lkml.org 
[lkml]   [2015]   [May]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 08/12] KVM: x86: save/load state on SMM switch
2015-05-21 18:21+0200, Paolo Bonzini:
> On 21/05/2015 18:20, Radim Krčmář wrote:
> >
> >> > + set_desc_base(&desc, get_smstate(u32, smbase, offset + 8));
> >> > + set_desc_limit(&desc, get_smstate(u32, smbase, offset + 4));
> >> > + rsm_set_desc_flags(&desc, get_smstate(u32, smbase, offset));
> > (There wan't a layout where this would be right, so we could save the
> > shifting of those flags in 64 bit mode. Intel P6 was close, and they
> > had only 2 bytes for access right, which means they weren't shifted.)
>
> Check the AMD architecture manual.

I must be blind, is there more than Table 10-2?

(And according to ADM manual, we are overwriting GDT and IDT base at
offset 0xff88 and 0xff94 with ES and CS data, so it's not the best
reference for this case ...)


\
 
 \ /
  Last update: 2015-05-21 19:01    [W:0.087 / U:0.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site