[jdk19u] RFR: 8295264: Fix PaX check on RISC-V

[Vladimir Kempik]

On Wed, 23 Nov 2022 20:49:58 GMT, Ludovic Henry <luhenry at openjdk.org> wrote:

> On Linux RISC-V, PROT_WRITE doesn't imply PROT_READ [1]
> 
> The fix is to pass PROT_READ|PROT_WRITE. That matches all other calls to mmap in hotspot.
> 
> [1] https://lkml.org/lkml/2022/9/8/1066

Small context code difference made skara think it's not clean. Lets try to make it into 19u until 28 Nov.

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Marked as reviewed by vkempik (Reviewer).

PR: https://git.openjdk.org/jdk19u/pull/91