Merge tag 'dirtylimit-dirtyrate-pull-request-20231010' of https://github.com/newfrida...

Merge tag 'dirtylimit-dirtyrate-pull-request-20231010' of https://github.com/newfriday/qemu into staging

Dirtylimit and dirtyrate 20231010 patches PULL request

Dirty page rate measurement optimization.
Please apply, thanks, Yong.

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# gpg: Signature made Mon 09 Oct 2023 20:08:45 EDT
# gpg:                using RSA key 685D0220DC264828152E57C2DFF223D6B3FECB9C
# gpg:                issuer "yong.huang@smartx.com"
# gpg: Good signature from "Yong Huang <yong.huang@smartx.com>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 685D 0220 DC26 4828 152E  57C2 DFF2 23D6 B3FE CB9C

* tag 'dirtylimit-dirtyrate-pull-request-20231010' of https://github.com/newfriday/qemu:
  migration/dirtyrate: use QEMU_CLOCK_HOST to report start-time
  migration/calc-dirty-rate: millisecond-granularity period

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>