RFR: Check BS type in immByteMapBase predicate

[Andrew Haley]

On 05/12/17 12:19, Aleksey Shipilev wrote:
> On 12/05/2017 01:11 PM, Roman Kennke wrote:
>> Am 05.12.2017 um 11:55 schrieb Aleksey Shipilev:
>>> On 12/05/2017 11:50 AM, Roman Kennke wrote:
>>>  What would happen if code uses that operand, but new predicate mismatches it (e.g. in Shenandoah)?
>> It cannot be used in Shenandoah because we don't  use the CardTableModRefBS. Checking for the BS
>> type seems the safest way to prevent the bug.
> 
> Oh, okay.
> 
>>>> I intend to push backports of this to 9 and 8 too. Do I need extra reviews for those?
>>> Since this is not 9- or 8u-specific, I think you just push to sh/jdk10, and then regular backports
>>> process handles the propagation to sh/jdk9 and sh/jdk10.
>>
>> Ok.
> 
> This is okay to go to sh/jdk10. Can you give aarch64 maintainers a heads-up about this fix? It
> probably warrants the fix in upstream for other collector's benefit, like Epsilon.

It looks OK.  If we have a bug report we can push it to all live
repos.

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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