Re: [PATCH v2 0/2] MTE support for KVM guest
From: Richard Henderson <richard.henderson@linaro.org>
Date: 2020-09-10 19:41:31
Also in:
kvmarm, lkml, qemu-devel
On 9/10/20 3:24 AM, Steven Price wrote:
It is a shame, however I suspect this is because to use those instructions you need to know the block size held in GMID_EL1. And at least in theory that could vary between CPUs.
Which is no different from having to read DCZID_EL0 in order to implement memset, in my opinion. But, whatever.
When we have some real hardware it would be worth profiling this. At the moment I've no idea whether the kernel entry overhead would make such an interface useful from a performance perspective or not.
Yep. r~ _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel