Struct MemSideCache 

pub struct MemSideCache {
    pub size: u64,
    pub associativity: u8,
    pub write_policy: u8,
    pub line_size: u16,
}

Re-exports of topology types for use in KtstrTestEntry statics generated by the #[ktstr_test] macro. HMAT Type 2 memory-side cache descriptor.

Models a hardware cache between the CPU and memory on this node (e.g. CXL HDM decoder cache, HBM cache). Emitted as an HMAT Memory Side Cache Information Structure.

associativity and write_policy occupy 4-bit nibbles in the HMAT cache_attributes field. Values above 15 are invalid.

Fields

size: u64

Cache size in bytes.

associativity: u8

Cache associativity (0=none, 1=direct-mapped, 2=complex). Must be <= 15 (4-bit field).

write_policy: u8

Write policy (0=none, 1=write-back, 2=write-through). Must be <= 15 (4-bit field).

line_size: u16

Cache line size in bytes.

Implementations

impl MemSideCache

pub const fn new( size: u64, associativity: u8, write_policy: u8, line_size: u16, ) -> Self

Const constructor with validation.

Panics

Panics if associativity > 15 or write_policy > 15 (4-bit HMAT nibble fields).

pub fn validate(&self) -> Result<(), String>

Non-panicking validation.

Trait Implementations

impl Clone for MemSideCache

fn clone(&self) -> MemSideCache

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MemSideCache

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for MemSideCache

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for MemSideCache

fn eq(&self, other: &MemSideCache) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for MemSideCache

impl Eq for MemSideCache

impl StructuralPartialEq for MemSideCache