On 04/01/2014 02:35 PM, H. Peter Anvin wrote: > On 04/01/2014 02:21 PM, Johannes Weiner wrote: >> Either way, optimistic volatile pointers are nowhere near as >> transparent to the application as the above description suggests, >> which makes this usecase not very interesting, IMO. > > ... however, I think you're still derating the value way too much. The > case of user space doing elastic memory management is more and more > common, and for a lot of those applications it is perfectly reasonable > to either not do system calls or to have to devolatilize first.
The SIGBUS is only in cases where the memory is set as volatile and _then_ accessed, right? John, this was something that the Mozilla guys asked for, right? Any idea why this isn't ever a problem for them? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
