Anirudh Rayabharam 9446dad1d0 arch: aarch64: extract cache topology collection into a helper ...

Both arch/src/aarch64/fdt.rs and vmm/src/cpu.rs declared the same
~14 cache info locals (size/line_size/sets for L1D/L1I/L2/L3, plus
shared flags for L2/L3), checked for /sys/devices/system/cpu/cpu0/cache,
and populated those locals via get_cache_size /
get_cache_coherency_line_size / get_cache_number_of_sets /
get_cache_shared. Two near-identical ~30-line blocks.

Add a CacheTopologyInfo struct in arch/src/aarch64/cache.rs whose
field names mirror the existing locals, plus a read_cache_topology()
helper that returns None when the sysfs hierarchy is missing and
only queries get_cache_shared for L2/L3 when their size is non-zero
(preserving current behavior).

Both call sites now obtain the info via read_cache_topology() and
destructure it back into locals of the same name, so all downstream
references are unchanged.

Assisted-by: Copilot-CLI:Claude-Opus-4.7
Signed-off-by: Anirudh Rayabharam <anrayabh@microsoft.com>

2026-07-06 16:31:21 +00:00

..

src

arch: aarch64: extract cache topology collection into a helper

2026-07-06 16:31:21 +00:00

Cargo.toml

arch: Helper functions for u32 hex (de-) serialization

2026-05-28 15:19:15 +00:00