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ANDROID: KVM: arm64: Add 'host_smc_handler' to kvm_iommu_ops

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IOMMU drivers need to intercept power management SMCs between the host
and EL3. Add a hook to hyp's 'handle_host_smc'.

Test: builds, boots
Bug: 190463801
Change-Id: Ied34b60d4bb0e5ae0fbf03f8ce1dc22a09679e37
Signed-off-by: David Brazdil <dbrazdil@google.com>
(cherry picked from commit d2efcdcb2b)
Signed-off-by: Mostafa Saleh <smostafa@google.com>
This commit is contained in:
David Brazdil
2021-06-29 19:14:45 +00:00
committed by Mostafa Saleh
parent 350761f479
commit 71ecd86274
2 changed files with 3 additions and 0 deletions
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1
arch/arm64/include/asm/kvm_hyp.h
View File

@@ -133,6 +133,7 @@ extern unsigned int kvm_nvhe_sym(kvm_arm_vmid_bits);
extern bool kvm_nvhe_sym(smccc_trng_available);
struct kvm_iommu_ops {
int (*init)(void);
bool (*host_smc_handler)(struct kvm_cpu_context *host_ctxt);
};
extern struct kvm_iommu_ops kvm_iommu_ops;

2
arch/arm64/kvm/hyp/nvhe/hyp-main.c
View File

@@ -1194,6 +1194,8 @@ static void handle_host_smc(struct kvm_cpu_context *host_ctxt)
bool handled;
handled = kvm_host_psci_handler(host_ctxt);
if (!handled && kvm_iommu_ops.host_smc_handler)
handled = kvm_iommu_ops.host_smc_handler(host_ctxt);
if (!handled)
handled = kvm_host_ffa_handler(host_ctxt);
if (!handled)