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| author | Marc Zyngier <marc.zyngier@arm.com> | 2013-07-12 16:15:23 +0200 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2014-07-11 13:57:36 +0200 |
| commit | b2fb1c0d378399e1427a91bb991c094f2ca09a2f (patch) | |
| tree | 4e06317bc81281d27e80932f6c7ab0519bf5f1a6 /arch/arm64/kvm | |
| parent | arm64: KVM: move HCR_EL2.{IMO,FMO} manipulation into the vgic switch code (diff) | |
| download | linux-b2fb1c0d378399e1427a91bb991c094f2ca09a2f.tar.xz linux-b2fb1c0d378399e1427a91bb991c094f2ca09a2f.zip | |
KVM: ARM: vgic: add the GICv3 backend
Introduce the support code for emulating a GICv2 on top of GICv3
hardware.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/vgic-v3-switch.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm64/kvm/vgic-v3-switch.S b/arch/arm64/kvm/vgic-v3-switch.S new file mode 100644 index 000000000000..9fbf27350c84 --- /dev/null +++ b/arch/arm64/kvm/vgic-v3-switch.S @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2012,2013 - 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/linkage.h> +#include <linux/irqchip/arm-gic-v3.h> + + .text + .pushsection .hyp.text, "ax" + +ENTRY(__vgic_v3_get_ich_vtr_el2) + mrs x0, ICH_VTR_EL2 + ret +ENDPROC(__vgic_v3_get_ich_vtr_el2) + + .popsection |