[v2] tools/hvmloader: Decouple APIC IDs from vCPU IDs

[PATCH v2 0/2] tools/hvmloader: Decouple APIC IDs from vCPU IDs

Alejandro Vallejo posted 2 patches 1 month, 1 week ago

Diff against v1 v3
Download series mbox

Patches applied successfully (tree, apply log)
git fetch https://gitlab.com/xen-project/patchew/xen tags/patchew/20250204144542.7399-1-alejandro.vallejo@cloud.com

There is a newer version of this series

tools/firmware/hvmloader/config.h    |  3 +-
tools/firmware/hvmloader/hvmloader.c |  6 ++--
tools/firmware/hvmloader/mp_tables.c |  2 +-
tools/firmware/hvmloader/smp.c       | 43 +++++++++++++++++++++++++++-
tools/firmware/hvmloader/util.c      |  2 +-
5 files changed, 49 insertions(+), 7 deletions(-)

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[PATCH v2 0/2] tools/hvmloader: Decouple APIC IDs from vCPU IDs

Posted by Alejandro Vallejo 1 month, 1 week ago

v1->v2:
  * Dropped patch to skip writing the MP Tables if apicid >= 255

v1: https://lore.kernel.org/xen-devel/20250128163342.1491-1-alejandro.vallejo@cloud.com/
source series: https://lore.kernel.org/xen-devel/20241021154600.11745-5-alejandro.vallejo@cloud.com/

The hypervisor, hvmloader and the toolstack currently engage in a shared
assumption that for every vCPU apicid == 2 * vcpuid. This series removes such
assumption from hvmloader, by making it read the APIC ID of each vCPU and
storing it for later use.

Alejandro Vallejo (2):
  tools/hvmloader: Retrieve APIC IDs from the APs themselves
  tools/hvmloader: Replace LAPIC_ID() with cpu_to_apicid[]

 tools/firmware/hvmloader/config.h    |  3 +-
 tools/firmware/hvmloader/hvmloader.c |  6 ++--
 tools/firmware/hvmloader/mp_tables.c |  2 +-
 tools/firmware/hvmloader/smp.c       | 43 +++++++++++++++++++++++++++-
 tools/firmware/hvmloader/util.c      |  2 +-
 5 files changed, 49 insertions(+), 7 deletions(-)

-- 
2.48.1