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Re: [Qemu-devel] how to judge machine's state in user-level/kernel-level
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [Qemu-devel] how to judge machine's state in user-level/kernel-level |
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Date: |
Wed, 23 Feb 2011 07:42:44 +0000 |
On Wed, Feb 23, 2011 at 4:05 AM, Jianhui Yue <address@hidden> wrote:
> hi, All,
> I am wondering how to determine machine's state in user-level
> or kernel level from Operating System perspective.
> what's meaning of CPUState.exception_is_int? Thanks.
If "kernel level from Operating System perspective" means privileged
then you could look at the current privilege level in a target
architecture-specific way. So on x86 look at the code segment
selector.
Stefan