diff options
Diffstat (limited to 'arch/x86/kernel/process_32.c')
| -rw-r--r-- | arch/x86/kernel/process_32.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c index d9905c9d0fd..d5462f228da 100644 --- a/arch/x86/kernel/process_32.c +++ b/arch/x86/kernel/process_32.c @@ -602,10 +602,14 @@ static noinline void __switch_to_xtra(struct task_struct *prev_p, struct task_struct *next_p, struct tss_struct *tss) { - struct thread_struct *next; + struct thread_struct *prev, *next; + prev = &prev_p->thread; next = &next_p->thread; + if (next->debugctlmsr != prev->debugctlmsr) + wrmsr(MSR_IA32_DEBUGCTLMSR, next->debugctlmsr, 0); + if (test_tsk_thread_flag(next_p, TIF_DEBUG)) { set_debugreg(next->debugreg[0], 0); set_debugreg(next->debugreg[1], 1); |