KVM: ARM: VFP userspace interface

We use space #18 for floating point regs.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/arch/arm/include/uapi/asm/kvm.h b/arch/arm/include/uapi/asm/kvm.h
index 71ae27ec0599..bbb6b2328004 100644
--- a/arch/arm/include/uapi/asm/kvm.h
+++ b/arch/arm/include/uapi/asm/kvm.h
@@ -112,6 +112,18 @@ struct kvm_arch_memory_slot {
 #define KVM_REG_ARM_DEMUX_VAL_MASK      0x00000000000000FF
 #define KVM_REG_ARM_DEMUX_VAL_SHIFT     0
 
+/* VFP registers: we could overload CP10 like ARM does, but that's ugly. */
+#define KVM_REG_ARM_VFP                 (0x0012 << KVM_REG_ARM_COPROC_SHIFT)
+#define KVM_REG_ARM_VFP_MASK            0x000000000000FFFF
+#define KVM_REG_ARM_VFP_BASE_REG        0x0
+#define KVM_REG_ARM_VFP_FPSID           0x1000
+#define KVM_REG_ARM_VFP_FPSCR           0x1001
+#define KVM_REG_ARM_VFP_MVFR1           0x1006
+#define KVM_REG_ARM_VFP_MVFR0           0x1007
+#define KVM_REG_ARM_VFP_FPEXC           0x1008
+#define KVM_REG_ARM_VFP_FPINST          0x1009
+#define KVM_REG_ARM_VFP_FPINST2         0x100A
+
 
 /* KVM_IRQ_LINE irq field index values */
 #define KVM_ARM_IRQ_TYPE_SHIFT          24