On aarch64, the memory region below the kernel can be used for
dynamic allocation. Consequently, the assertion should allow
this region.

732: revise aarch64 support r=stlankes a=stlankes

- add TLS support
- revise processor detection
- add function to switch the context
- revise stack handling
- initialize interrupt controller

Co-authored-by: Stefan Lankes <slankes@eonerc.rwth-aachen.de>

- add TLS support
- revise processor detection
- add function to switch the context
- revise stack handling

- in addition, add some comments

731: don't leak memory if the environment is empty r=stlankes a=stlankes



Co-authored-by: Stefan Lankes <slankes@eonerc.rwth-aachen.de>

730: remove trailing null characters r=stlankes a=stlankes

- revert also #729 

Co-authored-by: Stefan Lankes <slankes@eonerc.rwth-aachen.de>

- this character isn't required

This reverts commit f677532b.

729: remove typo r=stlankes a=stlankes



Co-authored-by: Stefan Lankes <slankes@eonerc.rwth-aachen.de>

728: move hardware independent function is_uhyve to env r=stlankes a=stlankes



Co-authored-by: Stefan Lankes <slankes@eonerc.rwth-aachen.de>

726: remove obsolete function `detect_from_uhyve` r=jounathaen a=stlankes

- minor improvements to #725
- removing obsolete code

Co-authored-by: Stefan Lankes <slankes@eonerc.rwth-aachen.de>

725: don't initialize IO-APIC for uhyve r=jounathaen a=stlankes

uhyve doesn't support a common IO-APIC. Consequently, libhermit should not initialize the IO-APIC

Co-authored-by: Stefan Lankes <slankes@eonerc.rwth-aachen.de>

uhyve doesn't support a common IO-APIC. Consequently, libhermit
should not initialize the IO-APIC

724: add check if the idle task has to give up the processor r=stlankes a=stlankes

- simplifies the run function of the scheduler
- avoids unneeded calls of the function `schedule`

Co-authored-by: Stefan Lankes <slankes@eonerc.rwth-aachen.de>

- only the idle task should call `run`
- consequently, the idle task check can be removed

723: remove deprecated functions and use hermit-dtb from crates.io r=stlankes a=stlankes



Co-authored-by: Stefan Lankes <slankes@eonerc.rwth-aachen.de>

719: Add basic docs for timer and semaphore syscalls r=stlankes a=nathanwhyte

Helping with issue #353

Added _(very)_ basic documentation to syscalls in [`timer.rs`](https://github.com/hermitcore/libhermit-rs/blob/master/src/syscalls/timer.rs) and [`semaphore.rs`](https://github.com/hermitcore/libhermit-rs/blob/master/src/syscalls/semaphore.rs

)

I used Linux man pages as a reference when writing these.

Co-authored-by: Nathan Whyte <nathanwhyte35@gmail.com>

721: build(deps): bump bitflags from 2.1.0 to 2.2.1 r=mkroening a=dependabot[bot]

Bumps [bitflags](https://github.com/bitflags/bitflags) from 2.1.0 to 2.2.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/bitflags/bitflags/releases">bitflags's releases</a>.</em></p>
<blockquote>
<h2>2.2.1</h2>
<h2>What's Changed</h2>
<ul>
<li>Refactor attribute filtering to apply per-flag by <a href="https://github.com/KodrAus"><code>`@​KodrAus</code></a>` in <a href="https://redirect.github.com/bitflags/bitflags/pull/345">bitflags/bitflags#345</a></li>
<li>Prepare for 2.2.1 release by <a href="https://github.com/KodrAus"><code>`@​KodrAus</code></a>` in <a href="https://redirect.github.com/bitflags/bitflags/pull/346">bitflags/bitflags#346</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/bitflags/bitflags/compare/2.2.0...2.2.1">https://github.com/bitflags/bitflags/compare/2.2.0...2.2.1</a></p>
<h2>2.2.0 (yanked)</h2>
<h2>What's Changed</h2>
<ul>
<li>Create SECURITY.md by <a href="https://github.com/KodrAus"><code>`@​KodrAus</code></a>` in <a href="https://redirect.github.com/bitflags/bitflags/pull/338">bitflags/bitflags#338</a></li>
<li>add docs to describe the behavior of multi-bit flags by <a href="https://github.com/nicholasbishop"><code>`@​nicholasbishop</code></a>` in <a href="https://redirect.github.com/bitflags/bitflags/pull/340">bitflags/bitflags#340</a></li>
<li>Add support for bytemuck by <a href="https://github.com/KodrAus"><code>`@​KodrAus</code></a>` in <a href="https://redirect.github.com/bitflags/bitflags/pull/336">bitflags/bitflags#336</a></li>
<li>Add a top-level macro for filtering attributes by <a href="https://github.com/KodrAus"><code>`@​KodrAus</code></a>` in <a href="https://redirect.github.com/bitflags/bitflags/pull/341">bitflags/bitflags#341</a></li>
<li>Prepare for 2.2.0 release by <a href="https://github.com/KodrAus"><code>`@​KodrAus</code></a>` in <a href="https://redirect.github.com/bitflags/bitflags/pull/342">bitflags/bitflags#342</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/nicholasbishop"><code>`@​nicholasbishop</code></a>` made their first contribution in <a href="https://redirect.github.com/bitflags/bitflags/pull/340">bitflags/bitflags#340</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/bitflags/bitflags/compare/2.1.0...2.2.0">https://github.com/bitflags/bitflags/compare/2.1.0...2.2.0</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/bitflags/bitflags/blob/main/CHANGELOG.md">bitflags's changelog</a>.</em></p>
<blockquote>
<h1>2.2.1</h1>
<h2>What's Changed</h2>
<ul>
<li>Refactor attribute filtering to apply per-flag by <a href="https://github.com/KodrAus"><code>`@​KodrAus</code></a>` in <a href="https://redirect.github.com/bitflags/bitflags/pull/345">bitflags/bitflags#345</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/bitflags/bitflags/compare/2.2.0...2.2.1">https://github.com/bitflags/bitflags/compare/2.2.0...2.2.1</a></p>
<h1>2.2.0</h1>
<h2>What's Changed</h2>
<ul>
<li>Create SECURITY.md by <a href="https://github.com/KodrAus"><code>`@​KodrAus</code></a>` in <a href="https://redirect.github.com/bitflags/bitflags/pull/338">bitflags/bitflags#338</a></li>
<li>add docs to describe the behavior of multi-bit flags by <a href="https://github.com/nicholasbishop"><code>`@​nicholasbishop</code></a>` in <a href="https://redirect.github.com/bitflags/bitflags/pull/340">bitflags/bitflags#340</a></li>
<li>Add support for bytemuck by <a href="https://github.com/KodrAus"><code>`@​KodrAus</code></a>` in <a href="https://redirect.github.com/bitflags/bitflags/pull/336">bitflags/bitflags#336</a></li>
<li>Add a top-level macro for filtering attributes by <a href="https://github.com/KodrAus"><code>`@​KodrAus</code></a>` in <a href="https://redirect.github.com/bitflags/bitflags/pull/341">bitflags/bitflags#341</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/nicholasbishop"><code>`@​nicholasbishop</code></a>` made their first contribution in <a href="https://redirect.github.com/bitflags/bitflags/pull/340">bitflags/bitflags#340</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/bitflags/bitflags/compare/2.1.0...2.2.0">https://github.com/bitflags/bitflags/compare/2.1.0...2.2.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/bitflags/bitflags/commit/0c318c0d77ed63ad4ee9bfdf1d2c486993b18b37"><code>0c318c0</code></a> Merge pull request <a href="https://redirect.github.com/bitflags/bitflags/issues/346">#346</a> from KodrAus/cargo/2.2.1</li>
<li><a href="https://github.com/bitflags/bitflags/commit/a51c0532865ccd26de1a55d212ba90304199c463"><code>a51c053</code></a> prepare for 2.2.1 release</li>
<li><a href="https://github.com/bitflags/bitflags/commit/638707f0f0a38499dbc4cfdd7ef10d8106647309"><code>638707f</code></a> Merge pull request <a href="https://redirect.github.com/bitflags/bitflags/issues/345">#345</a> from KodrAus/fix/recursion</li>
<li><a href="https://github.com/bitflags/bitflags/commit/f3f3b6a7b00f79e05601afe07fe806d36fddd846"><code>f3f3b6a</code></a> add docs to example generated flags</li>
<li><a href="https://github.com/bitflags/bitflags/commit/588d13298ea5ba0ab37c57c947e0a47fe5335c8a"><code>588d132</code></a> refactor attribute filtering to apply per-flag</li>
<li><a href="https://github.com/bitflags/bitflags/commit/cbcafa710fc31172511e62efa06ad9eb214e4734"><code>cbcafa7</code></a> Merge pull request <a href="https://redirect.github.com/bitflags/bitflags/issues/342">#342</a> from KodrAus/cargo/2.2.0</li>
<li><a href="https://github.com/bitflags/bitflags/commit/61df53a791cfdd681bc4adcea12796c0bdef1ca5"><code>61df53a</code></a> prepare for 2.2.0 release</li>
<li><a href="https://github.com/bitflags/bitflags/commit/780f456840a2c2755b574397b3297e213a1e8b9f"><code>780f456</code></a> Merge pull request <a href="https://redirect.github.com/bitflags/bitflags/issues/341">#341</a> from KodrAus/fix/doc-alias</li>
<li><a href="https://github.com/bitflags/bitflags/commit/405e7de8ee8d9fea1ecf67a7bd234a9bcf45c3b9"><code>405e7de</code></a> updates macro field names</li>
<li><a href="https://github.com/bitflags/bitflags/commit/561fe509b081b2bf4d71a279389a03b9c3207b01"><code>561fe50</code></a> add a top-level macro for filtering attributes</li>
<li>Additional commits viewable in <a href="https://github.com/bitflags/bitflags/compare/2.1.0...2.2.1">compare view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=bitflags&package-manager=cargo&previous-version=2.1.0&new-version=2.2.1)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores

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720: build(deps): bump dsaltares/fetch-gh-release-asset from 1.1.0 to 1.1.1 r=mkroening a=dependabot[bot]

Bumps [dsaltares/fetch-gh-release-asset](https://github.com/dsaltares/fetch-gh-release-asset) from 1.1.0 to 1.1.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/dsaltares/fetch-gh-release-asset/releases">dsaltares/fetch-gh-release-asset's releases</a>.</em></p>
<blockquote>
<h2>1.1.1</h2>
<h2>What's Changed</h2>
<ul>
<li>fix: 50 - actually default version to latest by <a href="https://github.com/dsaltares"><code>`@​dsaltares</code></a>` in <a href="https://redirect.github.com/dsaltares/fetch-gh-release-asset/pull/56">dsaltares/fetch-gh-release-asset#56</a></li>
<li>Bump json5 from 1.0.1 to 1.0.2 by <a href="https://github.com/dependabot"><code>`@​dependabot</code></a>` in <a href="https://redirect.github.com/dsaltares/fetch-gh-release-asset/pull/55">dsaltares/fetch-gh-release-asset#55</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/dependabot"><code>`@​dependabot</code></a>` made their first contribution in <a href="https://redirect.github.com/dsaltares/fetch-gh-release-asset/pull/55">dsaltares/fetch-gh-release-asset#55</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/dsaltares/fetch-gh-release-asset/compare/1.1.0...1.1.1">https://github.com/dsaltares/fetch-gh-release-asset/compare/1.1.0...1.1.1</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/dsaltares/fetch-gh-release-asset/commit/a40c8b4a0471f9ab81bdf73a010f74cc51476ad4"><code>a40c8b4</code></a> Bump json5 from 1.0.1 to 1.0.2 (<a href="https://redirect.github.com/dsaltares/fetch-gh-release-asset/issues/55">#55</a>)</li>
<li><a href="https://github.com/dsaltares/fetch-gh-release-asset/commit/5a71312bcb7a436e89a7dd26123cdbdd7b3df709"><code>5a71312</code></a> fix: 50 - actually default version to latest (<a href="https://redirect.github.com/dsaltares/fetch-gh-release-asset/issues/56">#56</a>)</li>
<li>See full diff in <a href="https://github.com/dsaltares/fetch-gh-release-asset/compare/1.1.0...1.1.1">compare view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=dsaltares/fetch-gh-release-asset&package-manager=github_actions&previous-version=1.1.0&new-version=1.1.1)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores

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Bumps [bitflags](https://github.com/bitflags/bitflags) from 2.1.0 to 2.2.1.
- [Release notes](https://github.com/bitflags/bitflags/releases)
- [Changelog](https://github.com/bitflags/bitflags/blob/main/CHANGELOG.md)
- [Commits](https://github.com/bitflags/bitflags/compare/2.1.0...2.2.1

)

---
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  dependency-type: direct:production
  update-type: version-update:semver-minor
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Bumps [dsaltares/fetch-gh-release-asset](https://github.com/dsaltares/fetch-gh-release-asset) from 1.1.0 to 1.1.1.
- [Release notes](https://github.com/dsaltares/fetch-gh-release-asset/releases)
- [Commits](https://github.com/dsaltares/fetch-gh-release-asset/compare/1.1.0...1.1.1

)

---
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  dependency-type: direct:production
  update-type: version-update:semver-patch
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716: virtio-net: Replace AsSliceU8 trait with zerocopy::AsBytes. r=mkroening a=joannejchen

Changed VirtioNetHdr to derive from AsBytes instead of AsSliceU8 and changed related functions as necessary.


Co-authored-by: Joanne Chen <joannejc@cs.utexas.edu>