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Re: [PATCH 06/11] x86/shadow: drop a few uses of mfn_valid()


  • To: Andrew Cooper <Andrew.Cooper3@xxxxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Mon, 9 Jan 2023 09:42:18 +0100
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  • Cc: Wei Liu <wl@xxxxxxx>, Roger Pau Monne <roger.pau@xxxxxxxxxx>, "Tim (Xen.org)" <tim@xxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
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On 06.01.2023 02:02, Andrew Cooper wrote:
> On 05/01/2023 4:04 pm, Jan Beulich wrote:
>> v->arch.paging.shadow.shadow_table[], v->arch.paging.shadow.oos[],
>> v->arch.paging.shadow.oos_{snapshot[],fixup[].smfn[]} as well as the
> 
> fixup[],smfn[] ?

No. See e.g. shadow_vcpu_init():

    for ( i = 0; i < SHADOW_OOS_PAGES; i++ )
    {
        v->arch.paging.shadow.oos[i] = INVALID_MFN;
        v->arch.paging.shadow.oos_snapshot[i] = INVALID_MFN;
        for ( j = 0; j < SHADOW_OOS_FIXUPS; j++ )
            v->arch.paging.shadow.oos_fixup[i].smfn[j] = INVALID_MFN;
    }

Jan



 


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