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Yunju_K_
Beginner
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Message Address Register: Redirection hint & Destination mode

Intel® 64 and IA-32 Architectures Software Developer’s Manual
Volume 3 (3A, 3B, 3C & 3D): System Programming Guide
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I have a question about the combination of RH bit and DM bit of 10.11.1 Message Address Register Format.

I use the combination as below, it looks like work is going well.
RH = 0
DM = 1

But, there are following mentions in 10.11.1, so the combination of RH = 0 and DM = 1 looks like the wrong combination.

>If RH is 0, then the DM bit is ignored and the message is sent ahead
>independent of whether the physical orlogical destination mode is used.

If wrong, which combination should I use?

My system is AMP(Asymmetric Multiprocessing)system, and it needs to send the MSI interrupt to the plural processors without the lowest interrupt priority.

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Yunju_K_
Beginner
86 Views

Does anybody know about this?

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