| From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| Date: Mon, 1 Jul 2019 17:39:28 +0200 |
| Subject: [PATCH] x86: Disable HAVE_ARCH_JUMP_LABEL |
| MIME-Version: 1.0 |
| Content-Type: text/plain; charset=UTF-8 |
| Content-Transfer-Encoding: 8bit |
| |
| __text_poke() does: |
| | local_irq_save(flags); |
| … |
| | ptep = get_locked_pte(poking_mm, poking_addr, &ptl); |
| |
| which does not work on -RT because the PTE-lock is a spinlock_t typed lock. |
| |
| Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| --- |
| arch/x86/Kconfig | 4 ++-- |
| 1 file changed, 2 insertions(+), 2 deletions(-) |
| |
| --- a/arch/x86/Kconfig |
| +++ b/arch/x86/Kconfig |
| @@ -134,8 +134,8 @@ config X86 |
| select HAVE_ALIGNED_STRUCT_PAGE if SLUB |
| select HAVE_ARCH_AUDITSYSCALL |
| select HAVE_ARCH_HUGE_VMAP if X86_64 || X86_PAE |
| - select HAVE_ARCH_JUMP_LABEL |
| - select HAVE_ARCH_JUMP_LABEL_RELATIVE |
| + select HAVE_ARCH_JUMP_LABEL if !PREEMPT_RT |
| + select HAVE_ARCH_JUMP_LABEL_RELATIVE if !PREEMPT_RT |
| select HAVE_ARCH_KASAN if X86_64 |
| select HAVE_ARCH_KASAN_VMALLOC if X86_64 |
| select HAVE_ARCH_KGDB |
