[m5-dev] IsReadBarrier instruction flag
I notice that we have static inst flags called IsMemBarrier and IsWriteBarrier, but no IsReadBarrier or equivalent. Should we? I need something like that to implement the lfence instruction. Gabe ___ m5-dev mailing list m5-dev@m5sim.org http://m5sim.org/mailman/listinfo/m5-dev
Re: [m5-dev] IsReadBarrier instruction flag
We don't have it because we haven't implemented an ISA that supports it, so I see no reason not to add it. (It's pretty odd to put a fence in for reads and not want writes to be fenced too.) Nate On Fri, Feb 6, 2009 at 9:06 PM, Gabe Black gbl...@eecs.umich.edu wrote: I notice that we have static inst flags called IsMemBarrier and IsWriteBarrier, but no IsReadBarrier or equivalent. Should we? I need something like that to implement the lfence instruction. Gabe ___ m5-dev mailing list m5-dev@m5sim.org http://m5sim.org/mailman/listinfo/m5-dev ___ m5-dev mailing list m5-dev@m5sim.org http://m5sim.org/mailman/listinfo/m5-dev
Re: [m5-dev] IsReadBarrier instruction flag
Yeah, well, x86 cornered the market on odd. Gabe nathan binkert wrote: We don't have it because we haven't implemented an ISA that supports it, so I see no reason not to add it. (It's pretty odd to put a fence in for reads and not want writes to be fenced too.) Nate On Fri, Feb 6, 2009 at 9:06 PM, Gabe Black gbl...@eecs.umich.edu wrote: I notice that we have static inst flags called IsMemBarrier and IsWriteBarrier, but no IsReadBarrier or equivalent. Should we? I need something like that to implement the lfence instruction. Gabe ___ m5-dev mailing list m5-dev@m5sim.org http://m5sim.org/mailman/listinfo/m5-dev ___ m5-dev mailing list m5-dev@m5sim.org http://m5sim.org/mailman/listinfo/m5-dev ___ m5-dev mailing list m5-dev@m5sim.org http://m5sim.org/mailman/listinfo/m5-dev
