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From: | Avi Kivity |
Subject: | Re: [Qemu-devel] Register uhci_reset() callback. |
Date: | Tue, 16 Jun 2009 18:18:17 +0300 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b3pre) Gecko/20090513 Fedora/3.0-2.3.beta2.fc11 Lightning/1.0pre Thunderbird/3.0b2 |
On 06/16/2009 06:00 PM, Jamie Lokier wrote:
Avi Kivity wrote:On 06/11/2009 07:40 PM, Gleb Natapov wrote:Now, a CPU-only reset, such as triple fault on x86, that's a bit different.On x86 triple fault wired to system reset.Some actually wire triple fault (shutdown) to init. It's pretty broken.That sounds useful, actually, for those 286 OSes which use triple-fault to switch from protected mode to real mode. No need to reinitialise all the hardware if it just restarts the CPU.
Ah, I remember now. But on modern hardware it breaks badly. Intel processors block INIT if vmx is enabled, and the rest of the hardware isn't reset so it could be dmaing all over the place.
-- error compiling committee.c: too many arguments to function
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