[PATCH 3/3] powerpc: Avoid load hit store when using find_linux_pte_or_hugepte()

Michael Ellerman mpe at ellerman.id.au
Tue May 31 09:29:52 AEST 2016


On Sun, 2016-05-29 at 22:03 +1000, Anton Blanchard wrote:

> From: Anton Blanchard <anton at samba.org>
> 
> In many cases we disable interrupts right before calling
> find_linux_pte_or_hugepte().
> 
> find_linux_pte_or_hugepte() first checks interrupts are disabled
> before calling __find_linux_pte_or_hugepte():
> 
>         if (!arch_irqs_disabled()) {
>                 pr_info("%s called with irq enabled\n", __func__);
>                 dump_stack();
>         }

Should that be a VM_WARN_ON()?

cheers



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