On Mon, Feb 07, 2022 at 03:20:56PM +0000, Mark Brown wrote:
SME defines two new traps which need to be enabled for guests to ensure that they can't use SME, one for the main SME operations which mirrors the traps for SVE and another for access to TPIDR2 in SCTLR_EL2.
For VHE manage SMEN along with ZEN in activate_traps() and the FP state management callbacks, along with SCTLR_EL2.EnTPIDR2. There is no existing dynamic management of SCTLR_EL2.
For nVHE manage TSM in activate_traps() along with the fine grained traps for TPIDR2 and SMPRI. There is no existing dynamic management of fine grained traps.
Signed-off-by: Mark Brown broonie@kernel.org
This looks alright to me but I'm not a kvm expert. FWIW:
Reviewed-by: Catalin Marinas catalin.marinas@arm.com