On Tue, 22 Mar 2022 18:35:35 +0000, Oliver Upton wrote:
> This series addresses a couple of issues with how KVM exposes SMC64
> calls to its guest. It is currently possible for an AArch32 guest to
> discover the SMC64 SYSTEM_RESET2 function (via
> PSCI_1_0_FN_PSCI_FEATURES) and even make a call to it. SMCCC does not
> allow for 64 bit calls to be made from a 32 bit state.
>
> Patch 1 cleans up the way we filter SMC64 calls in PSCI. Using a switch
> with case statements for each possibly-filtered function is asking for
> trouble. Instead, pivot off of the bit that indicates the desired
> calling convention. This plugs the PSCI_FEATURES hole for SYSTEM_RESET2.
>
> [...]
Applied to fixes, thanks!
[1/3] KVM: arm64: Generally disallow SMC64 for AArch32 guests
commit: 905ec3226f8150f73838a36cb79ba79e1d789e8e
[2/3] KVM: arm64: Actually prevent SMC64 SYSTEM_RESET2 from AArch32
commit: 3e1b3dbad320e1532fdf09e5b80e35d62a0fd82b
[3/3] KVM: arm64: Drop unneeded minor version check from PSCI v1.x handler
commit: 8872d9b3e35a0ecb80d6413bba403d4aaf49af63
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
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