From: Walther Maldonado <walther.maldonado@unine.ch>
To: <kvm@vger.kernel.org>
Subject: BUG Report: "config KVM" selects PREEMPT_NOTIFIERS, but it should also select PREEMPT (Vanilla Kernel 2.6.30)
Date: Mon, 29 Jun 2009 17:18:55 +0200 [thread overview]
Message-ID: <20090629171855.2820e75a@Xellex> (raw)
Good day,
Today when attempting to compile and install the KVM module (kernel 2.6.30), inserting the module would error with a number of unresolved symbols such as preempt_notifier_register() not found.
Some code-browsing revealed that, even though the kvm KConfig setting "KVM" does select PREEMPT_NOTIFIERS, in include/linux/preempt.h, said define will not cause the expected functions to be defined unless CONFIG_PREEMPT is also selected.
But I don't have CONFIG_PREEMPT (Preemptible Kernel), my kernel was configured with CONFIG_PREEMPT_VOLUNTARY (Voluntary Kernel Preemption). Since the define CONFIG_PREEMPT_NOTIFIERS is used in other files other than preempt.h, the bug might be in KVM's Kconfig file (in my case, arch/x86/kConfig) not selecting/depending on the right config parameters.
Cheers,
Walther
PS: If there is a need to reply, please do so directly as I am not subscribed to the mailing list.
next reply other threads:[~2009-06-29 23:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-29 15:18 Walther Maldonado [this message]
2009-07-01 9:41 ` BUG Report: "config KVM" selects PREEMPT_NOTIFIERS, but it should also select PREEMPT (Vanilla Kernel 2.6.30) Avi Kivity
2009-07-01 13:29 ` Walther Maldonado
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=20090629171855.2820e75a@Xellex \
--to=walther.maldonado@unine.ch \
--cc=kvm@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