[PATCH] KVM: arm64: nvhe: Ignore SVE hint in SMCCC function ID

[Marc Zyngier]

On Mon, 11 Sep 2023 15:52:57 +0100, Jean-Philippe Brucker wrote:
> When SVE is enabled, the host may set bit 16 in SMCCC function IDs, a
> hint that indicates an unused SVE state. At the moment NVHE doesn't
> account for this bit when inspecting the function ID, and rejects most
> calls. Clear the hint bit before comparing function IDs.
> 
> About version compatibility: the host's PSCI driver initially probes the
> firmware for a SMCCC version number. If the firmware implements a
> protocol recent enough (1.3), subsequent SMCCC calls have the hint bit
> set. Since the hint bit was reserved in earlier versions of the
> protocol, clearing it is fine regardless of the version in use.
> 
> [...]

Applied to fixes, thanks!

[1/1] KVM: arm64: nvhe: Ignore SVE hint in SMCCC function ID
      commit: 373beef00f7d781a000b12c31fb17a5a9c25969c

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.