KVM: arm/arm64: Move arm64-only vgic-v2-sr.c file to arm64

The vgic-v2-sr.c file now only contains the logic to replay unaligned
accesses to the virtual CPU interface on 16K and 64K page systems, which
is only relevant on 64-bit platforms.  Therefore move this file to the
arm64 KVM tree, remove the compile directive from the 32-bit side
makefile, and remove the ifdef in the C file.

Since this file also no longer saves/restores anything, rename the file
to vgic-v2-cpuif-proxy.c to more accurately describe the logic in this
file.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

1 files changed, 0 insertions, 80 deletions

diff --git a/virt/kvm/arm/hyp/vgic-v2-sr.c b/virt/kvm/arm/hyp/vgic-v2-sr.c
deleted file mode 100644
index 0bbafdf..0000000
--- a/virt/kvm/arm/hyp/vgic-v2-sr.c
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright (C) 2012-2015 - ARM Ltd
- * Author: Marc Zyngier <marc.zyngier@arm.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/compiler.h>
-#include <linux/irqchip/arm-gic.h>
-#include <linux/kvm_host.h>
-
-#include <asm/kvm_emulate.h>
-#include <asm/kvm_hyp.h>
-#include <asm/kvm_mmu.h>
-
-#ifdef CONFIG_ARM64
-/*
- * __vgic_v2_perform_cpuif_access -- perform a GICV access on behalf of the
- *				     guest.
- *
- * @vcpu: the offending vcpu
- *
- * Returns:
- *  1: GICV access successfully performed
- *  0: Not a GICV access
- * -1: Illegal GICV access
- */
-int __hyp_text __vgic_v2_perform_cpuif_access(struct kvm_vcpu *vcpu)
-{
-	struct kvm *kvm = kern_hyp_va(vcpu->kvm);
-	struct vgic_dist *vgic = &kvm->arch.vgic;
-	phys_addr_t fault_ipa;
-	void __iomem *addr;
-	int rd;
-
-	/* Build the full address */
-	fault_ipa  = kvm_vcpu_get_fault_ipa(vcpu);
-	fault_ipa |= kvm_vcpu_get_hfar(vcpu) & GENMASK(11, 0);
-
-	/* If not for GICV, move on */
-	if (fault_ipa <  vgic->vgic_cpu_base ||
-	    fault_ipa >= (vgic->vgic_cpu_base + KVM_VGIC_V2_CPU_SIZE))
-		return 0;
-
-	/* Reject anything but a 32bit access */
-	if (kvm_vcpu_dabt_get_as(vcpu) != sizeof(u32))
-		return -1;
-
-	/* Not aligned? Don't bother */
-	if (fault_ipa & 3)
-		return -1;
-
-	rd = kvm_vcpu_dabt_get_rd(vcpu);
-	addr  = kern_hyp_va((kern_hyp_va(&kvm_vgic_global_state))->vcpu_base_va);
-	addr += fault_ipa - vgic->vgic_cpu_base;
-
-	if (kvm_vcpu_dabt_iswrite(vcpu)) {
-		u32 data = vcpu_data_guest_to_host(vcpu,
-						   vcpu_get_reg(vcpu, rd),
-						   sizeof(u32));
-		writel_relaxed(data, addr);
-	} else {
-		u32 data = readl_relaxed(addr);
-		vcpu_set_reg(vcpu, rd, vcpu_data_host_to_guest(vcpu, data,
-							       sizeof(u32)));
-	}
-
-	return 1;
-}
-#endif