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| author | Andreas Schwab <schwab@linux-m68k.org> | 2010-08-21 13:43:20 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-09-02 06:07:32 +0200 |
| commit | 05d77ac90c0d260ae18decd70507dc4f5b71a2cb (patch) | |
| tree | 84cca10e89f60d8530d9951e8e20931329154ef2 /arch/powerpc/kernel/fpu.S | |
| parent | powerpc/pseries: Re-enable dispatch trace log userspace interface (diff) | |
| download | linux-05d77ac90c0d260ae18decd70507dc4f5b71a2cb.tar.xz linux-05d77ac90c0d260ae18decd70507dc4f5b71a2cb.zip | |
powerpc: Remove fpscr use from [kvm_]cvt_{fd,df}
Neither lfs nor stfs touch the fpscr, so remove the restore/save of it
around them.
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/fpu.S')
| -rw-r--r-- | arch/powerpc/kernel/fpu.S | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S index fc8f5b14019c..e86c040ae585 100644 --- a/arch/powerpc/kernel/fpu.S +++ b/arch/powerpc/kernel/fpu.S @@ -163,24 +163,14 @@ END_FTR_SECTION_IFSET(CPU_FTR_VSX) /* * These are used in the alignment trap handler when emulating * single-precision loads and stores. - * We restore and save the fpscr so the task gets the same result - * and exceptions as if the cpu had performed the load or store. */ _GLOBAL(cvt_fd) - lfd 0,THREAD_FPSCR(r5) /* load up fpscr value */ - MTFSF_L(0) lfs 0,0(r3) stfd 0,0(r4) - mffs 0 - stfd 0,THREAD_FPSCR(r5) /* save new fpscr value */ blr _GLOBAL(cvt_df) - lfd 0,THREAD_FPSCR(r5) /* load up fpscr value */ - MTFSF_L(0) lfd 0,0(r3) stfs 0,0(r4) - mffs 0 - stfd 0,THREAD_FPSCR(r5) /* save new fpscr value */ blr |