Patches 1 and 2 fix two cases where a guest could hang at 100% CPU
due to mis-emulation of a failing invept or invvpid.
Patch 3 works around a bug in RHEL6 KVM, which is exposed by nested
VPID support; RHEL6 KVM uses single-context invvpid unconditionally,
but until now KVM did not provide it.
Patches 1 and 2 fix two cases where a guest could hang at 100% CPU
due to mis-emulation of a failing invept or invvpid.
Patch 3 works around a bug in RHEL6 KVM, which is exposed by nested
VPID support; RHEL6 KVM uses single-context invvpid unconditionally,
but until now KVM did not provide it.
On 18/03/2016 19:04, David Matlack wrote:
> > the tests would effectively DoS the host.
>
> How does this DoS the host? The guest is stuck executing the same
> instruction over and over, but it's exiting to KVM every time,
> allowing KVM to reschedule the VCPU. I would agree it DoSes the guest.
On 18/03/2016 19:04, David Matlack wrote:
> > the tests would effectively DoS the host.
>
> How does this DoS the host? The guest is stuck executing the same
> instruction over and over, but it's exiting to KVM every time,
> allowing KVM to reschedule the VCPU. I would agree it DoSes the guest.
On 18/03/2016 18:42, David Matlack wrote:
> On Fri, Mar 18, 2016 at 9:09 AM, Paolo Bonzini wrote:
>> Patches 1 and 2 fix two cases where a guest could hang at 100% CPU
>> due to mis-emulation of a failing invept or invvpid.
>
> Will you be sending out kvm-unit-test test
On 18/03/2016 18:42, David Matlack wrote:
> On Fri, Mar 18, 2016 at 9:09 AM, Paolo Bonzini wrote:
>> Patches 1 and 2 fix two cases where a guest could hang at 100% CPU
>> due to mis-emulation of a failing invept or invvpid.
>
> Will you be sending out kvm-unit-test test cases for these?
Yes,
On Fri, Mar 18, 2016 at 9:09 AM, Paolo Bonzini wrote:
> Patches 1 and 2 fix two cases where a guest could hang at 100% CPU
> due to mis-emulation of a failing invept or invvpid.
Will you be sending out kvm-unit-test test cases for these?
>
> Patch 3 works around a bug in
On Fri, Mar 18, 2016 at 9:09 AM, Paolo Bonzini wrote:
> Patches 1 and 2 fix two cases where a guest could hang at 100% CPU
> due to mis-emulation of a failing invept or invvpid.
Will you be sending out kvm-unit-test test cases for these?
>
> Patch 3 works around a bug in RHEL6 KVM, which is
On Fri, Mar 18, 2016 at 10:58 AM, Paolo Bonzini wrote:
>
>
> On 18/03/2016 18:42, David Matlack wrote:
>> On Fri, Mar 18, 2016 at 9:09 AM, Paolo Bonzini wrote:
>>> Patches 1 and 2 fix two cases where a guest could hang at 100% CPU
>>> due to
On Fri, Mar 18, 2016 at 10:58 AM, Paolo Bonzini wrote:
>
>
> On 18/03/2016 18:42, David Matlack wrote:
>> On Fri, Mar 18, 2016 at 9:09 AM, Paolo Bonzini wrote:
>>> Patches 1 and 2 fix two cases where a guest could hang at 100% CPU
>>> due to mis-emulation of a failing invept or invvpid.
>>
>>
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