| Message ID | 20230612084201.294248-1-vkuznets@redhat.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | i386: Fix Hyper-V Gen1 guests stuck on boot with 'hv-passthrough' | expand |
Vitaly Kuznetsov <vkuznets@redhat.com> writes: > 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 (2): > i386: Fix conditional CONFIG_SYNDBG enablement > i386: Exclude 'hv-syndbg' from 'hv-passthrough' > > docs/system/i386/hyperv.rst | 13 +++++++++---- > target/i386/cpu.c | 2 ++ > target/i386/kvm/kvm.c | 18 ++++++++++++------ > 3 files changed, 23 insertions(+), 10 deletions(-) Ping)
Vitaly Kuznetsov <vkuznets@redhat.com> writes: > Vitaly Kuznetsov <vkuznets@redhat.com> writes: > >> 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 (2): >> i386: Fix conditional CONFIG_SYNDBG enablement >> i386: Exclude 'hv-syndbg' from 'hv-passthrough' >> >> docs/system/i386/hyperv.rst | 13 +++++++++---- >> target/i386/cpu.c | 2 ++ >> target/i386/kvm/kvm.c | 18 ++++++++++++------ >> 3 files changed, 23 insertions(+), 10 deletions(-) Monthly ping)
Vitaly Kuznetsov <vkuznets@redhat.com> writes: > Vitaly Kuznetsov <vkuznets@redhat.com> writes: > >> Vitaly Kuznetsov <vkuznets@redhat.com> writes: >> >>> 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 (2): >>> i386: Fix conditional CONFIG_SYNDBG enablement >>> i386: Exclude 'hv-syndbg' from 'hv-passthrough' >>> >>> docs/system/i386/hyperv.rst | 13 +++++++++---- >>> target/i386/cpu.c | 2 ++ >>> target/i386/kvm/kvm.c | 18 ++++++++++++------ >>> 3 files changed, 23 insertions(+), 10 deletions(-) > > Monthly ping) Turns out these patches were never merged and honestly I forgot about them myself. Will resend shortly.