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Re: [PATCH v2 3/3] xen/arm: Warn user on cpu errata 832075

  • To: Julien Grall <julien@xxxxxxx>
  • From: Bertrand Marquis <Bertrand.Marquis@xxxxxxx>
  • Date: Thu, 29 Oct 2020 09:55:15 +0000
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  • Thread-topic: [PATCH v2 3/3] xen/arm: Warn user on cpu errata 832075

Hi Julien,

> On 28 Oct 2020, at 18:39, Julien Grall <julien@xxxxxxx> wrote:
> Hi Bertrand,
> On 26/10/2020 16:21, Bertrand Marquis wrote:
>> When a Cortex A57 processor is affected by CPU errata 832075, a guest
>> not implementing the workaround for it could deadlock the system.
>> Add a warning during boot informing the user that only trusted guests
>> should be executed on the system.
>> An equivalent warning is already given to the user by KVM on cores
>> affected by this errata.
>> Also taint the hypervisor as unsecure when this errata applies and
>> mention Cortex A57 r0p0 - r1p2 as not security supported in SUPPORT.md
>> Signed-off-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
> Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx>


> If you don't need to resend the series, then I would be happy to fix the typo 
> pointed out by George on commit.

There is only the condensing from Stefano.
If you can handle that on commit to great but if you need me to send a v3 to 
make your life easier do not hesitate to tell me


> Cheers,
> -- 
> Julien Grall



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