From: valmikibow@gmail.com (valmiki)
To: linux-arm-kernel@lists.infradead.org
Subject: Why MSI is limited to 32 MSI's per device
Date: Tue, 14 Jun 2016 14:58:36 +0000 (UTC) [thread overview]
Message-ID: <loom.20160614T164843-937@post.gmane.org> (raw)
Hi,
Why MSI interrupts are limited to 32 per device ?
We have 16 bit data, with which we can have 2^16 combinaitons of different
data, which in turn those many MSI vectors.
Other than increase in number interrupts to 2048 in MSI-X, what advantage we
get by using MSI-X over MSI.
I read MSI-X interrupts can be targeted to different CPU's in an SMP system.
why can't MSI interrupts can be targeted to different processors ?
Thanks & Regards,
Valmiki
next reply other threads:[~2016-06-14 14:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-14 14:58 valmiki [this message]
2016-06-14 15:45 ` Why MSI is limited to 32 MSI's per device Mark Rutland
2016-06-15 6:39 ` valmiki
2016-06-15 12:49 ` Arnd Bergmann
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