Re: [PATCH v5 0/5] mm: introduce memfd_secret system call to create "secret" memory areas
From: Dave Hansen <hidden>
Date: 2020-09-16 19:08:53
Also in:
linux-mm, linux-riscv, nvdimm
On 9/16/20 11:49 AM, Andy Lutomirski wrote:
I still have serious concerns with uncached mappings. I'm not saying I can't be convinced, but I'm not currently convinced that we should allow user code to create UC mappings on x86.
There's another widely-used OS that has a "NOCACHE" flag to be specified to on what I *think* is the equivalent of anonymous memory mappings (VirtualAlloc()):
https://docs.microsoft.com/en-us/windows/win32/memory/memory-protection-constants
I'll offer this not as a reason we should or shouldn't allow it. But, we should at least be able to figure out if it's caused problems for them or not. I think it's been around a long time. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel