[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 2/2] xen: arm: update arm32 assembly primitives to Linux v3.16-rc6
On Fri, 2014-07-25 at 16:42 +0100, Julien Grall wrote: > Hi Ian, > > On 07/25/2014 04:22 PM, Ian Campbell wrote: > > bitops, cmpxchg, atomics: Import: > > c32ffce ARM: 7984/1: prefetch: add prefetchw invocations for barriered > > atomics > > Compare to Linux we don't have specific prefetch* helpers. We directly > use the compiler builtin ones. Shouldn't we import the ARM specific > helpers to gain in performance? My binaries are full of pld instructions where I think I would expect them, so it seems like the compiler builtin ones are sufficient. I suspect the Linux define is there to cope with older compilers or something. Ian. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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