vxe"

	};

	static const char * const int_hwcap_str[] = {

		"sie"

arch/s390/kernel/setup.c

+7 −1
Original line number Diff line number Diff line
@@ -769,8 +769,14 @@ static int __init setup_hwcaps(void) 
	 * can be disabled with the "novx" parameter. Use MACHINE_HAS_VX

	 * instead of facility bit 129.

	 */

	if (MACHINE_HAS_VX)

	if (MACHINE_HAS_VX) {

		elf_hwcap |= HWCAP_S390_VXRS;

		if (test_facility(134))

			elf_hwcap |= HWCAP_S390_VXRS_EXT;

		if (test_facility(135))

			elf_hwcap |= HWCAP_S390_VXRS_BCD;

	}



	get_cpu_id(&cpu_id);

	add_device_randomness(&cpu_id, sizeof(cpu_id));

	switch (cpu_id.machine) {