Re: [PATCH v19 00/15] arm64: untag user pointers passed to the kernel
From: Andrey Konovalov <hidden>
Date: 2019-08-01 12:48:51
Also in:
amd-gfx, dri-devel, kvm, linux-kselftest, linux-media, linux-mm, linux-rdma, lkml
On Thu, Aug 1, 2019 at 2:11 PM Kevin Brodsky [off-list ref] wrote:
On 31/07/2019 17:50, Dave Hansen wrote:quoted
On 7/23/19 10:58 AM, Andrey Konovalov wrote:quoted
The mmap and mremap (only new_addr) syscalls do not currently accept tagged addresses. Architectures may interpret the tag as a background colour for the corresponding vma.What the heck is a "background colour"? :)Good point, this is some jargon that we started using for MTE, the idea being that the kernel could set a tag value (specified during mmap()) as "background colour" for anonymous pages allocated in that range. Anyway, this patch series is not about MTE. Andrey, for v20 (if any), I think it's best to drop this last sentence to avoid any confusion.
Sure, thanks!
Kevin
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