From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: "Haifeng He" <hehaifeng2nd@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Load interrupt code dynamically
Date: Wed, 1 Aug 2007 01:03:04 +0100 [thread overview]
Message-ID: <20070801010304.757f4963@the-village.bc.nu> (raw)
In-Reply-To: <ab08258e0707311426r32dc15cexb6867648bc6a45a4@mail.gmail.com>
> dealing with the concurrency in the kernel. Interrupt is one of them.
Its extremely hard as you've probably noticed by now.
> My first question is, what are other interrupts in the kernel that can
> allow other interrupts
> to be issued? Second question is, how does the kernel switch between
The kernel IRQ handling is pretty flexible. A concious decision was made
many years ago not to try and limit it to do a pageable kernel as RAM was
far cheaper than the pain, and getting cheaper by the day.
> different interrupts? Last, any suggestion on how to change my current
> implementation to enable loading interrupt code dynamically?
Realistically - the one case it is done right now is by the mainframe
people, simply because the underlying hypervisor does it. You probably
have much more chance that way using a microkernel (real one not MACH)
underneath. Still a huge task.
next prev parent reply other threads:[~2007-07-31 23:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-31 21:26 Haifeng He
2007-08-01 0:03 ` Alan Cox [this message]
2007-08-01 11:06 ` Andi Kleen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20070801010304.757f4963@the-village.bc.nu \
--to=alan@lxorguk.ukuu.org.uk \
--cc=hehaifeng2nd@gmail.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®