[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: cache invalidation in modload
On Thu, Jan 01, 2009 at 08:35:41PM +0200, Antti Kantee wrote:
> Why is cache invalidation, i.e. kobj_machdep(), required after loading
> a module? The module loading code doesn't appear to do anything
> magically mystically mythical which would require a flush. The only
> reason I could even begin to imagine was to flush the instruction cache.
> But at least on x86 this is not required according to my interpretation
> of the Intel manuals.
The intent is probably to flush the data cache - so that when code is
read the newly loaded data is found.
I-cache loads probably don't snoop the D-cache.
David Laight: david%l8s.co.uk@localhost
Main Index |
Thread Index |