[PATCH v1 01/15] xen/riscv: introduce struct arch_vcpu

[Oleksii Kurochko]

Introduce structure with VCPU's registers which describes its state.

Signed-off-by: Oleksii Kurochko <oleksii.kuroc...@gmail.com>
---
 xen/arch/riscv/include/asm/domain.h | 58 ++++++++++++++++++++++++++++-
 1 file changed, 56 insertions(+), 2 deletions(-)

diff --git a/xen/arch/riscv/include/asm/domain.h 
b/xen/arch/riscv/include/asm/domain.h
index 316e7c6c8448..639cafdade99 100644
--- a/xen/arch/riscv/include/asm/domain.h
+++ b/xen/arch/riscv/include/asm/domain.h
@@ -22,9 +22,63 @@ struct hvm_domain
 struct arch_vcpu_io {
 };
 
-struct arch_vcpu {
+struct arch_vcpu
+{
     struct vcpu_vmid vmid;
-};
+
+    /* Xen's state: Callee-saved registers and tp, gp, ra */
+    struct
+    {
+        register_t s0;
+        register_t s1;
+        register_t s2;
+        register_t s3;
+        register_t s4;
+        register_t s5;
+        register_t s6;
+        register_t s7;
+        register_t s8;
+        register_t s9;
+        register_t s10;
+        register_t s11;
+
+        register_t sp;
+        register_t gp;
+
+        /* ra is used to jump to guest when creating new vcpu */
+        register_t ra;
+    } xen_saved_context;
+
+    /* CSRs */
+    register_t hstatus;
+    register_t hedeleg;
+    register_t hideleg;
+    register_t hvip;
+    register_t hip;
+    register_t hie;
+    register_t hgeie;
+    register_t henvcfg;
+    register_t hcounteren;
+    register_t htimedelta;
+    register_t htval;
+    register_t htinst;
+    register_t hstateen0;
+#ifdef CONFIG_RISCV_32
+    register_t henvcfgh;
+    register_t htimedeltah;
+#endif
+
+    /* VCSRs */
+    register_t vsstatus;
+    register_t vsip;
+    register_t vsie;
+    register_t vstvec;
+    register_t vsscratch;
+    register_t vscause;
+    register_t vstval;
+    register_t vsatp;
+    register_t vsepc;
+}  __cacheline_aligned;
 
 struct paging_domain {
     spinlock_t lock;
-- 
2.52.0