[PATCH RESEND v3 0/3] i386: Fix Hyper-V Gen1 guests stuck on boot with 'hv-passthrough'
Changes since 'RESEND v2': - Included 'docs/system: Add recommendations to Hyper-V enlightenments doc' in the set as it also requires a "RESEND") 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(-) -- 2.43.2
Re: [PATCH RESEND v3 0/3] i386: Fix Hyper-V Gen1 guests stuck on boot with 'hv-passthrough'
Vitaly Kuznetsov writes: > Changes since 'RESEND v2': > - Included 'docs/system: Add recommendations to Hyper-V enlightenments doc' > in the set as it also requires a "RESEND") Ping) > > 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