Re: [PATCH 00/15] kasan: x86: arm64: risc-v: KASAN tag-based mode for x86

[Christoph Lameter (Ampere)]

On Tue, 4 Feb 2025, Jessica Clarke wrote:

> It’s not “no performance penalty”, there is a cost to tracking the MTE
> tags for checking. In asynchronous (or asymmetric) mode that’s not too


On Ampere Processor hardware there is no penalty since the logic is build
into the usual read/write paths. This is by design. There may be on other
platforms that cannot do this.