From: Marc Zyngier <marc.zyngier@arm.com>
To: Christoffer Dall <christoffer.dall@linaro.org>,
Fernando Endo <fernando.endo2@gmail.com>
Cc: kvmarm@lists.cs.columbia.edu
Subject: Re: [Question] Linux 3.10 supporting AArch64 KVM
Date: Tue, 15 Mar 2016 11:43:12 +0000 [thread overview]
Message-ID: <56E7F550.4030501@arm.com> (raw)
In-Reply-To: <20160313181852.GB15988@cbox>
On 13/03/16 18:18, Christoffer Dall wrote:
> On Sat, Mar 12, 2016 at 12:22:17PM +0100, Fernando Endo wrote:
>> Hello,
>>
>> I'd like to know what kernel versions KVM is known to work for AArch64.
>> More specifically, if the Linux 3.10 of the Nvidia Tegra TX1 could support
>> KVM.
>>
>> The released 3.10 kernel does not have the KVM flags enabled, so I suspect
>> that this version does not actually support KVM for AArch64.
>
> I believe KVM for AArch64 was merged in 3.9, but it was a very early
> version of the code, so I wouldn't recommend basing anything off that.
That was KVM for AArch32. AArch64 support was merged in 3.11 IIRC. But I
wouldn't want to run anything based on this indeed. We've fixed so many
bugs it's not even funny!
>
> You could look at the backports for LSK 3.10
> (https://git.linaro.org/?p=kernel/linux-linaro-stable.git;a=shortlog;h=refs/heads/linux-linaro-lsk-v3.10)
> but I can't make any promises of the quality of that code.
>
> Does the Tegra TX1 board you have even boot Linux in EL2 or haven an
> open bootloader? If not, I would expect this to be your biggest
> troubles.
I have seen traces indicating that the kernel is indeed entered at EL2.
Also, mainline seems to run on TX1, at least to some extent.
Fernando: if you're eager to try KVM on this system, mainline might be a
much better option (assuming you don't need any of the fancy stuff).
Thanks,
M.
--
Jazz is not dead. It just smells funny...
prev parent reply other threads:[~2016-03-15 11:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-12 11:22 [Question] Linux 3.10 supporting AArch64 KVM Fernando Endo
2016-03-13 18:18 ` Christoffer Dall
2016-03-15 11:43 ` Marc Zyngier [this message]
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