Re: [Xen-devel] [PATCH v5 03/23] x86/mm: move update_intpte to pv/mm.h

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 14.09.17 at 14:58, <wei.liu2@xxxxxxxxxx> wrote:
> --- a/xen/arch/x86/pv/mm.h
> +++ b/xen/arch/x86/pv/mm.h
> @@ -18,4 +18,69 @@ static inline l1_pgentry_t guest_get_eff_l1e(unsigned long 
> linear)
>      return l1e;
>  }
>  
> +/*
> + * PTE updates can be done with ordinary writes except:
> + *  1. Debug builds get extra checking by using CMPXCHG[8B].
> + */
> +#if !defined(NDEBUG)

#ifdef

> +#define PTE_UPDATE_WITH_CMPXCHG

#else
#undef

now that it sits in a header, to be on the safe side.

With that

Acked-by: Jan Beulich <jbeulich@xxxxxxxx>

Jan


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