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s390/fpu: remove "novx" option

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Remove the "novx" kernel command line option: the vector code runs
without any problems since many years.

Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2023-12-01 15:42:17 +01:00 committed by Alexander Gordeev
parent d7f679ec86
commit af6ed37eb0
2 changed files with 1 additions and 12 deletions
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8
arch/s390/kernel/early.c
View File

@ -271,14 +271,6 @@ static inline void setup_access_registers(void)
restore_access_regs(acrs);
}
static int __init disable_vector_extension(char *str)
{
S390_lowcore.machine_flags &= ~MACHINE_FLAG_VX;
system_ctl_clear_bit(0, CR0_VECTOR_BIT);
return 0;
}
early_param("novx", disable_vector_extension);
char __bootdata(early_command_line)[COMMAND_LINE_SIZE];
static void __init setup_boot_command_line(void)
{

5
arch/s390/kernel/processor.c
View File

@ -201,10 +201,7 @@ static int __init setup_hwcaps(void)
if (MACHINE_HAS_TE)
elf_hwcap |= HWCAP_TE;
/*
* Vector extension can be disabled with the "novx" parameter.
* Use MACHINE_HAS_VX instead of facility bit 129.
*/
/* Use MACHINE_HAS_VX instead of facility bit 129. */
if (MACHINE_HAS_VX) {
elf_hwcap |= HWCAP_VXRS;
if (test_facility(134))