Memfd backed memory #4138
Merged
Memfd backed memory #4138
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
ShadowCurse
force-pushed
the
mem_refactor
branch
3 times, most recently
from
0eb43ad
to
6855b36
Compare
Codecov ReportAttention:
Additional details and impacted files@@ Coverage Diff @@
## main #4138 +/- ##
==========================================
+ Coverage 82.95% 82.99% +0.03%
==========================================
Files 221 221
Lines 28501 28568 +67
==========================================
+ Hits 23643 23709 +66
- Misses 4858 4859 +1
Flags with carried forward coverage won't be shown. Click here to find out more.
☔ View full report in Codecov by Sentry. |
ShadowCurse
force-pushed
the
mem_refactor
branch
7 times, most recently
from
61a7c2f
to
e60e35d
Compare
ShadowCurse
added
Status: Awaiting review
kalyazin
reviewed
Sep 29, 2023
ShadowCurse
force-pushed
the
mem_refactor
branch
2 times, most recently
from
2ddd564
to
4193777
Compare
ShadowCurse
force-pushed
the
mem_refactor
branch
from
9b25230
to
1db0fb9
Compare
ShadowCurse
added
the
Status: Blocked
ShadowCurse
force-pushed
the
mem_refactor
branch
from
1db0fb9
to
8d04c58
Compare
ShadowCurse
force-pushed
the
mem_refactor
branch
4 times, most recently
from
ad7471d
to
c75284a
Compare
bchalios
reviewed
Oct 10, 2023
There was a problem hiding this comment.
Commit comment: Could you please format the commit messages? They include random new lines:
For example:
refactor(memory): moved vm_memory from utils
Moved `utils/vm_memory` crate into
`vmm/vstate/memory`.
Removed `utils/vm_memory`.
This module contains `vmm` specific code
and it make sense to have it in `vmm`.
Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
should read:
refactor(memory): moved vm_memory from utils
Moved `utils/vm_memory` crate into `vmm/vstate/memory`. Removed
`utils/vm_memory`.
This module contains `vmm` specific codeand it make sense to have it in
`vmm`.
Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
bchalios
reviewed
Oct 10, 2023
ShadowCurse
force-pushed
the
mem_refactor
branch
from
c75284a
to
773a20a
Compare
|
@bchalios updated the commit messages. |
kalyazin
reviewed
Oct 16, 2023
I opened #6763 for it, but its running into kani timeouts 😒 |
ShadowCurse
force-pushed
the
mem_refactor
branch
2 times, most recently
from
bc8c007
to
61e8321
Compare
kalyazin
reviewed
Oct 16, 2023
ShadowCurse
force-pushed
the
mem_refactor
branch
2 times, most recently
from
b3c224f
to
9a33723
Compare
Moved `utils/vm_memory` crate into `vmm/vstate/memory`. Removed `utils/vm_memory`. This module contains `vmm` specific code and it make sense to have it in `vmm`. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
Moved all volatile related things into separate module. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
Renamed `Error` into `VmMemoryError` We try to avoid usind `Error` word for errors. Renaming it make is clearer what type of error this is. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
Changed names of some variables and used tuple unpacking. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
Moved all content of `memory_snapshot` module into `vstate/memory` module. Now all memory related code is in one place. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
Removed reexports of `vm_memory` error types from `vstate/memory.rs` Renamed `SnapshotMemoryError` into `MemoryError`. Now `memory` only has 1 error type it exposes. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
Changed `SnapshotMemory` trait to `GuestMemoryExtension` and moved all public methods that create GuestMemoryMmap into it. This removed a need for a public `test_utils` module and it makes all methods that directly act on `GuestMemoryMmap` to be associated with it. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
Added method to create `memfd` file with needed size and seals. Added an ability to construct `GuestMemoryMmap` backed by a file. Changed expected error message for failed memory creation in `test_api` test Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
Added `from_raw_regions_file` method to the `GuestMemoryExtension` trait to remove duplicated code that creates file backed `GuestMemoryMap`. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
Added missing unit tests for memory creation methods. Split some unit tests into multiple for better readability. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
Updated `test_negative_file_size_limit` to check file size limit by simply starting a uVM, because now FC creates a memfd file for guest memory. Added positive test to verify that vm starts if limit is not hit. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
ShadowCurse
force-pushed
the
mem_refactor
branch
3 times, most recently
from
d0fea7f
to
995ed7d
Compare
Updated testing for read/write of guard pages. This testing is only possible with gnu target, so all tests that verify guard pages are marked to be compiled only for gnu target. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
Now when memory is backed by the file we store `FileOffset` inside each region. This information will be used to set up vhost-user shared memory. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
Now unit tests are run for musl and gnu targets. This is done, because we have some tests that only work with gnu. Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>
ShadowCurse
force-pushed
the
mem_refactor
branch
from
995ed7d
to
ef94eaf
Compare
bchalios
approved these changes
Oct 17, 2023
kalyazin
approved these changes
Oct 17, 2023
5 tasks
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Changes
Moved all memory related code into
vstate/memory.rsmodule.Added ability to create
memfdfile to back guest memory.License Acceptance
By submitting this pull request, I confirm that my contribution is made under
the terms of the Apache 2.0 license. For more information on following
Developer Certificate of Origin and signing off your commits, please check
CONTRIBUTING.md.PR Checklist
CHANGELOG.md.TODOs link to an issue.rust-vmm.