On Thu, Dec 25, 2014 at 02:02:04PM +0000, Takeshi Nakayama wrote:
> Modified Files:
> src/sys/arch/sparc64/include: psl.h
>
> Log Message:
> Put "memory" to asm inline for reading privilege registers on sun4v
> to avoid issuing rdpr %ver before checking cputyp as a result of
> code moving by compiler optimization.
>
>
> To generate a diff of this commit:
> cvs rdiff -u -r1.55 -r1.56 src/sys/arch/sparc64/include/psl.h
Is that the correct fix?
Unless the rdpr actually accesses memory (don't think it does) then
then problem is probably a missing 'volatile' instead.
Certainly the way those asm functions are defined looks to be
rather more obfuscated than necessary.
David
--
David Laight: da...@l8s.co.uk
