[RFC PATCH 07/13] arm64: kvm: add SYS_DESC()

[Mark Rutland]

This patch adds a macro enabling us to initialise sys_reg_desc
structures based on common sysreg encoding definitions in
<asm/sysreg.h>. Subsequent patches will use this to simplify the KVM
code.

Signed-off-by: Mark Rutland <mark.rutland at arm.com>
Cc: Christoffer Dall <christoffer.dall at linaro.org>
Cc: Marc Zyngier <marc.zyngier at arm.com>
Cc: kvmarm at lists.cs.columbia.edu
---
 arch/arm64/kvm/sys_regs.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/kvm/sys_regs.h b/arch/arm64/kvm/sys_regs.h
index dbbb01c..aca681d 100644
--- a/arch/arm64/kvm/sys_regs.h
+++ b/arch/arm64/kvm/sys_regs.h
@@ -143,4 +143,9 @@ static inline int cmp_sys_reg(const struct sys_reg_desc *i1,
 #define CRm(_x) 	.CRm = _x
 #define Op2(_x) 	.Op2 = _x
 
+#define SYS_DESC(reg)					\
+	Op0(sys_reg_Op0(reg)), Op1(sys_reg_Op1(reg)),	\
+	CRn(sys_reg_CRn(reg)), CRm(sys_reg_CRm(reg)),	\
+	Op2(sys_reg_Op2(reg))
+
 #endif /* __ARM64_KVM_SYS_REGS_LOCAL_H__ */
-- 
1.9.1