Re: [PATCH RESEND v3 0/3] i386: Fix Hyper-V Gen1 guests stuck on boot with 'hv-passthrough'

[Vitaly Kuznetsov <vkuznets@redhat.com>]

Vitaly Kuznetsov <vkuznets@redhat.com> writes:

> Changes since 'RESEND v2':
> - Included 'docs/system: Add recommendations to Hyper-V enlightenments doc'
>   in the set as it also requires a "RESEND")

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>
> Hyper-V Gen1 guests are getting stuck on boot when 'hv-passthrough' is
> used. While 'hv-passthrough' is a debug only feature, this significantly
> limit its usefullness. While debugging the problem, I found that there are
> two loosely connected issues:
> - 'hv-passthrough' enables 'hv-syndbg' and this is undesired.
> - 'hv-syndbg's support by KVM is detected incorrectly when !CONFIG_SYNDBG.
>
> Fix both issues; exclude 'hv-syndbg' from 'hv-passthrough' and don't allow
> to turn on 'hv-syndbg' for !CONFIG_SYNDBG builds. 
>
> Vitaly Kuznetsov (3):
>   i386: Fix conditional CONFIG_SYNDBG enablement
>   i386: Exclude 'hv-syndbg' from 'hv-passthrough'
>   docs/system: Add recommendations to Hyper-V enlightenments doc
>
>  docs/system/i386/hyperv.rst | 43 +++++++++++++++++++++++++++++++++----
>  target/i386/cpu.c           |  2 ++
>  target/i386/kvm/kvm.c       | 18 ++++++++++------
>  3 files changed, 53 insertions(+), 10 deletions(-)

-- 
Vitaly