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Re: [Qemu-devel] [PATCH 0/3] WHPX introduce changes for Windows Insider

From: Stefan Weil
Subject: Re: [Qemu-devel] [PATCH 0/3] WHPX introduce changes for Windows Insider SDK 17110
Date: Thu, 17 Jan 2019 21:37:44 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0

Am 14.03.2018 um 15:52 schrieb Justin Terry (VM) via Qemu-devel:
> This change set fixes two breaking changes that were introduced in the
> Windows Insider SDK 17110. First, a change to the WHvGetCapability function
> decl to include the 'out' WrittenSizeInBytes. Second, changes to the
> WHvSetPartitionProperty function decl and WHV_PARTITION_PROPERTY structure
> to directly pass the PropertyCode at invocation.
> Lastly, it introduces a major performance improvement in whpx_vcpu_post_run
> using the VpContext exit structure rather than another round trip call to
> WHvGetVirtualProcessorRegisters to synchronize vp state.
> QEMU compiled against this SDK (17110+) is expected to work on all Windows
> Insider Builds (17115+).
> Thanks,
> Justin Terry

Hi Justin,

as far as I know it still not possible to cross build a legal QEMU for
Windows on a Linux machine due to the license limitations of the SDK
which is needed. The header files needed for the QEMU build are "All
rights reserved".

People often ask me to add WHPX support to the QEMU installer for
Windows, but I have to tell them that I cannot do that currently.

This problem could be solved if the necessary header files were added to
QEMU with a permissive license by someone who has the rights to do so.

Could you add WinHvEmulation.h and WinHvPlatform.h or am I allowed to
make such files from the documentation at https://docs.microsoft.com/?

Stefan Weil

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