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[Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a V
From: |
Srivatsa Vaddagiri |
Subject: |
[Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2) |
Date: |
Thu, 2 Dec 2010 17:52:22 +0530 |
User-agent: |
Mutt/1.5.20 (2009-06-14) |
On Thu, Dec 02, 2010 at 05:17:00PM +0530, Srivatsa Vaddagiri wrote:
> Just was wondering how this would work in case of buggy guests. Lets say that
> a
> guest ran into a AB<->BA deadlock. VCPU0 spins on lock B (held by VCPU1
> currently), while VCPU spins on lock A (held by VCPU0 currently). Both keep
> boosting each other's vruntime, potentially affecting fairtime for other
> guests
> (to the point of starving them perhaps)?
Guests that exhibit strong spinlock contentions can cause similar symptoms as
well?
- vatsa
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), (continued)
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Srivatsa Vaddagiri, 2010/12/02
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Avi Kivity, 2010/12/02
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Srivatsa Vaddagiri, 2010/12/02
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Avi Kivity, 2010/12/02
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Srivatsa Vaddagiri, 2010/12/02
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Avi Kivity, 2010/12/02
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Srivatsa Vaddagiri, 2010/12/02
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Srivatsa Vaddagiri, 2010/12/02
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2),
Srivatsa Vaddagiri <=
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Avi Kivity, 2010/12/02