Commit c16c1131 authored by Christoffer Dall's avatar Christoffer Dall Committed by Marc Zyngier
Browse files

KVM: arm64: Directly call VHE and non-VHE FPSIMD enabled functions 



There is no longer a need for an alternative to choose the right
function to tell us whether or not FPSIMD was enabled for the VM,
because we can simply can the appropriate functions directly from within
the _vhe and _nvhe run functions.

Reviewed-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
Reviewed-by: default avatarAndrew Jones <drjones@redhat.com>
Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent d5a21bcc

arch/arm64/kvm/hyp/switch.c

+3 −12
Original line number Diff line number Diff line
@@ -33,20 +33,11 @@ static bool __hyp_text __fpsimd_enabled_nvhe(void) 
	return !(read_sysreg(cptr_el2) & CPTR_EL2_TFP);

}



static bool __hyp_text __fpsimd_enabled_vhe(void)

static bool fpsimd_enabled_vhe(void)

{

	return !!(read_sysreg(cpacr_el1) & CPACR_EL1_FPEN);

}



static hyp_alternate_select(__fpsimd_is_enabled,

			    __fpsimd_enabled_nvhe, __fpsimd_enabled_vhe,

			    ARM64_HAS_VIRT_HOST_EXTN);



bool __hyp_text __fpsimd_enabled(void)

{

	return __fpsimd_is_enabled()();

}



/* Save the 32-bit only FPSIMD system register state */

static void __hyp_text __fpsimd_save_fpexc32(struct kvm_vcpu *vcpu)

{
@@ -414,7 +405,7 @@ int kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu) 
		/* And we're baaack! */

	} while (fixup_guest_exit(vcpu, &exit_code));



	fp_enabled = __fpsimd_enabled();

	fp_enabled = fpsimd_enabled_vhe();



	sysreg_save_guest_state_vhe(guest_ctxt);

	__vgic_save_state(vcpu);
@@ -481,7 +472,7 @@ int __hyp_text __kvm_vcpu_run_nvhe(struct kvm_vcpu *vcpu) 
		}

	}



	fp_enabled = __fpsimd_enabled();

	fp_enabled = __fpsimd_enabled_nvhe();



	__sysreg_save_state_nvhe(guest_ctxt);

	__sysreg32_save_state(vcpu);

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