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| author | Michael Ellerman <mpe@ellerman.id.au> | 2020-09-14 22:57:18 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-09-14 22:57:18 +1000 |
| commit | 960e3708135ac8b03ef3d1fa773e369cfacc76b9 (patch) | |
| tree | 3b3b679d211377a291a55fb9598d1c7f408aeab9 /arch/powerpc/kernel/process.c | |
| parent | dc462267d2d7aacffc3c1d99b02d7a7c59db7c66 (diff) | |
| parent | 0460534b532e5518c657c7d6492b9337d975eaa3 (diff) | |
Merge branch 'fixes' into next
Bring in our fixes branch for this cycle which avoids some small
conflicts with upcoming commits.
Diffstat (limited to 'arch/powerpc/kernel/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 2a6fadde58b4..142680e885ad 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -548,7 +548,7 @@ void notrace restore_math(struct pt_regs *regs) * are live for the user thread). */ if ((!(msr & MSR_FP)) && should_restore_fp()) - new_msr |= MSR_FP | current->thread.fpexc_mode; + new_msr |= MSR_FP; if ((!(msr & MSR_VEC)) && should_restore_altivec()) new_msr |= MSR_VEC; @@ -559,11 +559,17 @@ void notrace restore_math(struct pt_regs *regs) } if (new_msr) { + unsigned long fpexc_mode = 0; + msr_check_and_set(new_msr); - if (new_msr & MSR_FP) + if (new_msr & MSR_FP) { do_restore_fp(); + // This also covers VSX, because VSX implies FP + fpexc_mode = current->thread.fpexc_mode; + } + if (new_msr & MSR_VEC) do_restore_altivec(); @@ -572,7 +578,7 @@ void notrace restore_math(struct pt_regs *regs) msr_check_and_clear(new_msr); - regs->msr |= new_msr; + regs->msr |= new_msr | fpexc_mode; } } #endif |