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Re: GNU Mach: disabling all network device drivers

From: Da Zheng
Subject: Re: GNU Mach: disabling all network device drivers
Date: Wed, 09 Jun 2010 15:09:23 +0800
User-agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv: Gecko/20100317 Thunderbird/3.0.4

On 10-6-9 下午2:24, Samuel Thibault wrote:
> Zheng Da, le Wed 09 Jun 2010 01:22:48 -0400, a écrit :
>> So which instruction triggers the trap? nop or movl?
> movl, but it's not its ofwn fault.
> My guess is that right after sti, an interrupt is triggered while nop is
> being executed, gets handled after nop is executed, and we return to
> movl, but somehow the return doesn't reactivate the kernel pagetable or
> privilege. Looking at the registers you have again, I see
> cs                 0x8
> ds                0x10
> These are correct. So that must the the pagetable that is incorrect.
> Check out cr3 and such.
How do I check cr3? show registers doesn't give cr3.

Zheng Da

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