On Thu, Feb 07, 2013 at 03:29:50PM +0100, Alexander Graf wrote: > > On 04.02.2013, at 01:41, Paul Mackerras wrote: > > > On Wed, Jan 16, 2013 at 01:54:41PM +0530, Bharat Bhushan wrote: > >> This patch adds the one_reg interface to get the special instruction > >> to be used for setting software breakpoint from userspace. > > > > Since this presumably is constant for any given platform, wouldn't > > a capability be more appropriate? > > How so? A capability only tells you "I can do debug". Or "I can do debug on e500". I don't want to reteach QEMU how to do debug for every core we implement. Capabilities aren't just binary - the get-capability (check_extension) ioctl returns a 32-bit value, and we already have some that return values other than 0 or 1. So I was thinking that we could add a capability which when queried returns the special instruction. It's up to you whether you want to do it that way or not. Paul. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
