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ANDROID: KVM: arm64: Relax SMCCC version check during FF-A proxy init

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Although FF-A claims to require version v1.2 of SMCCC, in reality the
current set of calls work just fine with v1.1 and some devices ship with
EL3 firmware that advertises this configuration.

Allow pKVM to proxy FF-A calls for these devices by relaxing our SMCCC
version check to permit SMCCC v1.1+

Reported-by: Alan Stokes <alanstokes@google.com>
Bug: 222663556
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I41e9ff35f169df3609acee7bbc67999c1d11c9d1
This commit is contained in:
Will Deacon
2022-03-04 17:24:25 +00:00
parent 4345c3db84
commit e085ccb3db
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/kvm/hyp/nvhe/ffa.c
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@@ -643,7 +643,7 @@ int hyp_ffa_init(void *pages)
size_t min_rxtx_sz;
void *tx, *rx;
if (kvm_host_psci_config.smccc_version < ARM_SMCCC_VERSION_1_2)
if (kvm_host_psci_config.smccc_version < ARM_SMCCC_VERSION_1_1)
return 0;
arm_smccc_1_1_smc(FFA_VERSION, FFA_VERSION_1_0, 0, 0, 0, 0, 0, 0, &res);