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Diffstat (limited to 'arch/powerpc/kernel/signal_64.c')
-rw-r--r--arch/powerpc/kernel/signal_64.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index b2c002993d78..4b9ca3570344 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -214,6 +214,8 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc,
BUG_ON(!MSR_TM_ACTIVE(regs->msr));
+ WARN_ON(tm_suspend_disabled);
+
/* Remove TM bits from thread's MSR. The MSR in the sigcontext
* just indicates to userland that we were doing a transaction, but we
* don't want to return in transactional state. This also ensures
@@ -430,6 +432,9 @@ static long restore_tm_sigcontexts(struct task_struct *tsk,
BUG_ON(tsk != current);
+ if (tm_suspend_disabled)
+ return -EINVAL;
+
/* copy the GPRs */
err |= __copy_from_user(regs->gpr, tm_sc->gp_regs, sizeof(regs->gpr));
err |= __copy_from_user(&tsk->thread.ckpt_regs, sc->gp_regs,
@@ -558,7 +563,7 @@ static long restore_tm_sigcontexts(struct task_struct *tsk,
/* Make sure the transaction is marked as failed */
tsk->thread.tm_texasr |= TEXASR_FS;
/* This loads the checkpointed FP/VEC state, if used */
- tm_recheckpoint(&tsk->thread, msr);
+ tm_recheckpoint(&tsk->thread);
msr_check_and_set(msr & (MSR_FP | MSR_VEC));
if (msr & MSR_FP) {