Re: [edk2-devel] [PATCH v2 0/5] OvmfPkg: Add support for 5-level paging

["Gerd Hoffmann" <kraxel@redhat.com>]

On Fri, Feb 02, 2024 at 08:30:23AM +0000, Xu, Min M wrote:
> > Pushed branch with two experimental patches:
> >   https://github.com/kraxel/edk2/commits/devel/paging-5lvl/
> > 
> > One for tdx, writing different values into TDX_WORK_AREA_PGTBL_READY for
> > 4-level and 5-level paging modes.
> > 
> > One for sev, which adds a 2-level page directory for the first gigabyte and
> > places it at the same physical address it has in 4-level paging.
> > With that SevClearPageEncMaskForGhcbPage should work unmodified in 5-
> > level mode.
> > 
> > Test results are welcome.
> 
> Thanks Gerd, it works in TDX. One typo in the patch that pageTableEntriesLoopla57  and pageTableEntriesLoopLa57.

Thanks for testing.

Added a second sev patch to the branch, rearranging the #vc
handler uninstall to make the la57 cpuid checks work on sev.

@Tom: Would be great if you can give this a test

thanks & take care,
  Gerd

PS: I'll be offline next week.



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