lkml.org 
[lkml]   [2018]   [Sep]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v5 5/5] x86/kvm: Avoid dynamic allocation of pvclock data when SEV is active
From
Date


On 09/06/2018 01:33 PM, Borislav Petkov wrote:
> On Thu, Sep 06, 2018 at 08:54:52AM -0700, Sean Christopherson wrote:
>> My thought was that we could simply define a second array for the SEV
>> case to statically allocate for NR_CPUS since __decrypted has a big
>> chunk of memory that would be ununsed anyways[1]. And since the second
>> array is only used for SEV it can be freed if !SEV.
>
> Lemme see if I get it straight:
>
> __decrypted:
>
> 4K
>
> __decrypted_XXX:
>
> ((num_possible_cpus() * 32) / 4K) pages
>
> __decrypted_end:
>
> Am I close?


Yes.

\
 
 \ /
  Last update: 2018-09-06 20:44    [W:2.350 / U:0.200 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site