On Sat, Sep 03, 2022 at 04:37:12AM +0000, Michael Kelley (LINUX) wrote: > From: Wei Liu <wei.liu@xxxxxxxxxx> Sent: Wednesday, July 13, 2022 8:19 AM > > > > On Tue, Jul 12, 2022 at 04:24:12PM +0000, Michael Kelley (LINUX) wrote: > > > From: Alexander Atanasov <alexander.atanasov@xxxxxxxxxxxxx> Sent: Monday, July > > 11, 2022 11:18 AM > > > > > > > > Allow the guest to know how much it is ballooned by the host. > > > > It is useful when debugging out of memory conditions. > > > > > > > > When host gets back memory from the guest it is accounted > > > > as used memory in the guest but the guest have no way to know > > > > how much it is actually ballooned. > > > > > > > > Expose current state, flags and max possible memory to the guest. > > > > While at it - fix a 10+ years old typo. > > > > > > > > Signed-off-by: Alexander Atanasov <alexander.atanasov@xxxxxxxxxxxxx> > > > > --- > > [...] > > > > > > Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx> > > > > I added "Drivers: hv:" prefix to the subject line and applied it to > > hyperv-next. Thanks. > > Alexander -- I finally caught up on the long discussion of balloon > driver reporting that occurred over much of August. I think your > original plan had been for each of the balloon driver to report > useful information in debugfs. But as a result of the discussion, > it looks like virtio-balloon will be putting the information in > /proc/meminfo. If that's the case, it seems like we should > drop these changes to the Hyper-V balloon driver, and have > the Hyper-V balloon driver take the same approach as > virtio-balloon. The debugfs interface contains far more information than what can be put into meminfo. That being said, I can send a PR to revert the changes if we need time to wait for the other discussion to come to an conclusion. > > These Hyper-V balloon driver changes have already gone > into 6.0-rc1. If we're going to drop them, we should do > the revert before 6.0 is done. > Agreed. Michael, let me know what you think. Thanks, Wei. > Thoughts? > > Michael
