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Re: [PATCH 0/4] target/ppc: Use probe_access

From: Aleksandar Markovic
Subject: Re: [PATCH 0/4] target/ppc: Use probe_access
Date: Thu, 30 Jan 2020 17:42:26 +0100

On Thu, Jan 30, 2020 at 5:09 PM Richard Henderson
<address@hidden> wrote:
> On 1/29/20 5:35 PM, Aleksandar Markovic wrote:

> > My additional concern, of course, is: Are other targets exposed to 
> > performance
> > degradation, and why?
> Potentially, yes.  However:
> It requires lots of loads in a loop, on a hot path.  I would not have guessed
> that the ppc32 Load Multiple Word (et al) was on a hot path at all, since the
> instructions are deprecated.  But that's what an ancient os gets you, I 
> suppose.


> r~

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