RFR (S) 8055069: TSX and RTM should be deprecated more strongly until hardware is corrected
vladimir.kozlov at oracle.com
Thu Aug 21 23:07:19 UTC 2014
Thanks you, Igor
On 8/21/14 3:59 PM, Igor Veresov wrote:
> Looks good.
> On Aug 21, 2014, at 3:09 PM, Vladimir Kozlov <vladimir.kozlov at oracle.com> wrote:
>> "Errata HSW136. Software Using Intel® TSX May Result in Unpredictable System Behavior."
>> Require to specify UnlockExperimentalVMOptions flag together with UseRTMLocking flag on un-patched systems where CPUID allows it but is unsupported otherwise. This would be for experiments and research and not for production applications as the name suggests.
>> Give a warning on un-patched system when RTM is used.
>> I have to adjust several jtreg RTM tests.
>> Note, by default UseRTMLocking is off.
>> I ran compiler jtreg tests on un-patched system and on machine without RTM.
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