KVM: ia64: Implement a uniform vps interface

An uniform entry kvm_vps_entry is added for
vps_sync_write/read, vps_resume_handler/guest,
and branches to differnt PAL service according to the offset.

Singed-off-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 69 insertions, 0 deletions

diff --git a/arch/ia64/kvm/optvfault.S b/arch/ia64/kvm/optvfault.S
index e4f15d641b22..f0bf0a8efa3e 100644
--- a/arch/ia64/kvm/optvfault.S
+++ b/arch/ia64/kvm/optvfault.S
@@ -20,6 +20,75 @@
 #define ACCE_MOV_TO_PSR
 #define ACCE_THASH
 
+ENTRY(kvm_vps_entry)
+        adds r29 = VMM_VCPU_VSA_BASE_OFFSET,r21
+        ;;
+        ld8 r29 = [r29]
+        ;;
+        add r29 = r29, r30
+        ;;
+        mov b0 = r29
+        br.sptk.many b0
+END(kvm_vps_entry)
+
+/*
+ *      Inputs:
+ *      r24 : return address
+ *      r25 : vpd
+ *      r29 : scratch
+ *
+ */
+GLOBAL_ENTRY(kvm_vps_sync_read)
+        movl r30 = PAL_VPS_SYNC_READ
+        ;;
+        br.sptk.many kvm_vps_entry
+END(kvm_vps_sync_read)
+
+/*
+ *      Inputs:
+ *      r24 : return address
+ *      r25 : vpd
+ *      r29 : scratch
+ *
+ */
+GLOBAL_ENTRY(kvm_vps_sync_write)
+        movl r30 = PAL_VPS_SYNC_WRITE
+        ;;
+        br.sptk.many kvm_vps_entry
+END(kvm_vps_sync_write)
+
+/*
+ *      Inputs:
+ *      r23 : pr
+ *      r24 : guest b0
+ *      r25 : vpd
+ *
+ */
+GLOBAL_ENTRY(kvm_vps_resume_normal)
+        movl r30 = PAL_VPS_RESUME_NORMAL
+        ;;
+        mov pr=r23,-2
+        br.sptk.many kvm_vps_entry
+END(kvm_vps_resume_normal)
+
+/*
+ *      Inputs:
+ *      r23 : pr
+ *      r24 : guest b0
+ *      r25 : vpd
+ *      r17 : isr
+ */
+GLOBAL_ENTRY(kvm_vps_resume_handler)
+        movl r30 = PAL_VPS_RESUME_HANDLER
+        ;;
+        ld8 r27=[r25]
+        shr r17=r17,IA64_ISR_IR_BIT
+        ;;
+        dep r27=r17,r27,63,1   // bit 63 of r27 indicate whether enable CFLE
+        mov pr=r23,-2
+        br.sptk.many kvm_vps_entry
+END(kvm_vps_resume_handler)
+
 //mov r1=ar3
 GLOBAL_ENTRY(kvm_asm_mov_from_ar)
 #ifndef ACCE_MOV_FROM_AR