RFR: 8371777: Clean up preferred address of G1's archive region

[Stefan Karlsson]

On Tue, 20 Jan 2026 12:49:05 GMT, Paul Hübner <phubner at openjdk.org> wrote:

> Hi all,
> 
> There exists infrastructure in G1 to map the archived region at a certain address, `preferred_addr`. This was however never implemented and abandoned in favour of JEP 516. This is a small cleanup that removes the unused parameter.
> 
> Note: the `requested_start` address is still necessary to compute pointer deltas and to perform patching if necessary. If folks feel like `requested` is a misleading name I'm happy to address that as part of a separate RFE.
> 
> Testing: tiers 1-5 Linux (x64, AArch64), macOS (x64, AArch64), Windows x64.

Looks good to me. Fixing the nomenclature in a follow-up RFE sounds good to me too.

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Marked as reviewed by stefank (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/29317#pullrequestreview-3682305984