arm64: Detect FEAT_DoubleFault2

KVM will soon support FEAT_DoubleFault2. Add a descriptor for the
corresponding ID register field.

Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250708172532.1699409-3-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
This commit is contained in:
Oliver Upton 2025-07-08 10:25:07 -07:00
commit e3fd66620f