RFR: 8272773: Configurable card table card size [v8]

[Thomas Schatzl]

On Thu, 18 Nov 2021 09:55:07 GMT, Vishal Chand <duke at openjdk.java.net> wrote:

>> Hi,
>> 
>> Please review the changes to make CardTable entry size configurable. The changes primarily consists of:
>> 
>> 1. Addition of a cmdline flag **GCCardSizeInBytes** to make the card size startup time configurable.
>> 2. Setting the card size based on the flag in G1, Parallel and Serial GC memory initialization paths.
>> 3. Setting BlockOffsetTable size and ObjectStartArray size based on the card size.
>
> Vishal Chand has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Change to avoid compilation issue in hs builds

Testing tier1-5 in our CI looks good.

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PR: https://git.openjdk.java.net/jdk/pull/5838