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KVM: arm64: Duplicate hyp/timer-sr.c for VHE/nVHE

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timer-sr.c contains a HVC handler for setting CNTVOFF_EL2 and two helper
functions for controlling access to physical counter. The former is used by
both VHE/nVHE and is duplicated, the latter are used only by nVHE and moved
to nvhe/timer-sr.c.

Signed-off-by: David Brazdil <dbrazdil@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200625131420.71444-13-dbrazdil@google.com
This commit is contained in:
David Brazdil 2020-06-25 14:14:17 +01:00 committed by Marc Zyngier
parent 13aeb9b400
commit 9aebdea494
7 changed files with 19 additions and 9 deletions
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2
arch/arm64/include/asm/kvm_hyp.h
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@ -63,8 +63,10 @@ void __vgic_v3_save_aprs(struct vgic_v3_cpu_if *cpu_if);
void __vgic_v3_restore_aprs(struct vgic_v3_cpu_if *cpu_if);
int __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu);
#ifdef __KVM_NVHE_HYPERVISOR__
void __timer_enable_traps(struct kvm_vcpu *vcpu);
void __timer_disable_traps(struct kvm_vcpu *vcpu);
#endif
#ifdef __KVM_NVHE_HYPERVISOR__
void __sysreg_save_state_nvhe(struct kvm_cpu_context *ctxt);

5
arch/arm64/kernel/image-vars.h
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@ -76,11 +76,6 @@ KVM_NVHE_ALIAS(abort_guest_exit_start);
KVM_NVHE_ALIAS(__fpsimd_restore_state);
KVM_NVHE_ALIAS(__fpsimd_save_state);
/* Symbols defined in timer-sr.c (not yet compiled with nVHE build rules). */
KVM_NVHE_ALIAS(__kvm_timer_set_cntvoff);
KVM_NVHE_ALIAS(__timer_disable_traps);
KVM_NVHE_ALIAS(__timer_enable_traps);
/* Symbols defined in vgic-v2-cpuif-proxy.c (not yet compiled with nVHE build rules). */
KVM_NVHE_ALIAS(__vgic_v2_perform_cpuif_access);

2
arch/arm64/kvm/hyp/Makefile
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@ -13,7 +13,7 @@ subdir-ccflags-y := -I$(incdir) \
obj-$(CONFIG_KVM) += hyp.o vhe/ nvhe/
obj-$(CONFIG_KVM_INDIRECT_VECTORS) += smccc_wa.o
hyp-y := vgic-v3-sr.o timer-sr.o aarch32.o vgic-v2-cpuif-proxy.o entry.o \
hyp-y := vgic-v3-sr.o aarch32.o vgic-v2-cpuif-proxy.o entry.o \
fpsimd.o
# KVM code is run at a different exception code with a different map, so

3
arch/arm64/kvm/hyp/nvhe/Makefile
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@ -6,7 +6,8 @@
asflags-y := -D__KVM_NVHE_HYPERVISOR__
ccflags-y := -D__KVM_NVHE_HYPERVISOR__
obj-y := sysreg-sr.o debug-sr.o switch.o tlb.o hyp-init.o ../hyp-entry.o
obj-y := timer-sr.o sysreg-sr.o debug-sr.o switch.o tlb.o hyp-init.o \
../hyp-entry.o
obj-y := $(patsubst %.o,%.hyp.o,$(obj-y))
extra-y := $(patsubst %.hyp.o,%.hyp.tmp.o,$(obj-y))

2
arch/arm64/kvm/hyp/timer-sr.c → arch/arm64/kvm/hyp/nvhe/timer-sr.c
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@ -10,7 +10,7 @@
#include <asm/kvm_hyp.h>
void __hyp_text __kvm_timer_set_cntvoff(u64 cntvoff)
void __kvm_timer_set_cntvoff(u64 cntvoff)
{
write_sysreg(cntvoff, cntvoff_el2);
}

2
arch/arm64/kvm/hyp/vhe/Makefile
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@ -6,7 +6,7 @@
asflags-y := -D__KVM_VHE_HYPERVISOR__
ccflags-y := -D__KVM_VHE_HYPERVISOR__
obj-y := sysreg-sr.o debug-sr.o switch.o tlb.o ../hyp-entry.o
obj-y := timer-sr.o sysreg-sr.o debug-sr.o switch.o tlb.o ../hyp-entry.o
# KVM code is run at a different exception code with a different map, so
# compiler instrumentation that inserts callbacks or checks into the code may

12
arch/arm64/kvm/hyp/vhe/timer-sr.c Normal file
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@ -0,0 +1,12 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2012-2015 - ARM Ltd
* Author: Marc Zyngier <marc.zyngier@arm.com>
*/
#include <asm/kvm_hyp.h>
void __kvm_timer_set_cntvoff(u64 cntvoff)
{
write_sysreg(cntvoff, cntvoff_el2);
}