From: p9 newbie <rgandhasri@gmail.com>
To: 9fans@9fans.net
Subject: [9fans] plan9: how to get irq to mach routing
Date: Thu, 24 Jan 2013 10:00:01 +0000 [thread overview]
Message-ID: <a8717927-4f79-4636-a5b0-6510adf1258c@googlegroups.com> (raw)
Hi,
I would like to retrieve what IRQs are routed to what Machs (or lapics). I dumped IOAPIC's Redirection Table entries, but Destination bits [63:48] are always '0xFF'. Is there way to determine the routing between IRQs and Machs/LAPICs serving them?. One rudimentary way I tried is that, in the interrupt service routine I accessed the 'm' (Mach *) external variable to figure the routing between the IRQ and and the Mach.. Wondering if there is a better way. (for all legacy, msi and msi-x interrupt types)
Thanks
rg
next reply other threads:[~2013-01-24 10:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-24 10:00 p9 newbie [this message]
2013-01-24 16:22 ` erik quanstrom
2013-01-25 9:54 ` p9 newbie
2013-01-25 15:31 ` erik quanstrom
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