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`library/std/src/sys/sgx/abi/usercalls/alloc.rs` nicer
- Use `.addr()` instead of `as`-cast
- Use `add` instead of `offset` and remove some `as isize` casts by doing that
- Remove some casts
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Use pointer `is_aligned*` methods
This PR replaces some manual alignment checks with calls to `pointer::{is_aligned, is_aligned_to}` and removes a useless pointer cast.
r? `@scottmcm`
_split off from #100746_
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r=Mark-Simulacrum
Update fortanix-sgx-abi and export some useful SGX usercall traits
Update `fortanix-sgx-abi` to 0.5.0 to add support for cancel queue (see https://github.com/fortanix/rust-sgx/pull/405 and https://github.com/fortanix/rust-sgx/pull/404).
Export some useful traits for processing SGX usercall. This is needed for https://github.com/fortanix/rust-sgx/pull/404 to avoid duplication.
cc `@raoulstrackx` and `@jethrogb`
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In order to mitigate the Stale Data Read for xAPIC vulnerability completely, reading userspace from an SGX enclave must be aligned and in 8-bytes chunks.
References:
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00657.html
- https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/advisory-guidance/stale-data-read-from-xapic.html
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Update fortanix-sgx-abi to 0.5.0 to add support for cancel queue (see
https://github.com/fortanix/rust-sgx/pull/405 and
https://github.com/fortanix/rust-sgx/pull/404).
Export some useful traits for processing SGX usercall. This is needed
for https://github.com/fortanix/rust-sgx/pull/404 to avoid duplication.
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Intel Security Advisory: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00615.html
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Run `./x.py` fmt
Add reference link
Fix reference link
Apply review suggestions.
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