2015-07-07 19:54:52

by Boris Ostrovsky

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Subject: 3.18.17 Xen regression

Commit 63753fac67e1 ("x86: Store a per-cpu shadow copy of CR4") in
3.18.y branch introduced a regression on PVH Xen guests.

Please apply 5054daa285be ("x86/xen: Initialize cr4 shadow for 64-bit
PV(H) guests") from mainline to fix this. 3.18.y appears to be the only
affected branch.


Thanks.
-boris


2015-07-17 14:00:01

by Ian Campbell

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Subject: Re: 3.18.17 Xen regression

On Tue, 2015-07-07 at 15:54 -0400, Boris Ostrovsky wrote:
> Commit 63753fac67e1 ("x86: Store a per-cpu shadow copy of CR4") in
> 3.18.y branch introduced a regression on PVH Xen guests.
>
> Please apply 5054daa285be ("x86/xen: Initialize cr4 shadow for 64-bit
> PV(H) guests") from mainline to fix this. 3.18.y appears to be the only
> affected branch.

Any news on this? Our automated tests of 3.18 are continuing to fail.

Ian.

2015-07-17 14:10:00

by Boris Ostrovsky

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Subject: Re: 3.18.17 Xen regression

On 07/17/2015 09:59 AM, Ian Campbell wrote:
> On Tue, 2015-07-07 at 15:54 -0400, Boris Ostrovsky wrote:
>> Commit 63753fac67e1 ("x86: Store a per-cpu shadow copy of CR4") in
>> 3.18.y branch introduced a regression on PVH Xen guests.
>>
>> Please apply 5054daa285be ("x86/xen: Initialize cr4 shadow for 64-bit
>> PV(H) guests") from mainline to fix this. 3.18.y appears to be the only
>> affected branch.
> Any news on this? Our automated tests of 3.18 are continuing to fail.

+Sasha who I believe is 3.18.y maintainer. I probably should have coped
him on the original message.

-boris

2015-07-17 21:24:04

by Sasha Levin

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Subject: Re: 3.18.17 Xen regression

On 07/17/2015 10:09 AM, Boris Ostrovsky wrote:
> On 07/17/2015 09:59 AM, Ian Campbell wrote:
>> On Tue, 2015-07-07 at 15:54 -0400, Boris Ostrovsky wrote:
>>> Commit 63753fac67e1 ("x86: Store a per-cpu shadow copy of CR4") in
>>> 3.18.y branch introduced a regression on PVH Xen guests.
>>>
>>> Please apply 5054daa285be ("x86/xen: Initialize cr4 shadow for 64-bit
>>> PV(H) guests") from mainline to fix this. 3.18.y appears to be the only
>>> affected branch.
>> Any news on this? Our automated tests of 3.18 are continuing to fail.
>
> +Sasha who I believe is 3.18.y maintainer. I probably should have coped him on the original message.

Added, thanks!


Thanks,
Sasha