From: ebiederm@xmission.com (Eric W. Biederman)
To: Zachary Amsden <zach@vmware.com>
Cc: Linus Torvalds <torvalds@osdl.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Virtualization Mailing List <virtualization@lists.osdl.org>,
Xen-devel <xen-devel@lists.xensource.com>,
Andrew Morton <akpm@osdl.org>, Dan Hecht <dhecht@vmware.com>,
Dan Arai <arai@vmware.com>, Anne Holler <anne@vmware.com>,
Pratap Subrahmanyam <pratap@vmware.com>,
Christopher Li <chrisl@vmware.com>,
Joshua LeVasseur <jtl@ira.uka.de>, Chris Wright <chrisw@osdl.org>,
Rik Van Riel <riel@redhat.com>, Jyothy Reddy <jreddy@vmware.com>,
Jack Lo <jlo@vmware.com>, Kip Macy <kmacy@fsmware.com>,
Jan Beulich <jbeulich@novell.com>,
Ky Srinivasan <ksrinivasan@novell.com>,
Wim Coekaerts <wim.coekaerts@oracle.com>,
Leendert van Doorn <leendert@watson.ibm.com>,
Zachary Amsden <zach@vmware.com>
Subject: Re: [RFC, PATCH 14/24] i386 Vmi reboot fixes
Date: Wed, 15 Mar 2006 14:11:52 -0700 [thread overview]
Message-ID: <m1ek13xvjb.fsf@ebiederm.dsl.xmission.com> (raw)
In-Reply-To: <200603131809.k2DI9slZ005727@zach-dev.vmware.com> (Zachary Amsden's message of "Mon, 13 Mar 2006 10:09:54 -0800")
Zachary Amsden <zach@vmware.com> writes:
> Fix reboot to work with the VMI. We must support fallback to the standard
> BIOS reboot mechanism. Turns out that this is required by kexec, and a good
> idea for native hardware.
Huh? Rebooting through the BIOS and kexec are pretty much mutually exclusive.
Looking at the patch I can't see what you are talking about either.
Does kexec successfully work under VMWare?
> We simply insert the NOP VMI reboot hook before
> calling the BIOS reboot. While here, fix SMP reboot issues as well. The
> problem is the halt() macro in VMI has been defined to be equivalent to
> safe_halt(), which enables interrupts. Several call sites actually want to
> disable interrupts and shutdown the processor, which is what VMI_Shutdown()
> does.
machine_halt actually is not one of those places.
machine_halt does not want to stop the processor. It is very much
about killing the kernel and user space but having the software still
linger a little.
This needs a cleaner abstraction to make sense or go in.
Eric
prev parent reply other threads:[~2006-03-15 21:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-13 18:09 [RFC, PATCH 14/24] i386 Vmi reboot fixes Zachary Amsden
2006-03-15 21:11 ` Eric W. Biederman
2006-03-15 23:24 ` Zachary Amsden
2006-03-16 5:03 ` Eric W. Biederman
2006-03-15 21:11 ` Eric W. Biederman [this message]
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