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Re: [Qemu-devel] [PATCH 15/35] tcg-s390: Query instruction extensions th
From: |
Richard Henderson |
Subject: |
Re: [Qemu-devel] [PATCH 15/35] tcg-s390: Query instruction extensions that are installed. |
Date: |
Mon, 14 Jun 2010 09:20:20 -0700 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-3.fc13 Thunderbird/3.0.4 |
On 06/13/2010 03:23 PM, Alexander Graf wrote:
> On 13.06.2010, at 18:44, Aurelien Jarno wrote:
>> Is KVM in 31-bit mode actually functional?
>
> I'm not aware of anything preventing it to be. But I honestly haven't
> tried. As long as all hypercall parameters stay within the first
> 32/31 bits, things should be safe.
On the other hand, is there any point in supporting it?
This does seem to be a case for which it does seem like
having the extra VM space (KVM+TCG) and the extra register
size (TCG) is extremely helpful.
I'd be just as happy to adjust the configury to actively
prevent compilation in 31-bit mode, rather than pretend
it might work and never bother to test it...
r~
- Re: [Qemu-devel] [PATCH 15/35] tcg-s390: Query instruction extensions that are installed., (continued)
- Re: [Qemu-devel] [PATCH 15/35] tcg-s390: Query instruction extensions that are installed., Aurelien Jarno, 2010/06/10
- Re: [Qemu-devel] [PATCH 15/35] tcg-s390: Query instruction extensions that are installed., Richard Henderson, 2010/06/11
- Re: [Qemu-devel] [PATCH 15/35] tcg-s390: Query instruction extensions that are installed., Aurelien Jarno, 2010/06/13
- Re: [Qemu-devel] [PATCH 15/35] tcg-s390: Query instruction extensions that are installed., Richard Henderson, 2010/06/13
- Re: [Qemu-devel] [PATCH 15/35] tcg-s390: Query instruction extensions that are installed., Aurelien Jarno, 2010/06/13
- Re: [Qemu-devel] [PATCH 15/35] tcg-s390: Query instruction extensions that are installed., Alexander Graf, 2010/06/13
- Re: [Qemu-devel] [PATCH 15/35] tcg-s390: Query instruction extensions that are installed.,
Richard Henderson <=
- Re: [Qemu-devel] [PATCH 15/35] tcg-s390: Query instruction extensions that are installed., Alexander Graf, 2010/06/14
[Qemu-devel] [PATCH 16/35] tcg-s390: Re-implement tcg_out_movi., Richard Henderson, 2010/06/04
[Qemu-devel] [PATCH 17/35] tcg-s390: Implement sign and zero-extension operations., Richard Henderson, 2010/06/04
[Qemu-devel] [PATCH 18/35] tcg-s390: Implement bswap operations., Richard Henderson, 2010/06/04
[Qemu-devel] [PATCH 19/35] tcg-s390: Implement rotates., Richard Henderson, 2010/06/04