lkml.org 
[lkml]   [2022]   [Jun]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    SubjectRe: [PATCH 1/2] x86/pat: fix x86_has_pat_wp()
    From
    On 20.06.22 17:27, Dave Hansen wrote:
    > On 6/20/22 03:41, Juergen Gross wrote:
    >>> But I'm only guessing - this needs a *lot* more elaboration and
    >>> explanation why exactly this is needed.
    >>
    >> I will correct the code and update the commit message.
    >
    > It would also be great to cover the end-user-visible impact of the bug
    > and the fix. It _looks_ like it will probably only affect an SEV
    > system's ability to read some EFI data. That will presumably be pretty
    > bad because it ends up reading from an encrypted mapping instead of a
    > decrypted one.

    Xen doesn't support SEV guests yet. So the only caveat here would be EFI
    setting up PAT by itself.

    Not sure this is really a real world issue.


    Juergen
    [unhandled content-type:application/pgp-keys][unhandled content-type:application/pgp-signature]
    \
     
     \ /
      Last update: 2022-06-20 17:35    [W:4.284 / U:0.004 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site