redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

MIPS: Correct `nofpu' non-functionality 

The `cpu_has_fpu' feature flag must not be hardcoded to 1 or the `nofpu'
kernel option will be ignored.  Remove any such overrides and add a
cautionary note.  Hardcoding to 0 is fine for FPU-less platforms.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9694/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
hifive-unleashed-5.1
Maciej W. Rozycki 2015-04-03 23:26:04 +01:00 committed by Ralf Baechle
parent e06b530b92
commit 18a2c2c6b9
7 changed files with 1 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/mips/include/asm/cpu-features.h
View File

@ -68,6 +68,7 @@
#ifndef cpu_has_octeon_cache
#define cpu_has_octeon_cache 0
#endif
/* Don't override `cpu_has_fpu' to 1 or the "nofpu" option won't work. */
#ifndef cpu_has_fpu
#define cpu_has_fpu (current_cpu_data.options & MIPS_CPU_FPU)
#define raw_cpu_has_fpu (raw_current_cpu_data.options & MIPS_CPU_FPU)

1
arch/mips/include/asm/mach-cobalt/cpu-feature-overrides.h
View File

@ -14,7 +14,6 @@
#define cpu_has_3k_cache 0
#define cpu_has_4k_cache 1
#define cpu_has_tx39_cache 0
#define cpu_has_fpu 1
#define cpu_has_32fpr 1
#define cpu_has_counter 1
#define cpu_has_watch 0

1
arch/mips/include/asm/mach-dec/cpu-feature-overrides.h
View File

@ -15,7 +15,6 @@
/* Generic ones first. */
#define cpu_has_tlb 1
#define cpu_has_tx39_cache 0
#define cpu_has_fpu 1
#define cpu_has_divec 0
#define cpu_has_prefetch 0
#define cpu_has_mcheck 0

1
arch/mips/include/asm/mach-ip22/cpu-feature-overrides.h
View File

@ -16,7 +16,6 @@
#define cpu_has_tlb 1
#define cpu_has_4kex 1
#define cpu_has_4k_cache 1
#define cpu_has_fpu 1
#define cpu_has_32fpr 1
#define cpu_has_counter 1
#define cpu_has_mips16 0

1
arch/mips/include/asm/mach-ip32/cpu-feature-overrides.h
View File

@ -26,7 +26,6 @@
/* Settings which are common for all ip32 CPUs */
#define cpu_has_tlb 1
#define cpu_has_4kex 1
#define cpu_has_fpu 1
#define cpu_has_32fpr 1
#define cpu_has_counter 1
#define cpu_has_mips16 0

1
arch/mips/include/asm/mach-loongson/cpu-feature-overrides.h
View File

@ -34,7 +34,6 @@
#define cpu_has_dsp 0
#define cpu_has_dsp2 0
#define cpu_has_ejtag 0
#define cpu_has_fpu 1
#define cpu_has_ic_fills_f_dc 0
#define cpu_has_inclusive_pcaches 1
#define cpu_has_llsc 1

1
arch/mips/include/asm/mach-rm/cpu-feature-overrides.h
View File

@ -15,7 +15,6 @@
#define cpu_has_tlb 1
#define cpu_has_4kex 1
#define cpu_has_4k_cache 1
#define cpu_has_fpu 1
#define cpu_has_32fpr 1
#define cpu_has_counter 1
#define cpu_has_watch 0