On 2/10/20 1:56 PM, Christian Borntraeger wrote: > > > On 10.02.20 13:50, Cornelia Huck wrote: >> On Mon, 10 Feb 2020 13:06:19 +0100 >> Christian Borntraeger <borntraeger@xxxxxxxxxx> wrote: >> >>> What about the following. I will rip out RC and RRC but add >>> a 32bit flags field (which must be 0) and 3*64 bit reserved. >> >> Probably dumb question: How are these new fields supposed to be used? > > This was planned for error handling in QEMU. As we have no user of rc/rrc > yet, I have ripped that out and added a flag field + 16 bytes of reserved. > Usage is as usual flags must be 0. When flags!=0 the reserved fields will > have a new meaning. > I want to have the rcs because right now we would only output the return value of the ioctl and most UV error codes are mapped to -EINVAL. So if an error occurs, admins would need to match up the crashed VM with the UV debugfs files which might not even exist if debugfs is not mounted... That's also one of the reasons I like having separate create calls for VM and VCPUs.
Attachment:
signature.asc
Description: OpenPGP digital signature
