Integrated: 8378107: Data cache zeroing is used even when it is prohibited

[Andrew Haley]

On Tue, 17 Feb 2026 16:24:48 GMT, Andrew Haley <aph at openjdk.org> wrote:

> The DC ZVA instruction should not be used when DZP, bit [4] in DCZID_EL0, is set.
> 
> It turns out that detection of DZP, bit [4] in DCZID_EL0, never worked. And this was never a problem until now, because everyone supports DC ZVA instructions.

This pull request has now been integrated.

Changeset: 4a089961
Author:    Andrew Haley <aph at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/4a08996147222d0d8f77655798ac4c3bb5471633
Stats:     4 lines in 2 files changed: 2 ins; 0 del; 2 mod

8378107: Data cache zeroing is used even when it is prohibited

Reviewed-by: shade, adinn

-------------

PR: https://git.openjdk.org/jdk/pull/29762