[lkml]   [2017]   [Nov]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v5 11/11] intel_sgx: driver documentation
On Tue, Nov 14, 2017 at 10:49:48PM +0200, Jarkko Sakkinen wrote:
> In these cases IA32_FEATURE_CONTROL[17] would be zeroed before locking
> the feature control, which would mean that the kernel could not write
> new values with wrmsr for the root key hash.

> The question is whether we want to allow this or not. If the answer is
> no, a check can be added to the driver initialization code whether 17 is
> set, and if not, it driver would fail to initialize.

That has my vote; I would not trust a firmware/BIOS key.

 \ /
  Last update: 2017-11-15 12:55    [W:0.088 / U:2.480 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site