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ANDROID: KVM: arm64: Use helper to get the host fpsimd state in pKVM

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Subsequent patches will change how the fpsimd state is allocated,
and add tracking of sve state. Moving this to a helper makes
future code cleaner and patches easier to reason about.

No functional change intended.

Signed-off-by: Fuad Tabba <tabba@google.com>

Bug: 267291591
Change-Id: Ic46b8889c1fe11f0cfdd7b5f3d2b98bf412183f0
This commit is contained in:
Fuad Tabba
2023-02-13 08:54:55 +00:00
committed by Lee Jones
parent fe89068583
commit dfd5d02bca
1 changed files with 7 additions and 2 deletions
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9
arch/arm64/kvm/hyp/nvhe/hyp-main.c
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@@ -419,6 +419,11 @@ static const hyp_entry_exit_handler_fn exit_hyp_vm_handlers[] = {
[ESR_ELx_EC_DABT_LOW] = handle_vm_exit_abt,
};
static struct user_fpsimd_state *get_host_fpsimd_state(void)
{
return this_cpu_ptr(&loaded_host_fpsimd_state);
}
static void flush_hyp_vgic_state(struct pkvm_hyp_vcpu *hyp_vcpu)
{
struct kvm_vcpu *host_vcpu = hyp_vcpu->host_vcpu;
@@ -689,7 +694,7 @@ static void fpsimd_host_restore(void)
struct pkvm_hyp_vcpu *hyp_vcpu = pkvm_get_loaded_hyp_vcpu();
struct user_fpsimd_state *host_fpsimd_state;
host_fpsimd_state = this_cpu_ptr(&loaded_host_fpsimd_state);
host_fpsimd_state = get_host_fpsimd_state();
if (vcpu_has_sve(&hyp_vcpu->vcpu))
__hyp_sve_save_guest(hyp_vcpu);
@@ -733,7 +738,7 @@ static void handle___pkvm_vcpu_load(struct kvm_cpu_context *host_ctxt)
*last_ran = hyp_vcpu->vcpu.vcpu_id;
}
hyp_vcpu->vcpu.arch.host_fpsimd_state = this_cpu_ptr(&loaded_host_fpsimd_state);
hyp_vcpu->vcpu.arch.host_fpsimd_state = get_host_fpsimd_state();
hyp_vcpu->vcpu.arch.fp_state = FP_STATE_HOST_OWNED;
if (pkvm_hyp_vcpu_is_protected(hyp_vcpu)) {