KVM: ppc: PowerPC 440 KVM implementation

This functionality is definitely experimental, but is capable of running
unmodified PowerPC 440 Linux kernels as guests on a PowerPC 440 host. (Only
tested with 440EP "Bamboo" guests so far, but with appropriate userspace
support other SoC/board combinations should work.)

See Documentation/powerpc/kvm_440.txt for technical details.

[stephen: build fix]

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index adf1d09d726f..62134845af08 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -23,6 +23,9 @@
 #include <linux/mm.h>
 #include <linux/suspend.h>
 #include <linux/hrtimer.h>
+#ifdef CONFIG_KVM
+#include <linux/kvm_host.h>
+#endif
 #ifdef CONFIG_PPC64
 #include <linux/time.h>
 #include <linux/hardirq.h>
@@ -324,5 +327,30 @@ int main(void)
 
         DEFINE(PGD_TABLE_SIZE, PGD_TABLE_SIZE);
 
+#ifdef CONFIG_KVM
+        DEFINE(TLBE_BYTES, sizeof(struct tlbe));
+
+        DEFINE(VCPU_HOST_STACK, offsetof(struct kvm_vcpu, arch.host_stack));
+        DEFINE(VCPU_HOST_PID, offsetof(struct kvm_vcpu, arch.host_pid));
+        DEFINE(VCPU_HOST_TLB, offsetof(struct kvm_vcpu, arch.host_tlb));
+        DEFINE(VCPU_SHADOW_TLB, offsetof(struct kvm_vcpu, arch.shadow_tlb));
+        DEFINE(VCPU_GPRS, offsetof(struct kvm_vcpu, arch.gpr));
+        DEFINE(VCPU_LR, offsetof(struct kvm_vcpu, arch.lr));
+        DEFINE(VCPU_CR, offsetof(struct kvm_vcpu, arch.cr));
+        DEFINE(VCPU_XER, offsetof(struct kvm_vcpu, arch.xer));
+        DEFINE(VCPU_CTR, offsetof(struct kvm_vcpu, arch.ctr));
+        DEFINE(VCPU_PC, offsetof(struct kvm_vcpu, arch.pc));
+        DEFINE(VCPU_MSR, offsetof(struct kvm_vcpu, arch.msr));
+        DEFINE(VCPU_SPRG4, offsetof(struct kvm_vcpu, arch.sprg4));
+        DEFINE(VCPU_SPRG5, offsetof(struct kvm_vcpu, arch.sprg5));
+        DEFINE(VCPU_SPRG6, offsetof(struct kvm_vcpu, arch.sprg6));
+        DEFINE(VCPU_SPRG7, offsetof(struct kvm_vcpu, arch.sprg7));
+        DEFINE(VCPU_PID, offsetof(struct kvm_vcpu, arch.pid));
+
+        DEFINE(VCPU_LAST_INST, offsetof(struct kvm_vcpu, arch.last_inst));
+        DEFINE(VCPU_FAULT_DEAR, offsetof(struct kvm_vcpu, arch.fault_dear));
+        DEFINE(VCPU_FAULT_ESR, offsetof(struct kvm_vcpu, arch.fault_esr));
+#endif
+
         return 0;
 }