hyperlight-guest 0.14.0

Provides only the essential building blocks for interacting with the host environment, including the VM exit mechanism, abstractions for calling host functions and receiving return values, and the input/output stacks used for guest-host communication.
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/*
Copyright 2025  The Hyperlight Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
 */

#[cfg_attr(target_arch = "x86_64", path = "arch/amd64/prim_alloc.rs")]
#[cfg_attr(target_arch = "x86", path = "arch/i686/prim_alloc.rs")]
mod arch;

/// Allocate n contiguous physical pages and return the physical
/// addresses of the pages in question.
/// # Safety
/// Since this reads and writes specific allocator state addresses, it
/// is only safe when the allocator has been set up properly. It may
/// become less safe in the future.
///
/// # Panics
/// This function will panic if memory allocation fails
///
/// This is defined in an arch-specific module because it reads and
/// writes the actual allocator state with inline assembly in order to
/// access it atomically according to the architecture memory model
/// rather than the Rust memory model: the stronger constraints of the
/// latter cannot be perfectly satisfied due to the lack of per-byte
/// atomic memcpy in the host.
pub use arch::alloc_phys_pages;