File valgrind.xen-4.1-fix-XEN_DOMCTL_mem_event_op.patch of Package valgrind

From: Olaf Hering <olaf@aepfle.de>
Date: Wed, 26 Feb 2020 17:37:56 +0100
Subject: xen-4.1: fix XEN_DOMCTL_mem_event_op

In Xen 4.1 XEN_DOMCTL_mem_event_op had a different layout.
Fix the existing code to handle it correctly.

bz#390553
---
 coregrind/m_syswrap/syswrap-xen.c | 7 +++++++
 include/vki/vki-xen-domctl.h      | 9 +++++++++
 2 files changed, 16 insertions(+)

--- a/coregrind/m_syswrap/syswrap-xen.c
+++ b/coregrind/m_syswrap/syswrap-xen.c
@@ -1417,24 +1417,30 @@ PRE(domctl)
    case VKI_XEN_DOMCTL_cacheflush:
       PRE_XEN_DOMCTL_READ(cacheflush, start_pfn);
       PRE_XEN_DOMCTL_READ(cacheflush, nr_pfns);
       break;
 
    case VKI_XEN_DOMCTL_set_access_required:
       PRE_XEN_DOMCTL_READ(access_required, access_required);
       break;
 
    case VKI_XEN_DOMCTL_mem_event_op | VKI_XEN_DOMCTL_vm_event_op:
       switch (domctl->interface_version) {
       case 0x00000007:
+         __PRE_XEN_DOMCTL_READ(mem_event_op, mem_event_op_00000007, op);
+         __PRE_XEN_DOMCTL_READ(mem_event_op, mem_event_op_00000007, mode);
+         __PRE_XEN_DOMCTL_READ(mem_event_op, mem_event_op_00000007, shared_addr);
+         __PRE_XEN_DOMCTL_READ(mem_event_op, mem_event_op_00000007, ring_addr);
+         __PRE_XEN_DOMCTL_READ(mem_event_op, mem_event_op_00000007, gfn);
+         break;
       case 0x00000008:
       case 0x00000009:
       case 0x0000000a:
       case 0x0000000b:
       case 0x0000000c:
       case 0x0000000d:
       case 0x0000000e:
       case 0x0000000f:
       case 0x00000010:
       case 0x00000011:
          __PRE_XEN_DOMCTL_READ(mem_event_op, vm_event_op_00000008, op);
          __PRE_XEN_DOMCTL_READ(mem_event_op, vm_event_op_00000008, mode);
@@ -2447,24 +2453,25 @@ POST(domctl){
        }
        break;
    case VKI_XEN_DOMCTL_get_vcpu_msrs:
       if (domctl->u.vcpu_msrs.msrs.p)
          POST_MEM_WRITE((Addr)domctl->u.vcpu_msrs.msrs.p,
                         sizeof(vki_xen_domctl_vcpu_msr_t) *
                         domctl->u.vcpu_msrs.msr_count);
       break;
 
    case VKI_XEN_DOMCTL_mem_event_op | VKI_XEN_DOMCTL_vm_event_op:
       switch (domctl->interface_version) {
       case 0x00000007:
+         break;
       case 0x00000008:
       case 0x00000009:
       case 0x0000000a:
       case 0x0000000b:
       case 0x0000000c:
       case 0x0000000d:
       case 0x0000000e:
       case 0x0000000f:
       case 0x00000010:
       case 0x00000011:
          __POST_XEN_DOMCTL_WRITE(mem_event_op, vm_event_op_00000008, port);
          break;
--- a/include/vki/vki-xen-domctl.h
+++ b/include/vki/vki-xen-domctl.h
@@ -497,24 +497,32 @@ struct vki_xen_domctl_assign_device_0000000b {
     } u;
     /* IN */
 //#define XEN_DOMCTL_DEV_RDM_RELAXED      1
     vki_uint32_t  flag;   /* flag of assigned device */
 };
 
 struct vki_xen_domctl_debug_op {
     vki_uint32_t op;   /* IN */
     vki_uint32_t vcpu; /* IN */
 };
 typedef struct vki_xen_domctl_debug_op vki_xen_domctl_debug_op_t;
 
+struct vki_xen_domctl_mem_event_op_00000007 {
+    vki_uint32_t op; /* IN */
+    vki_uint32_t mode; /* IN */
+    __vki_aligned_u64 shared_addr; /* IN */
+    __vki_aligned_u64 ring_addr; /* IN */
+    __vki_aligned_u64 gfn; /* IN */
+};
+
 struct vki_xen_domctl_vm_event_op_00000008 {
     vki_uint32_t op; /* IN */
     vki_uint32_t mode; /* IN */
     vki_uint32_t port; /* OUT */
 };
 
 struct vki_xen_domctl_vm_event_op_00000012 {
     vki_uint32_t op; /* IN */
     vki_uint32_t mode; /* IN */
 
     union {
         struct {
@@ -700,24 +708,25 @@ struct vki_xen_domctl {
         //struct vki_xen_domctl_get_device_group  get_device_group;
         struct vki_xen_domctl_assign_device_00000007 assign_device_00000007;
         struct vki_xen_domctl_assign_device_0000000b assign_device_0000000b;
         //struct vki_xen_domctl_bind_pt_irq       bind_pt_irq;
         //struct vki_xen_domctl_memory_mapping    memory_mapping;
         //struct vki_xen_domctl_ioport_mapping    ioport_mapping;
         struct vki_xen_domctl_pin_mem_cacheattr pin_mem_cacheattr;
         struct vki_xen_domctl_ext_vcpucontext_00000008 ext_vcpucontext_00000008;
         struct vki_xen_domctl_ext_vcpucontext_00000009 ext_vcpucontext_00000009;
         //struct vki_xen_domctl_set_target        set_target;
         //struct vki_xen_domctl_subscribe         subscribe;
         struct vki_xen_domctl_debug_op          debug_op;
+        struct vki_xen_domctl_mem_event_op_00000007 mem_event_op_00000007;
         struct vki_xen_domctl_vm_event_op_00000008 vm_event_op_00000008;
         struct vki_xen_domctl_vm_event_op_00000012 vm_event_op_00000012;
         //struct vki_xen_domctl_mem_sharing_op    mem_sharing_op;
 #if defined(__i386__) || defined(__x86_64__)
         struct vki_xen_domctl_cpuid             cpuid;
         struct vki_xen_domctl_vcpuextstate      vcpuextstate;
         struct vki_xen_domctl_vcpu_msrs         vcpu_msrs;
 #endif
         struct vki_xen_domctl_set_access_required access_required;
         //struct vki_xen_domctl_audit_p2m         audit_p2m;
         //struct vki_xen_domctl_set_virq_handler  set_virq_handler;
         struct vki_xen_domctl_set_max_evtchn    set_max_evtchn;