[SRU][N:linux-intel][PATCH 0/1] Register TDX host key IDs to cgroup misc controller

[Thibault Ferrante]

BugLink: https://bugs.launchpad.net/bugs/2104946

[ Impact ]

 * Expose upper limit of TDs through cgroup v2 misc subsystem.

[ Fix ]

 * Backport upstream submission :
https://lore.kernel.org/all/20250220170604.2279312-31-pbonzini@redhat.com/

[ Test Plan ]

 * Compiled and Tested on TDX supported hardware by:
 - Enabling TDX support (procedure described in https://github.com/canonical/tdx)
 - `sudo mount -t cgroup2 none mnt/`
 - Check mnt/misc.capacity for a TDX entry
 - Check mnt/misc.current for TDX usage when starting

[ Where problems could occur ]

 * Regression in confidential TDX subsystem

[ Other info ]

 - This has been specifically requested for noble:linux-intel, not other series (for now).

Zhiming Hu (1):
  UBUNTU: SAUCE: KVM: TDX: Register TDX host key IDs to cgroup misc
    controller

 arch/x86/include/asm/tdx.h  |  2 ++
 arch/x86/kvm/vmx/tdx.c      | 15 +++++++++++++++
 arch/x86/kvm/vmx/tdx.h      |  1 +
 arch/x86/virt/vmx/tdx/tdx.c |  6 ++++++
 include/linux/misc_cgroup.h |  4 ++++
 kernel/cgroup/misc.c        |  5 +++++
 6 files changed, 33 insertions(+)

-- 
2.48.1