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Re: [Qemu-devel] [PATCH v7 00/11] target-arm: Parts of the AArch64 EL2/3
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-devel] [PATCH v7 00/11] target-arm: Parts of the AArch64 EL2/3 exception model |
Date: |
Mon, 29 Sep 2014 12:48:15 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2014-09-29 12:41, Peter Maydell wrote:
> On 29 September 2014 11:31, Jan Kiszka <address@hidden> wrote:
>> Sorry for hijacking the thread, but it seems related: These bits address
>> AArch64, but what is the status of AArch32 /wrt hyp mode emulation?
>> After playing with the "fast" model, I would be glad to find such
>> support in QEMU rather sooner than later.
>
> I don't think anybody is currently working on that,
> though it is an obvious gap to fill in at some point.
>
> I would caution against testing hypervisors on QEMU
> rather than against hardware or the Fast Model,
> except for anything other than basic smoke tests,
> though -- there are a lot of complications and corner
> cases in the architecture here and I expect we will
> spend some time flushing out bugs as OSes expose
> them.
No difference with nested virt for KVM: I fixed several corner cases
along the way of getting Jailhouse running on x86. This time we already
have a working baseline, so shaking out bugs might be even easier. What
matters more mid- and long-term is the round-trip time, in fact.
Jan
--
Siemens AG, Corporate Technology, CT RTC ITP SES-DE
Corporate Competence Center Embedded Linux
- [Qemu-devel] [PATCH v7 06/11] target-arm: A64: Correct updates to FAR and ESR on exceptions, (continued)
- [Qemu-devel] [PATCH v7 06/11] target-arm: A64: Correct updates to FAR and ESR on exceptions, Edgar E. Iglesias, 2014/09/26
- [Qemu-devel] [PATCH v7 07/11] target-arm: A64: Emulate the HVC insn, Edgar E. Iglesias, 2014/09/26
- [Qemu-devel] [PATCH v7 08/11] target-arm: Add a Hypervisor Trap exception type, Edgar E. Iglesias, 2014/09/26
- [Qemu-devel] [PATCH v7 10/11] target-arm: Add IRQ and FIQ routing to EL2 and 3, Edgar E. Iglesias, 2014/09/26
- [Qemu-devel] [PATCH v7 11/11] target-arm: Add support for VIRQ and VFIQ, Edgar E. Iglesias, 2014/09/26
- [Qemu-devel] [PATCH v7 03/11] target-arm: A64: Refactor aarch64_cpu_do_interrupt, Edgar E. Iglesias, 2014/09/26
- [Qemu-devel] [PATCH v7 09/11] target-arm: A64: Emulate the SMC insn, Edgar E. Iglesias, 2014/09/26
- Re: [Qemu-devel] [PATCH v7 00/11] target-arm: Parts of the AArch64 EL2/3 exception model, Peter Maydell, 2014/09/26