[Xen-ia64-devel] [PATCH] revert cset 11039

[Kouya SHIMURA <kouya@xxxxxxxxxxxxxx>]

Hi,

I'm grad that xencomm is applied.
Attached patch reverts cset 11039. 
That is no longer necessary.

Thanks,
Kouya

Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>

diff -r 6e7cc23ab18c xen/arch/ia64/xen/vcpu.c
--- a/xen/arch/ia64/xen/vcpu.c  Mon Oct 02 21:53:07 2006 -0600
+++ b/xen/arch/ia64/xen/vcpu.c  Tue Oct 03 18:24:23 2006 +0900
@@ -2226,28 +2226,3 @@ IA64FAULT vcpu_ptr_i(VCPU *vcpu,UINT64 v
 
        return IA64_NO_FAULT;
 }
-
-int ia64_map_hypercall_param(void)
-{
-       struct vcpu *v = current;
-       struct domain *d = current->domain;
-       u64 vaddr = v->arch.hypercall_param.va & PAGE_MASK;
-       volatile pte_t* pte;
-
-       if (v->arch.hypercall_param.va == 0)
-               return FALSE;
-       pte = lookup_noalloc_domain_pte(d, v->arch.hypercall_param.pa1);
-       if (!pte || !pte_present(*pte))
-               return FALSE;
-       vcpu_itc_no_srlz(v, 2, vaddr, pte_val(*pte), -1UL, PAGE_SHIFT);
-       if (v->arch.hypercall_param.pa2) {
-               vaddr += PAGE_SIZE;
-               pte = lookup_noalloc_domain_pte(d, v->arch.hypercall_param.pa2);
-               if (pte && pte_present(*pte)) {
-                       vcpu_itc_no_srlz(v, 2, vaddr, pte_val(*pte),
-                                        -1UL, PAGE_SHIFT);
-               }
-       }
-       ia64_srlz_d();
-       return TRUE;
-}
diff -r 6e7cc23ab18c xen/include/asm-ia64/domain.h
--- a/xen/include/asm-ia64/domain.h     Mon Oct 02 21:53:07 2006 -0600
+++ b/xen/include/asm-ia64/domain.h     Tue Oct 03 18:24:23 2006 +0900
@@ -142,12 +142,6 @@ struct arch_domain {
     (sizeof(vcpu_info_t) * (v)->vcpu_id + \
     offsetof(vcpu_info_t, evtchn_upcall_mask))
 
-struct hypercall_param {
-    unsigned long va;
-    unsigned long pa1;
-    unsigned long pa2;
-};
-
 struct arch_vcpu {
     /* Save the state of vcpu.
        This is the first entry to speed up accesses.  */
@@ -192,8 +186,6 @@ struct arch_vcpu {
     char irq_new_condition;    // vpsr.i/vtpr change, check for pending VHPI
     char hypercall_continuation;
 
-    struct hypercall_param hypercall_param;  // used to remap a hypercall param
-
     //for phycial  emulation
     unsigned long old_rsc;
     int mode_flags;
diff -r 6e7cc23ab18c xen/include/asm-ia64/uaccess.h
--- a/xen/include/asm-ia64/uaccess.h    Mon Oct 02 21:53:07 2006 -0600
+++ b/xen/include/asm-ia64/uaccess.h    Tue Oct 03 18:24:23 2006 +0900
@@ -211,30 +211,16 @@ extern unsigned long __must_check __copy
 extern unsigned long __must_check __copy_user (void __user *to, const void 
__user *from,
                                               unsigned long count);
 
-extern int ia64_map_hypercall_param(void);
-
 static inline unsigned long
 __copy_to_user (void __user *to, const void *from, unsigned long count)
 {
-       unsigned long len;
-       len = __copy_user(to, (void __user *)from, count);
-       if (len == 0)
-               return 0;
-       if (ia64_map_hypercall_param())
-               len = __copy_user(to, (void __user *)from, count); /* retry */
-       return len;
+       return __copy_user(to, (void __user *)from, count);
 }
 
 static inline unsigned long
 __copy_from_user (void *to, const void __user *from, unsigned long count)
 {
-       unsigned long len;
-       len = __copy_user((void __user *)to, from, count);
-       if (len == 0)
-               return 0;
-       if (ia64_map_hypercall_param())
-               len = __copy_user((void __user *) to, from, count); /* retry */
-       return len;
+       return __copy_user((void __user *)to, from, count);
 }
 
 #define __copy_to_user_inatomic                __copy_to_user

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