From: Casey Leedom <leedom@chelsio.com>
To: kvm@vger.kernel.org
Subject: Re: KVM vs. PCI-E Function Level Reset (FLR) ...
Date: Wed, 14 Jul 2010 17:55:26 -0700 [thread overview]
Message-ID: <201007141755.26185.leedom@chelsio.com> (raw)
In-Reply-To: <201007150033.o6F0XUBj024880@stargate.chelsio.com>
We've done a bit of testing and determined that the KVM support code does
call pci_reset_function() from kvm_free_assigned_device() when a Virtual Machine
is powered down. But pci_reset_function() is not called when a Virtual
Machine is rebooted. It really should be reset for a reboot to track what
happens to a Physical Host when a reboot is performed ...
We've also determined that writing the FLR bit in the PCI-E Express Capability
in an Assigned Device from the Guest OS/Driver does not result in a call to
pci_reset_function() in the Hypervisor. This seems to be a problem ...
Casey
next parent reply other threads:[~2010-07-15 1:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <201007150033.o6F0XUBj024880@stargate.chelsio.com>
2010-07-15 0:55 ` Casey Leedom [this message]
2010-07-13 20:41 KVM vs. PCI-E Function Level Reset (FLR) Casey Leedom
2010-07-14 0:53 ` Sheng Yang
2010-07-14 18:01 ` Casey Leedom
2010-07-15 1:31 ` Sheng Yang
[not found] ` <201007150839.37130.leedom@chelsio.com>
2010-07-15 16:06 ` Casey Leedom
2010-07-16 0:56 ` Sheng Yang
2010-07-16 17:29 ` Casey Leedom
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