RFR: 8307058: Implementation of Generational ZGC [v6]

[Stefan Karlsson]

On Tue, 9 May 2023 00:50:56 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> That's unfortunate. Could you try this patch, which probes the address range to see if it can reserve the memory somewhere else within `[ZAddressHeapBase, ZAddressHeapBase+ZAddressOffsetMax)`:
>> https://github.com/stefank/jdk/tree/zgc_generational_review_test_zforwarding
>
>> That's unfortunate. Could you try this patch, which probes the address range to see if it can reserve the memory somewhere else within `[ZAddressHeapBase, ZAddressHeapBase+ZAddressOffsetMax)`: https://github.com/stefank/jdk/tree/zgc_generational_review_test_zforwarding
> 
> @stefank : Good news is that this gtest case can now pass on linux-riscv64 with this patch. I tried several times and it seems we could always reserve a space of ZGranuleSize(0x200000) bytes at address 0x852000000. Thanks for fixing this!

Thanks for helping out with this. I've now pushed the proposed patch.

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PR Review Comment: https://git.openjdk.org/jdk/pull/13771#discussion_r1188168418