From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 08/14] KVM: ARM: World-switch implementation
Date: Fri, 30 Nov 2012 17:14:21 +0000 [thread overview]
Message-ID: <20121130171420.GC619@mudshark.cambridge.arm.com> (raw)
In-Reply-To: <CANM98q+TQZiXe3GLjcPpPVZz40emmizgnEmyZEju1ruKNR6EEQ@mail.gmail.com>
On Fri, Nov 30, 2012 at 04:47:40PM +0000, Christoffer Dall wrote:
> On Fri, Nov 30, 2012 at 10:15 AM, Will Deacon <will.deacon@arm.com> wrote:
> > At this point, VM1 is running and VM0:VCPU1 is running. VM0:VCPU0 is not
> > running because physical CPU0 is handling an interrupt. The problem is that
> > when VCPU0 *is* resumed, it will update the VMID of VM0 and could be
> > scheduled in parallel with VCPU1 but with a different VMID.
> >
> > How do you avoid this in the current code?
> >
> I don't. Nice catch. Please apply your interesting brain to the following fix:)
I'm far too sober to look at your patch right now, but I'll think about it
over the weekend [I can't break it at a quick glance] :)
In the meantime, can you think about whether the TLB operations need to run
on every CPU please?
Will
next prev parent reply other threads:[~2012-11-30 17:14 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-10 15:42 [PATCH v4 00/14] KVM/ARM Implementation Christoffer Dall
2012-11-10 15:42 ` [PATCH v4 01/14] ARM: Add page table and page defines needed by KVM Christoffer Dall
2012-11-19 14:14 ` Will Deacon
2012-11-29 15:57 ` Christoffer Dall
2012-11-30 11:46 ` Will Deacon
2012-11-30 15:54 ` Christoffer Dall
2012-11-10 15:42 ` [PATCH v4 02/14] ARM: Section based HYP idmap Christoffer Dall
2012-11-19 14:16 ` Will Deacon
2012-11-29 18:59 ` Christoffer Dall
2012-11-30 10:58 ` Will Deacon
2012-11-30 16:29 ` Christoffer Dall
2012-11-19 14:25 ` Rob Herring
2012-11-10 15:42 ` [PATCH v4 03/14] ARM: Factor out cpuid implementor and part number Christoffer Dall
2012-11-19 14:21 ` Will Deacon
2012-11-29 21:38 ` Christoffer Dall
2012-11-30 10:21 ` Will Deacon
2012-11-30 15:42 ` Christoffer Dall
2012-11-10 15:42 ` [PATCH v4 04/14] KVM: ARM: Initial skeleton to compile KVM support Christoffer Dall
2012-11-19 14:41 ` Will Deacon
2012-11-29 22:36 ` Christoffer Dall
2012-11-10 15:42 ` [PATCH v4 05/14] KVM: ARM: Hypervisor inititalization Christoffer Dall
2012-11-19 14:51 ` Will Deacon
2012-11-19 15:27 ` Cyril Chemparathy
2012-11-30 5:41 ` Christoffer Dall
2012-11-10 15:42 ` [PATCH v4 06/14] KVM: ARM: Memory virtualization setup Christoffer Dall
2012-11-19 14:53 ` Will Deacon
2012-11-19 15:05 ` Christoffer Dall
2012-11-10 15:42 ` [PATCH v4 07/14] KVM: ARM: Inject IRQs and FIQs from userspace Christoffer Dall
2012-11-19 14:55 ` Will Deacon
2012-11-19 15:04 ` Christoffer Dall
2012-11-19 15:26 ` Will Deacon
2012-11-19 16:09 ` Christoffer Dall
2012-11-19 16:21 ` Will Deacon
2012-11-30 6:13 ` Christoffer Dall
2012-11-10 15:43 ` [PATCH v4 08/14] KVM: ARM: World-switch implementation Christoffer Dall
2012-11-19 14:57 ` Will Deacon
2012-11-30 6:37 ` Christoffer Dall
2012-11-30 15:15 ` Will Deacon
2012-11-30 16:47 ` Christoffer Dall
2012-11-30 17:14 ` Will Deacon [this message]
2012-11-30 18:49 ` Christoffer Dall
2012-12-03 10:33 ` Marc Zyngier
2012-12-03 15:05 ` Christoffer Dall
2012-11-10 15:43 ` [PATCH v4 09/14] KVM: ARM: Emulation framework and CP15 emulation Christoffer Dall
2012-11-19 15:01 ` Will Deacon
2012-11-19 15:27 ` [kvmarm] " Peter Maydell
2012-11-20 2:18 ` Rusty Russell
2012-11-30 20:22 ` Christoffer Dall
2012-12-03 11:05 ` Will Deacon
2012-12-03 19:09 ` Christoffer Dall
2012-11-10 15:43 ` [PATCH v4 10/14] KVM: ARM: User space API for getting/setting co-proc registers Christoffer Dall
2012-11-19 15:02 ` Will Deacon
2012-11-30 6:42 ` Christoffer Dall
2012-11-10 15:43 ` [PATCH v4 11/14] KVM: ARM: Demux CCSIDR in the userspace API Christoffer Dall
2012-11-19 15:03 ` Will Deacon
2012-11-30 6:45 ` Christoffer Dall
2012-11-10 15:43 ` [PATCH v4 12/14] KVM: ARM: VFP userspace interface Christoffer Dall
2012-11-10 15:43 ` [PATCH v4 13/14] KVM: ARM: Handle guest faults in KVM Christoffer Dall
2012-11-19 15:07 ` Will Deacon
2012-11-30 21:40 ` Christoffer Dall
2012-12-03 13:06 ` Will Deacon
2012-12-03 15:02 ` Christoffer Dall
2012-11-10 15:43 ` [PATCH v4 14/14] KVM: ARM: Handle I/O aborts Christoffer Dall
2012-11-19 15:09 ` Will Deacon
2012-11-30 14:46 ` Dave Martin
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