[RFC] ARM: Make CPU_DCACHE_DISABLE depend on !SMP
Russell King - ARM Linux
linux at arm.linux.org.uk
Fri Jan 9 08:16:24 PST 2015
On Thu, Jan 08, 2015 at 02:25:57PM -0800, Florian Fainelli wrote:
> On 08/01/15 14:13, Russell King - ARM Linux wrote:
> > On Thu, Jan 08, 2015 at 11:10:47PM +0100, Arnd Bergmann wrote:
> >> My guess is that any implementation that has working LDREX/STREX
> >> on uncached memory does not support SMP, because these instructions
> >> tend to be implemented through the cache coherency logic on SMP
> >> systems but could be implemented more easily without a dcache
> >> on uniprocessor cores.
> > Yes, I negated Tony's patches... Tony was fixing pstore to use
> > writecombine memory.
> > So this change is fine.
> Do you want me to submit the patch as-is to your patch tracking, or
> would you want to include Gregory's quotes for completeness?
I think as-is.
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