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Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types
From: |
Anthony Liguori |
Subject: |
Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types |
Date: |
Thu, 21 Feb 2013 11:32:24 -0600 |
User-agent: |
Notmuch/0.13.2+93~ged93d79 (http://notmuchmail.org) Emacs/23.3.1 (x86_64-pc-linux-gnu) |
David Woodhouse <address@hidden> writes:
> On Thu, 2013-02-21 at 18:10 +0100, Laszlo Ersek wrote:
>> Since
>> - I like kvm, and
>> - I cannot easily change my hardware (which doesn't support UG), and
>> - I prefer to run the RHEL-6 kernel which has "old" KVM,
>> I depend on David's fix for the PAM registers.
>
> Which means your suspend/resume is broken. Yay! :)
>
> Anthony's patchset should hopefully fix that.
Will post a new version later today. Am testing now with Laszlo's mock
up from a previous note.
I'm also going to write a qtest test case to try and validate all of
this behavior (minus the KVM bits).
> I wonder what it would take to work around the KVM bug in qemu though;
> can we actually *emulate* 16-bit mode instead of using KVM, on the
> kernels where KVM is broken? And then transition back to using KVM when
> we switch to 32-bit or 64-bit mode?
It's in the realm of possibility but ugly enough that we never did it.
I even worked on this way back in the day with Xen. It sucked pretty
bad. The challenge in support SMP eventually scared me off of it.
http://new-wiki.xen.org/old-wiki/xenwiki/HVM/V2E.html
Regards,
Anthony Liguori
>
> --
> dwmw2
- Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types, (continued)
- Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types, David Woodhouse, 2013/02/21
- Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types, Laszlo Ersek, 2013/02/21
- Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types, David Woodhouse, 2013/02/21
- Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types, Anthony Liguori, 2013/02/21
- Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types, David Woodhouse, 2013/02/21
- Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types, Laszlo Ersek, 2013/02/21
- Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types, David Woodhouse, 2013/02/21
- Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types, Paolo Bonzini, 2013/02/21
- Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types, Anthony Liguori, 2013/02/21
- Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types, Laszlo Ersek, 2013/02/21
- Re: [Qemu-devel] [edk2] [RFC PATCH] Distinguish between reset types,
Anthony Liguori <=
- [Qemu-devel] OvmfPkg reset [was: Distinguish between reset types], Laszlo Ersek, 2013/02/21
- Re: [Qemu-devel] [edk2] OvmfPkg reset [was: Distinguish between reset types], Paolo Bonzini, 2013/02/21
- Re: [Qemu-devel] [edk2] OvmfPkg reset [was: Distinguish between reset types], Laszlo Ersek, 2013/02/21
- Re: [Qemu-devel] [RFC PATCH] Distinguish between reset types, David Woodhouse, 2013/02/20
- Re: [Qemu-devel] [RFC PATCH] Distinguish between reset types, Paolo Bonzini, 2013/02/19
- Re: [Qemu-devel] [RFC PATCH] Distinguish between reset types, Peter Maydell, 2013/02/19
- Re: [Qemu-devel] [RFC PATCH] Distinguish between reset types, Peter Crosthwaite, 2013/02/20
- Re: [Qemu-devel] [RFC PATCH] Distinguish between reset types, Peter Maydell, 2013/02/20
- Re: [Qemu-devel] [RFC PATCH] Distinguish between reset types, Peter Crosthwaite, 2013/02/20
- Re: [Qemu-devel] [RFC PATCH] Distinguish between reset types, Peter Maydell, 2013/02/20