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authorChristoffer Dall <christoffer.dall@linaro.org>2017-10-05 00:25:24 +0300
committerMarc Zyngier <marc.zyngier@arm.com>2018-03-19 13:53:20 +0300
commit8a43a2b34b7dc59dc6df5fa0a3b8540918bc4c58 (patch)
tree5cbfa6fec8fed484436184ad0179b72159fc3bb6 /virt
parent75174ba6ca9dcfddda88aa420da4d7aa2b279fdf (diff)
downloadlinux-8a43a2b34b7dc59dc6df5fa0a3b8540918bc4c58.tar.xz
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>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/hyp/vgic-v2-sr.c80
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 0bbafdfd4adb..000000000000
--- 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