tree 28fafd30cdbadbfd0948941baafb84305ec65ce2
parent 1b849d7f7bdd00244631e7233ae1fe3520e00339
author Nicholas Piggin <npiggin@gmail.com> 1718169786 +1000
committer Thomas Huth <thuth@redhat.com> 1718368747 +0200

powerpc: Add facility to query TCG or KVM host

Use device tree properties to determine whether KVM or TCG is in
use.

Logically these are not the inverse of one another, because KVM can run
on a TCG processor (if TCG is emulating HV mode, or it is using the
nested hypervisor APIs in pseries / spapr). And kvm-unit-tests can run
on that KVM.

This can be a problem because some issues relate to TCG CPU emulation
some to the spapr hypervisor implementation, some to KVM, some to real
hardware, so the TCG test is best-effort for now and is set to the
opposite of KVM. The two independent variables are added because we may
be able to more accurately determine this in future.

Use this facility to restrict some of the known test failures to TCG.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-ID: <20240612052322.218726-2-npiggin@gmail.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>