Re: [Xen-devel] [edk2-devel] [PATCH v4 06/35] OvmfPkg/XenResetVector: Add new entry point for Xen PVH

[Laszlo Ersek <lersek@xxxxxxxxxx>]

On 07/29/19 17:39, Anthony PERARD wrote:
> Add a new entry point for Xen PVH that enter directly in 32bits.
> 
> Information on the expected state of the machine when this entry point
> is used can be found at:
> https://xenbits.xenproject.org/docs/unstable/misc/pvh.html
> 
> Also, compare to the original file [1], the two `nop' of the "resetVector"
> entry point are removed. There were introduced by 8332983e2e33
> ("UefiCpuPkg: Replace the un-necessary WBINVD instruction at the reset
> vector with two NOPs in VTF0.", 2011-08-04), but don't seems to be
> useful. This is the entry point used by HVM guest (hvmloader).
> 
> [1] UefiCpuPkg/ResetVector/Vtf0/Ia16/ResetVectorVtf0.asm
> 
> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1689
> Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
> Acked-by: Laszlo Ersek <lersek@xxxxxxxxxx>
> ---
> 
> Notes:
>     v4:
>     - remove the two nop in the HVM entry point

Also, new paragraph in the commit message.

Acked-by: Laszlo Ersek <lersek@xxxxxxxxxx>

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