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Merge remote-tracking branch 'scott/next' into next

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Freescale updates from Scott:

<<
Highlights include 32-bit booke relocatable support, e6500 hardware
tablewalk support, various e500 SPE fixes, some new/revived boards, and
e6500 deeper idle and altivec powerdown modes.
>>
This commit is contained in:
Benjamin Herrenschmidt
2014-01-15 14:22:35 +11:00
parent 3ac8ff1c47 d064f30e50
commit fac515db45
81 changed files with 3155 additions and 615 deletions
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30
arch/powerpc/kernel/process.c
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@@ -1296,6 +1296,19 @@ int set_fpexc_mode(struct task_struct *tsk, unsigned int val)
if (val & PR_FP_EXC_SW_ENABLE) {
#ifdef CONFIG_SPE
if (cpu_has_feature(CPU_FTR_SPE)) {
/*
* When the sticky exception bits are set
* directly by userspace, it must call prctl
* with PR_GET_FPEXC (with PR_FP_EXC_SW_ENABLE
* in the existing prctl settings) or
* PR_SET_FPEXC (with PR_FP_EXC_SW_ENABLE in
* the bits being set). <fenv.h> functions
* saving and restoring the whole
* floating-point environment need to do so
* anyway to restore the prctl settings from
* the saved environment.
*/
tsk->thread.spefscr_last = mfspr(SPRN_SPEFSCR);
tsk->thread.fpexc_mode = val &
(PR_FP_EXC_SW_ENABLE | PR_FP_ALL_EXCEPT);
return 0;
@@ -1327,9 +1340,22 @@ int get_fpexc_mode(struct task_struct *tsk, unsigned long adr)
if (tsk->thread.fpexc_mode & PR_FP_EXC_SW_ENABLE)
#ifdef CONFIG_SPE
if (cpu_has_feature(CPU_FTR_SPE))
if (cpu_has_feature(CPU_FTR_SPE)) {
/*
* When the sticky exception bits are set
* directly by userspace, it must call prctl
* with PR_GET_FPEXC (with PR_FP_EXC_SW_ENABLE
* in the existing prctl settings) or
* PR_SET_FPEXC (with PR_FP_EXC_SW_ENABLE in
* the bits being set). <fenv.h> functions
* saving and restoring the whole
* floating-point environment need to do so
* anyway to restore the prctl settings from
* the saved environment.
*/
tsk->thread.spefscr_last = mfspr(SPRN_SPEFSCR);
val = tsk->thread.fpexc_mode;
else
} else
return -EINVAL;
#else
return -EINVAL;