tree 2ffae55466b787819a6f974abefb4bf67a6d442c
parent 27e9fdb07d0e26993ada336e63de88c25548e4dc
author Joshua Seaton <joshuaseaton@google.com> 1611734027 +0000
committer CQ Bot <commit-bot@chromium.org> 1611734027 +0000

[kernel][x86][topology] Refactor x86 topology enumeration

We replace the use of cpu_id::CpuId (deprecated) with the new lib/arch
CpuidIo-based abstractions, specifically leveraging the newly introduced
arch::ApicIdDecoder and arch::CpuCacheInfo.

Existing tests still pass. We also continue to boot fine on QEMU (with
varied topology parameters) and the NUC, not falling back to the
'fallback' topology and dumping out the expected topology on boot.

Bug: 61093
Change-Id: I3348252297412601e6abf1bedb4e485dd2969f4f
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/465898
Commit-Queue: Joshua Seaton <joshuaseaton@google.com>
Reviewed-by: Venkatesh Srinivas <venkateshs@google.com>
Reviewed-by: Travis Geiselbrecht <travisg@google.com>
Reviewed-by: Corey Tabaka <eieio@google.com>
Reviewed-by: Roland McGrath <mcgrathr@google.com>