Messages in this thread | | | From | Jason Wang <> | Date | Mon, 11 Sep 2023 14:56:58 +0800 | Subject | Re: [PATCH 0/2] vdpa: Add logging operatins |
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Adding Eugenio and Si Wei.
On Sat, Aug 26, 2023 at 9:24 AM Jiang Dongxu <jiangdongxu1@huawei.com> wrote: > > From: jiangdongxu <jiangdongxu1@huawei.com> > > Currently, the vdpa device supports suspend and resume operations. > To support vdpa device live migration, we need to support logging > operations and device state save/load opertions. > > These series introduces some new operations for vdpa devices. > They allow vdpa to enable logging while vm start live migration. > > And I will submit another patches about saving and loading > vdpa device state later.
Thanks for working on this, I have several questions:
1) Is there an example implementation of the logging in the drivers? We need a real user in order to merge this. 2) Is the logging based on IOVA or VA? How the DMA isolation is being done with this? Do we need a SET_LOGGING_ASID uAPI for this? (We had some discussion on this in the past).
Thanks
> > jiangdongxu (2): > vdpa: add log operations > vhost-vdpa: add uAPI for logging > > drivers/vhost/vdpa.c | 49 ++++++++++++++++++++++++++++++++++++++ > include/linux/vdpa.h | 14 +++++++++++ > include/uapi/linux/vhost.h | 4 ++++ > 3 files changed, 67 insertions(+) > > -- > 2.27.0 >
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