[jdk17u-dev] Integrated: 8309258: RISC-V: Add riscv_hwprobe syscall

[Robbin Ehn]

On Thu, 2 Nov 2023 13:55:06 GMT, Robbin Ehn <rehn at openjdk.org> wrote:

> Hi, please consider.
> 
> 
> RISC-V has many extensions and it's not feasible to set them correctly on the command line for users.
> There is no instruction to get the cpu, such as cpuid on x86.
> 
> 
> Still running tests, it will take a while.

This pull request has now been integrated.

Changeset: b5065594
Author:    Robbin Ehn <rehn at openjdk.org>
URL:       https://git.openjdk.org/jdk17u-dev/commit/b50655948063df828be9cec993a687578e0d204d
Stats:     591 lines in 5 files changed: 483 ins; 56 del; 52 mod

8309258: RISC-V: Add riscv_hwprobe syscall
8315206: RISC-V: hwprobe query is_set return wrong value
8316859: RISC-V: Disable detection of V through HWCAP

Reviewed-by: fyang
Backport-of: 31b6fd775f1c4f2841d9a52ad5f275ad446ee661

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PR: https://git.openjdk.org/jdk17u-dev/pull/1942