[jdk21] Integrated: 8310656: RISC-V: __builtin___clear_cache can fail silently.

[Robbin Ehn]

On Sun, 2 Jul 2023 18:35:30 GMT, Robbin Ehn <rehn at openjdk.org> wrote:

> Hi all,
> 
> This pull request contains a backport of commit [faf1b822](https://github.com/openjdk/jdk/commit/faf1b822d03b726413d77a2b247dfbbf4db7d57e) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Robbin Ehn on 2 Jul 2023 and was reviewed by Ludovic Henry, Thomas Stuefe and Fei Yang.
> 
> Thanks!

This pull request has now been integrated.

Changeset: 5f1d7627
Author:    Robbin Ehn <rehn at openjdk.org>
URL:       https://git.openjdk.org/jdk21/commit/5f1d762750a0d4c20da5b23d54f922dbb5cbbe34
Stats:     131 lines in 3 files changed: 126 ins; 1 del; 4 mod

8310656: RISC-V: __builtin___clear_cache can fail silently.

Reviewed-by: luhenry, fyang
Backport-of: faf1b822d03b726413d77a2b247dfbbf4db7d57e

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PR: https://git.openjdk.org/jdk21/pull/90