Re: [PATCH v8 20/38] arm64/gcs: Ensure that new threads have a GCS

On Mon, Feb 19, 2024 at 11:02:22PM -0300, Thiago Jung Bauermann wrote:

Mark Brown broonie@kernel.org writes:

...

• gcspr_el0 = addr + size - (2 * sizeof(u64));
  

• if (!gcs_consume_token(tsk, gcspr_el0)) {
  

Should this code validate the end of stack marker? Or doesn't it matter whether the marker is correct or not?

I don't think we specifically care, we're just looking for a token here.