From: Andrew Jones <drjones@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
christoffer dall <christoffer.dall@linaro.org>,
marc zyngier <marc.zyngier@arm.com>
Subject: Re: [PATCH kvm-unit-tests] arm: fix crash when caches are off
Date: Tue, 16 Sep 2014 08:51:06 -0400 (EDT) [thread overview]
Message-ID: <205961557.5030289.1410871866191.JavaMail.zimbra@redhat.com> (raw)
In-Reply-To: <5418315B.6020201@redhat.com>
----- Original Message -----
> Il 16/09/2014 14:43, Andrew Jones ha scritto:
> > I don't think we need to worry about this case. AFAIU, enabling the
> > caches for a particular cpu shouldn't require any synchronization.
> > So we should be able to do
> >
> > enable caches
> > spin_lock
> > start other processors
> > spin_unlock
>
> Ok, I'll test and apply your patch then.
Actually, yeah, please apply now in order to get A7 boards working.
I'll do a follow-on patch to fix the case above (which will require
deciding how to hand per cpu data).
drew
>
> Once you change the code to enable caches, please consider hanging on
> spin_lock with caches disabled.
>
> Paolo
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>
next prev parent reply other threads:[~2014-09-16 12:51 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-16 2:06 [PATCH kvm-unit-tests] arm: fix crash when caches are off Andrew Jones
2014-09-16 8:14 ` Paolo Bonzini
2014-09-16 12:12 ` Andrew Jones
2014-09-16 12:28 ` Paolo Bonzini
2014-09-16 12:43 ` Andrew Jones
2014-09-16 12:47 ` Paolo Bonzini
2014-09-16 12:51 ` Andrew Jones [this message]
2014-09-16 14:38 ` Andrew Jones
2014-09-16 18:04 ` Andrew Jones
2014-09-16 12:57 ` Andrew Jones
2014-09-26 7:51 ` Christoffer Dall
2014-10-30 15:59 ` Andrew Jones
2014-09-16 12:48 ` Andrew Jones
2014-09-18 10:36 ` Paolo Bonzini
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