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Date: Wed, 26 Oct 2011 18:02:44 +0200
From: Jan Kiszka <jan.kiszka@siemens.com>
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Subject: Re: [Qemu-devel] [PATCH] Make cpu_single_env thread local (Linux
	only for now)
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To: Peter Maydell <peter.maydell@linaro.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>, "agraf@suse.de" <agraf@suse.de>, "Dr. David Alan Gilbert" <david.gilbert@linaro.org>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, "patches@linaro.org" <patches@linaro.org>

On 2011-10-26 17:18, Peter Maydell wrote:
> On 26 October 2011 16:13, Jan Kiszka <jan.kiszka@siemens.com> wrote:
>> My point is that it is fine to use for per-vcpu variables because:
>>  - they are single-threaded in TCG mode
>>  - they are multi-threaded in KVM mode, but that's only affecting Linux
>>   hosts for which this TLS wrapper is already usable
> 
> Oh, I see. Feel free to suggest reworded comment text :-)

/* Dummy implementations -- we can get away with this because
 *  - we confine the use to per-VCPU variables
 *  - only linux-user supports multiple VCPU threads
 *  - TCG system mode is single-threaded regarding VCPUs
 *  - KVM system mode is multi-threaded but limited to Linux

OK?

Jan

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