As KVM/arm64 is looming on the horizon, it makes sense to move some
of the common code to a single location in order to reduce duplication.
The code could live anywhere. Actually, most of KVM is already built
with a bunch of ugly ../../.. hacks in the various Makefiles, so we're
not exactly talking about style here. But maybe it is time to start
moving into a less ugly direction.
The include files must be in a "public" location, as they are accessed
from non-KVM files (arch/arm/kernel/asm-offsets.c).
For this purpose, introduce two new locations:
- virt/kvm/arm/ : x86 and ia64 already share the ioapic code in
virt/kvm, so this could be seen as a (very ugly) precedent.
- include/kvm/ : there is already an include/xen, and while the
intent is slightly different, this seems as good a location as
any
Eventually, we should probably have independant Makefiles at every
levels (just like everywhere else in the kernel), but this is just
the first step.
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
---
arch/arm/include/asm/kvm_host.h | 4 ++--
arch/arm/kvm/Makefile | 7 ++++---
.../include/asm/kvm_arch_timer.h => include/kvm/arm_arch_timer.h | 0
arch/arm/include/asm/kvm_vgic.h => include/kvm/arm_vgic.h | 0
{arch/arm/kvm => virt/kvm/arm}/arch_timer.c | 4 ++--
{arch/arm/kvm => virt/kvm/arm}/vgic.c | 0
6 files changed, 8 insertions(+), 7 deletions(-)
rename arch/arm/include/asm/kvm_arch_timer.h => include/kvm/arm_arch_timer.h (100%)
rename arch/arm/include/asm/kvm_vgic.h => include/kvm/arm_vgic.h (100%)
rename {arch/arm/kvm => virt/kvm/arm}/arch_timer.c (99%)
rename {arch/arm/kvm => virt/kvm/arm}/vgic.c (100%)
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
index ff49193..1f3cee2 100644
--- a/arch/arm/include/asm/kvm_host.h
+++ b/arch/arm/include/asm/kvm_host.h
@@ -23,7 +23,7 @@
#include <asm/kvm_asm.h>
#include <asm/kvm_mmio.h>
#include <asm/fpstate.h>
-#include <asm/kvm_arch_timer.h>
+#include <kvm/arm_arch_timer.h>
#define KVM_MAX_VCPUS CONFIG_KVM_ARM_MAX_VCPUS
#define KVM_USER_MEM_SLOTS 32
@@ -38,7 +38,7 @@
#define KVM_NR_PAGE_SIZES 1
#define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
-#include <asm/kvm_vgic.h>
+#include <kvm/arm_vgic.h>
struct kvm_vcpu;
u32 *kvm_vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num, u32 mode);
diff --git a/arch/arm/kvm/Makefile b/arch/arm/kvm/Makefile
index 53c5ed8..9184a49 100644
--- a/arch/arm/kvm/Makefile
+++ b/arch/arm/kvm/Makefile
@@ -14,10 +14,11 @@ CFLAGS_mmu.o := -I.
AFLAGS_init.o := -Wa,-march=armv7-a$(plus_virt)
AFLAGS_interrupts.o := -Wa,-march=armv7-a$(plus_virt)
-kvm-arm-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o)
+KVM := ../../../virt/kvm
+kvm-arm-y = $(addprefix $(KVM)/, kvm_main.o coalesced_mmio.o)
obj-y += kvm-arm.o init.o interrupts.o
obj-y += arm.o handle_exit.o guest.o mmu.o emulate.o reset.o
obj-y += coproc.o coproc_a15.o mmio.o psci.o perf.o
-obj-$(CONFIG_KVM_ARM_VGIC) += vgic.o
-obj-$(CONFIG_KVM_ARM_TIMER) += arch_timer.o
+obj-$(CONFIG_KVM_ARM_VGIC) += $(KVM)/arm/vgic.o
+obj-$(CONFIG_KVM_ARM_TIMER) += $(KVM)/arm/arch_timer.o
diff --git a/arch/arm/include/asm/kvm_arch_timer.h b/include/kvm/arm_arch_timer.h
similarity index 100%
rename from arch/arm/include/asm/kvm_arch_timer.h
rename to include/kvm/arm_arch_timer.h
diff --git a/arch/arm/include/asm/kvm_vgic.h b/include/kvm/arm_vgic.h
similarity index 100%
rename from arch/arm/include/asm/kvm_vgic.h
rename to include/kvm/arm_vgic.h
diff --git a/arch/arm/kvm/arch_timer.c b/virt/kvm/arm/arch_timer.c
similarity index 99%
rename from arch/arm/kvm/arch_timer.c
rename to virt/kvm/arm/arch_timer.c
index c55b608..2d00b29 100644
--- a/arch/arm/kvm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -25,8 +25,8 @@
#include <clocksource/arm_arch_timer.h>
#include <asm/arch_timer.h>
-#include <asm/kvm_vgic.h>
-#include <asm/kvm_arch_timer.h>
+#include <kvm/arm_vgic.h>
+#include <kvm/arm_arch_timer.h>
static struct timecounter *timecounter;
static struct workqueue_struct *wqueue;
diff --git a/arch/arm/kvm/vgic.c b/virt/kvm/arm/vgic.c
similarity index 100%
rename from arch/arm/kvm/vgic.c
rename to virt/kvm/arm/vgic.c
--
1.8.2.3
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