lkml.org 
[lkml]   [2021]   [Jul]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH Part2 RFC v4 25/40] KVM: SVM: Reclaim the guest pages when SEV-SNP VM terminates
On Mon, Jul 19, 2021, Brijesh Singh wrote:
>
> On 7/19/21 12:18 PM, Sean Christopherson wrote:
> > >
> > > Okay, I will add helper to make things easier. One case where we will
> > > need to directly call the rmpupdate() is during the LAUNCH_UPDATE
> > > command. In that case the page is private and its immutable bit is also
> > > set. This is because the firmware makes change to the page, and we are
> > > required to set the immutable bit before the call.
> >
> > Or do "int rmp_make_firmware(u64 pfn, bool immutable)"?
>
> That's not what we need.
>
> We need 'rmp_make_private() + immutable' all in one RMPUPDATE. Here is the
> snippet from SNP_LAUNCH_UPDATE.

Ah, not firmwrare, gotcha. But we can still use a helper, e.g. an inner
double-underscore helper, __rmp_make_private().

\
 
 \ /
  Last update: 2021-07-19 21:44    [W:0.211 / U:1.212 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site