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kratart: support for krata channels for two-way byte communication

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This commit is contained in:
Alex Zenla
2024-03-28 05:31:57 +00:00
parent d4f1ee5521
commit 63f7db6cf4
9 changed files with 484 additions and 132 deletions
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14
crates/xen/xengnt/src/sys.rs
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@ -3,7 +3,7 @@ use std::mem::size_of;
use nix::{ioc, ioctl_readwrite_bad};
#[repr(C)]
#[derive(Clone)]
#[derive(Clone, Debug)]
pub struct GrantRef {
pub domid: u32,
pub reference: u32,
@ -33,7 +33,7 @@ impl MapGrantRef {
return None;
}
let index = (*data.get(2)? as u64) << 32 | *data.get(3)? as u64;
let index = (*data.get(2)? as u64) | (*data.get(3)? as u64) << 32;
for i in (4..data.len()).step_by(2) {
let Some(domid) = data.get(i) else {
break;
@ -146,10 +146,10 @@ impl AllocGref {
return None;
}
let index = (*data.get(4)? as u64) << 48
| (*data.get(5)? as u64) << 32
| (*data.get(6)? as u64) << 16
| *data.get(7)? as u64;
let index = (*data.get(4)? as u64)
| (*data.get(5)? as u64) << 16
| (*data.get(6)? as u64) << 32
| (*data.get(7)? as u64) << 48;
for i in (8..data.len()).step_by(2) {
let Some(bits_low) = data.get(i) else {
break;
@ -157,7 +157,7 @@ impl AllocGref {
let Some(bits_high) = data.get(i + 1) else {
break;
};
refs.push((*bits_low as u32) << 16 | *bits_high as u32);
refs.push((*bits_low as u32) | (*bits_high as u32) << 16);
}
Some((index, refs))
}