On Tue, 4 Dec 2018, Greg Kroah-Hartman wrote:
> --- a/arch/x86/kernel/process_32.c
> +++ b/arch/x86/kernel/process_32.c
> @@ -234,7 +234,6 @@ __switch_to(struct task_struct *prev_p,
> struct fpu *prev_fpu = &prev->fpu;
> struct fpu *next_fpu = &next->fpu;
> int cpu = smp_processor_id();
> - struct tss_struct *tss = &per_cpu(cpu_tss_rw, cpu);
>
> /* never put a printk in __switch_to... printk() calls wake_up*() indirectly */
>
> @@ -266,12 +265,7 @@ __switch_to(struct task_struct *prev_p,
> if (get_kernel_rpl() && unlikely(prev->iopl != next->iopl))
> set_iopl_mask(next->iopl);
>
> - /*
> - * Now maybe handle debug registers and/or IO bitmaps
> - */
> - if (unlikely(task_thread_info(prev_p)->flags & _TIF_WORK_CTXSW_PREV ||
> - task_thread_info(next_p)->flags & _TIF_WORK_CTXSW_NEXT))
> - __switch_to_xtra(prev_p, next_p, tss);
> + switch_to_extra(prev_p, next_p);
This is missing the hunk below.
Thanks,
tglx
8<------------------
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 67cecc9a2b6f..c2df91eab573 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -59,6 +59,8 @@
#include <asm/intel_rdt_sched.h>
#include <asm/proto.h>
+#include "process.h"
+
void __show_regs(struct pt_regs *regs, int all)
{
unsigned long cr0 = 0L, cr2 = 0L, cr3 = 0L, cr4 = 0L;
