lkml.org 
[lkml]   [2020]   [Apr]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v29 00/20] Intel SGX foundations
On Wed, Apr 29, 2020 at 05:27:48PM +0200, Jethro Beekman wrote:
> On 2020-04-21 23:52, Jarkko Sakkinen wrote:
> > Intel(R) SGX is a set of CPU instructions that can be used by applications
> > to set aside private regions of code and data. The code outside the enclave
> > is disallowed to access the memory inside the enclave by the CPU access
> > control.
> >
> > There is a new hardware unit in the processor called Memory Encryption
> > Engine (MEE) starting from the Skylake microacrhitecture. BIOS can define
> > one or many MEE regions that can hold enclave data by configuring them with
> > PRMRR registers.
> >
> > The MEE automatically encrypts the data leaving the processor package to
> > the MEE regions. The data is encrypted using a random key whose life-time
> > is exactly one power cycle.
> >
> > The current implementation requires that the firmware sets
> > IA32_SGXLEPUBKEYHASH* MSRs as writable so that ultimately the kernel can
> > decide what enclaves it wants run. The implementation does not create
> > any bottlenecks to support read-only MSRs later on.
> >
> > You can tell if your CPU supports SGX by looking into /proc/cpuinfo:
> >
> > cat /proc/cpuinfo | grep sgx
>
> Let's merge this.

So can I tag reviewed-by's?

/Jarkko

\
 
 \ /
  Last update: 2020-04-30 05:48    [W:0.478 / U:1.124 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site