Hi Richard,
On 11/25/2013 10:49 AM, Richard Yao wrote:
I booted a Gentoo Linux installation in QEMU with a 9P rootfs as follows:
sudo qemu-kvm -cpu host -m 1024 -kernel
/mnt/test/usr/src/linux-3.13-rc1/arch/x86/boot/bzImage -append
'root=/dev/root rootfstype=9p
I use it all the time, but I have not updated to a more recent kernel yet. I am
at LinuxCon, so I am unlikely to try it until I get home.
On Aug 21, 2014, at 2:50 PM, Christopher Covington c...@codeaurora.org
wrote:
Hi Richard,
On 11/25/2013 10:49 AM, Richard Yao wrote:
I booted a
Hi Richard,
On 11/25/2013 04:50 PM, Richard Yao wrote:
I figured out the problem. There is zerocopy IO is being done via DMA to
a buffer allocated with valloc(). Right now, I am running a hack-fix
locally so I can get some other stuff done first. I will propose a
proper fix to the list in a
Christopher,
It sounds like you disabled zero-copy entirely, which is not necessary.
As far as I recall, loading kernel modules is the only case in which
valloc() allocated buffers are used. In the worst case, we only need to
disable zero-copy on such buffers. I have been using a small patch to
I have this bad habit of not reviewing emails until after I send them.
Anyway, Chris, thanks for your offer of help, but I can handle this on
my own. The previous email was mostly to give you an early version of
the patch and let you know what I plan to do to improve upon it before I
propose some
I figured out the problem. There is zerocopy IO is being done via DMA to
a buffer allocated with valloc(). Right now, I am running a hack-fix
locally so I can get some other stuff done first. I will propose a
proper fix to the list in a few days.
On 11/25/2013 10:49 AM, Richard Yao wrote:
I
