Vitaly Kuznetsov writes:
> Vitaly Kuznetsov writes:
>
>> KVM commit c68dc1b577ea ("KVM: x86: Report host tsc and realtime values in
>> KVM_GET_CLOCK") broke migration of certain workloads, e.g. Win11 + WSL2
>> guest reboots immediately after migration. KVM, how
Paolo Bonzini writes:
> Hi, a similar patch is now in.
>
Indeed,
commit c4ef867f2949bf2a2ae18a4e27cf1a34bbc8aecb
Author: Ray Zhang
Date: Thu Sep 22 18:05:23 2022 +0800
target/i386/kvm: fix kvmclock_current_nsec: Assertion `time.tsc_timestamp
<= migration_tsc' failed
solves the
by avoiding vmx_is_valid_cr4() check from __set_sregs2() and hoping that
someone will check for the resulting inconsistency later. I don't quite
like this option so I didn't explore it in depth.
Vitaly Kuznetsov (2):
i386: reset KVM nested state upon CPU reset
i386: reorder kvm_put_sregs2
(kvm_arch_reset_vcpu() -> kvm_init_nested_state()), calling
kvm_put_nested_state() before kvm_put_sregs2() is OK, this will ensure
that vCPU is *not* in VMX root opertaion.
Signed-off-by: Vitaly Kuznetsov
---
target/i386/kvm/kvm.c | 20 ++--
1 file changed, 18 insertions(+)
Make sure env->nested_state is cleaned up when a vCPU is reset, it may
be stale after an incoming migration, kvm_arch_put_registers() may
end up failing or putting vCPU in a weird state.
Signed-off-by: Vitaly Kuznetsov
---
target/i386/kvm/kvm.c | 37 +++--
1 f
Maxim Levitsky writes:
> On Wed, 2022-08-10 at 16:00 +0200, Vitaly Kuznetsov wrote:
>> Setting nested state upon migration needs to happen after kvm_put_sregs2()
>> to e.g. have EFER.SVME set. This, however, doesn't work for vCPU reset:
>> when vCPU is in VMX root opera
M_GET_SUPPORTED_HV_CPUID
>> ioctl) for HyperV
>> features.
>> Apologies in advance if i misunderstood something.
>>
Thanks for Ccing me.
Hyper-V features should appear in QMP since
commit 071ce4b03becf9e2df6b758fde9609be8ddf56f1
Author: Vitaly Kuznetsov
Date
' 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
res in 'hv-passthrough'
mode. Note, "-cpu host,hv-passthrough,hv-syndbg" can still be used if
needed.
As both 'hv-passthrough' and 'hv-syndbg' are debug features, the change
should not have any effect on production environments.
Signed-off-by: Vitaly Kuznetsov
---
docs/system/
ported() making sure there
are no 'holes' or improperly defined features in 'kvm_hyperv_properties'.
Fixes: d8701185f40c ("hw: hyperv: Initial commit for Synthetic Debugging
device")
Signed-off-by: Vitaly Kuznetsov
---
target/i386/cpu.c | 2 ++
target/i386/kvm/kvm.c | 11 +
Vitaly Kuznetsov writes:
> Vitaly Kuznetsov 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 fou
Vitaly Kuznetsov 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 iss
ukata wrote:
>>
>> Hi all, appreciate any comments or feedbacks on the patch.
>>
>> Thanks,
>> Eiichi
>>
>>> On Nov 1, 2023, at 23:04, Vitaly Kuznetsov wrote:
>>>
>>> Eiichi Tsukata writes:
>>>
>>>> F
While hyperv.rst already has all currently implemented Hyper-V
enlightenments documented, it may be unclear what is the recommended set to
achieve the best result. Add the corresponding section to the doc.
Signed-off-by: Vitaly Kuznetsov
---
docs/system/i386/hyperv.rst | 30
res in 'hv-passthrough'
mode. Note, "-cpu host,hv-passthrough,hv-syndbg" can still be used if
needed.
As both 'hv-passthrough' and 'hv-syndbg' are debug features, the change
should not have any effect on production environments.
Signed-off-by: Vitaly Kuznetsov
---
docs/system/
ported() making sure there
are no 'holes' or improperly defined features in 'kvm_hyperv_properties'.
Fixes: d8701185f40c ("hw: hyperv: Initial commit for Synthetic Debugging
device")
Signed-off-by: Vitaly Kuznetsov
---
target/i386/cpu.c | 2 ++
target/i386/kvm/kvm.c | 11 +
-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
Zhao Liu writes:
> Hi Vitaly,
>
> On Tue, Mar 05, 2024 at 05:42:04PM +0100, Vitaly Kuznetsov wrote:
>> Date: Tue, 5 Mar 2024 17:42:04 +0100
>> From: Vitaly Kuznetsov
>> Subject: [PATCH RESEND v3 3/3] docs/system: Add recommendations to Hyper-V
>> enlighten
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
>
ported() making sure there
are no 'holes' or improperly defined features in 'kvm_hyperv_properties'.
Fixes: d8701185f40c ("hw: hyperv: Initial commit for Synthetic Debugging
device")
Signed-off-by: Vitaly Kuznetsov
---
target/i386/cpu.c | 2 ++
target/i386/kvm/kvm.c | 11 +
While hyperv.rst already has all currently implemented Hyper-V
enlightenments documented, it may be unclear what is the recommended set to
achieve the best result. Add the corresponding section to the doc.
Signed-off-by: Vitaly Kuznetsov
---
docs/system/i386/hyperv.rst | 30
assthrough' 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/hyper
res in 'hv-passthrough'
mode. Note, "-cpu host,hv-passthrough,hv-syndbg" can still be used if
needed.
As both 'hv-passthrough' and 'hv-syndbg' are debug features, the change
should not have any effect on production environments.
Signed-off-by: Vitaly Kuznetsov
---
docs/system/
501 - 523 of 523 matches
Mail list logo
