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| author | delphij <delphij@FreeBSD.org> | 2005-07-02 20:06:44 +0000 |
|---|---|---|
| committer | delphij <delphij@FreeBSD.org> | 2005-07-02 20:06:44 +0000 |
| commit | 019106f6e576eb8e05e7b5b562d7115dd05ba567 (patch) | |
| tree | f712cf3be64a135dbc1f4e04704add0988835f8e /sys/pc98 | |
| parent | 696ddfbe750f1c4366a789f2a656f2ff955fd9d8 (diff) | |
| download | FreeBSD-src-019106f6e576eb8e05e7b5b562d7115dd05ba567.zip FreeBSD-src-019106f6e576eb8e05e7b5b562d7115dd05ba567.tar.gz | |
Remove the CPU_ENABLE_SSE option from the i386 and pc98 architectures,
as they are already default for I686_CPU for almost 3 years, and
CPU_DISABLE_SSE always disables it. On the other hand, CPU_ENABLE_SSE
does not work for I486_CPU and I586_CPU.
This commit has:
- Removed the option from conf/options.*
- Removed the option and comments from MD NOTES files
- Simplified the CPU_ENABLE_SSE ifdef's so they don't
deal with CPU_ENABLE_SSE from kernel configuration. (*)
For most users, this commit should be largely no-op. If you used to
place CPU_ENABLE_SSE into your kernel configuration for some reason,
it is time to remove it.
(*) The ifdef's of CPU_ENABLE_SSE are not removed at this point, since
we need to change it to !defined(CPU_DISABLE_SSE) && defined(I686_CPU),
not just !defined(CPU_DISABLE_SSE), if we really want to do so.
Discussed on: -arch
Approved by: re (scottl)
Diffstat (limited to 'sys/pc98')
| -rw-r--r-- | sys/pc98/conf/NOTES | 4 | ||||
| -rw-r--r-- | sys/pc98/pc98/machdep.c | 5 |
2 files changed, 1 insertions, 8 deletions
diff --git a/sys/pc98/conf/NOTES b/sys/pc98/conf/NOTES index 86f1426..dcac1e7 100644 --- a/sys/pc98/conf/NOTES +++ b/sys/pc98/conf/NOTES @@ -88,9 +88,6 @@ cpu I686_CPU # aka Pentium Pro(tm) # # CPU_DISABLE_SSE explicitly prevents I686_CPU from turning on SSE. # -# CPU_ENABLE_SSE enables SSE/MMX2 instructions support. This is default -# on I686_CPU and above. -# # CPU_FASTER_5X86_FPU enables faster FPU exception handler. # # CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products @@ -156,7 +153,6 @@ options CPU_DIRECT_MAPPED_CACHE options CPU_DISABLE_5X86_LSSER options CPU_DISABLE_CMPXCHG #options CPU_DISABLE_SSE -options CPU_ENABLE_SSE options CPU_FASTER_5X86_FPU options CPU_I486_ON_386 options CPU_IORT diff --git a/sys/pc98/pc98/machdep.c b/sys/pc98/pc98/machdep.c index fa9c058..5c2fa32 100644 --- a/sys/pc98/pc98/machdep.c +++ b/sys/pc98/pc98/machdep.c @@ -147,12 +147,9 @@ extern void initializecpu(void); #define CS_SECURE(cs) (ISPL(cs) == SEL_UPL) #define EFL_SECURE(ef, oef) ((((ef) ^ (oef)) & ~PSL_USERCHANGE) == 0) -#if !defined(CPU_ENABLE_SSE) && defined(I686_CPU) +#if !defined(CPU_DISABLE_SSE) && defined(I686_CPU) #define CPU_ENABLE_SSE #endif -#if defined(CPU_DISABLE_SSE) -#undef CPU_ENABLE_SSE -#endif static void cpu_startup(void *); static void fpstate_drop(struct thread *td); |
