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aarch64: Mirror PRESENT and VALID bits in Page and Table descriptors

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This commit is contained in:
Robin Randhawa
2021-01-15 15:54:25 +00:00
parent c5e077546a
commit 76129ddf75
1 changed files with 2 additions and 2 deletions
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4
src/arch/aarch64/paging/entry.rs
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@@ -15,10 +15,10 @@ pub struct PageDescriptor(u64);
bitflags! {
pub struct TableDescriptorFlags: u64 {
const PRESENT = 1 << 0;
const VALID = 1 << 0;
const TABLE = 1 << 1;
const AF = 1 << 10; /* NOTE: TableDescriptors don't actually have an AF bit! */
const PRESENT = 1 << 58; /* ARM ARM says this is an IGNORED bit, so using it here should be OK */
const PXNTABLE = 1 << 59;
const UXNTABLE = 1 << 60;
const APTABLE_0 = 1 << 61;
@@ -32,6 +32,7 @@ bitflags! {
bitflags! {
pub struct PageDescriptorFlags: u64 {
const PRESENT = 1 << 0;
const VALID = 1 << 0;
const PAGE = 1 << 1;
const ATTR_INDEX_0 = 1 << 2;
@@ -48,7 +49,6 @@ bitflags! {
const CONTIGUOUS = 1 << 52;
const PXN = 1 << 53;
const UXN = 1 << 54;
const PRESENT = 1 << 58; /* Assuming DBM can be overloaded as PRESENT */
}
}