diff options
Diffstat (limited to 'arch/mips/kernel/fpu-probe.c')
| -rw-r--r-- | arch/mips/kernel/fpu-probe.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/mips/kernel/fpu-probe.c b/arch/mips/kernel/fpu-probe.c index e689d6a83234..6bf3f19b1c33 100644 --- a/arch/mips/kernel/fpu-probe.c +++ b/arch/mips/kernel/fpu-probe.c @@ -144,7 +144,7 @@ static void cpu_set_fpu_2008(struct cpuinfo_mips *c) * IEEE 754 conformance mode to use. Affects the NaN encoding and the * ABS.fmt/NEG.fmt execution mode. */ -static enum { STRICT, LEGACY, STD2008, RELAXED } ieee754 = STRICT; +static enum { STRICT, EMULATED, LEGACY, STD2008, RELAXED } ieee754 = STRICT; /* * Set the IEEE 754 NaN encodings and the ABS.fmt/NEG.fmt execution modes @@ -160,6 +160,7 @@ static void cpu_set_nofpu_2008(struct cpuinfo_mips *c) switch (ieee754) { case STRICT: + case EMULATED: if (c->isa_level & (MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M64R1 | MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M64R2 | MIPS_CPU_ISA_M32R5 | MIPS_CPU_ISA_M64R5 | @@ -204,6 +205,10 @@ static void cpu_set_nan_2008(struct cpuinfo_mips *c) mips_use_nan_legacy = !cpu_has_nan_2008; mips_use_nan_2008 = !!cpu_has_nan_2008; break; + case EMULATED: + /* Pretend ABS2008/NAN2008 options are dynamic */ + c->fpu_msk31 &= ~(FPU_CSR_NAN2008 | FPU_CSR_ABS2008); + fallthrough; case RELAXED: mips_use_nan_legacy = true; mips_use_nan_2008 = true; @@ -226,6 +231,8 @@ static int __init ieee754_setup(char *s) return -1; else if (!strcmp(s, "strict")) ieee754 = STRICT; + else if (!strcmp(s, "emulated")) + ieee754 = EMULATED; else if (!strcmp(s, "legacy")) ieee754 = LEGACY; else if (!strcmp(s, "2008")) |