Re: one question about your patch "vhost: log dirty page correctly"

Adding lists.

On Wed, Feb 9, 2022 at 4:58 AM Michael S. Tsirkin [off-list ref] wrote:

On Tue, Feb 08, 2022 at 11:37:00AM -0800, Xingyu Li wrote:

quoted

Hi Jason,

Sorry to disturb you. I have a question about your Linux kernel
patch-- 1981e4c9a97("vhost: log dirty page correctly"). I noted that the commit
message says that the fix tag of this patch is 6b1e6cc7855b ("vhost: new device
IOTLB API"). It also says that the bug occured when try to log GIOVA.However,
when I look at the the commit diff of the 6b1e6cc7855b, I do not find the
related contents to modify the vhost_log_write() or some log-related functions.
Can you give me some guidance on this?

So the logic is: 6b1e6cc7855b doesn't touch vhost_log_write() so the
log is wrong since vhost_log_write() is based on GPA. That's why I
wrote 1981e4c9a97 where I translated GIOVA to GPA before doing the
log.

quoted

--
Yours sincerely,
Xingyu

Pls CC mailing list on questions. I have a policy against replying
off list.

Right.

Thanks

Thanks!

--
MST

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