This is a reland of commit d39e5811df
This change mark VolatileRef as deprecated instead of removing it
completely. This change also removed all related methods and functions
using VolatileRef that libcras don't use.
Original change's description:
> data_model: remove VolatileRef
>
> All uses except in test code have been eliminated, so we can remove it
> now.
>
> This was an unsafe abstraction, and we have better alternatives (such as
> the read_obj()/write_obj() functions) that do not create a long-lived
> mutable reference that could easily alias other slices.
>
> BUG=None
> TEST=tools/presubmit --all
>
> Change-Id: I84f1e2487d6211ce24b8fc992fa7675765870132
> Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3824000
> Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
> Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
> Reviewed-by: Alexandre Courbot <acourbot@chromium.org>
TESTED=CQ
BUG=b:204409584
FIXED=b:236759218
Change-Id: I4019870a2321fcd8610669862b5e6ed9bf7c2282
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4215512
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Commit-Queue: Zihan Chen <zihanchen@google.com>
Handling page faults using userfaultfd for all the time after vmm-swap
is enabled originally has overhead. By disabling swapping, we can use
crosvm without the overhead when the crosvm become used heavily again.
This also refactor PageHandler and extract register logic to lib.rs.
BUG=b:215093219
TEST=cargo test -p swap
Change-Id: Id81d84ebe40067b4f19b212f6b81cbaf249c0c3c
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4005474
Reviewed-by: David Stevens <stevensd@chromium.org>
Commit-Queue: Shin Kawamura <kawasin@google.com>
