[Xen-changelog] [linux-2.6.18-xen] privcmd: PowerPC guests can safely mmap() privcmd.

["Xen patchbot-linux-2.6.18-xen" <patchbot-linux-2.6.18-xen@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1181644929 -3600
# Node ID 33c3009e73ec91c091b93aebc2a2b0052a3da830
# Parent  93a955c2bebbf3be1a4b455d106762ac179ee845
privcmd: PowerPC guests can safely mmap() privcmd.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
 drivers/xen/privcmd/privcmd.c |    2 ++
 1 files changed, 2 insertions(+)

diff -r 93a955c2bebb -r 33c3009e73ec drivers/xen/privcmd/privcmd.c
--- a/drivers/xen/privcmd/privcmd.c     Tue Jun 12 11:36:58 2007 +0100
+++ b/drivers/xen/privcmd/privcmd.c     Tue Jun 12 11:42:09 2007 +0100
@@ -229,9 +229,11 @@ static struct vm_operations_struct privc
 
 static int privcmd_mmap(struct file * file, struct vm_area_struct * vma)
 {
+#ifndef __powerpc__ /* PowerPC has a trick to safely do this. */
        /* Unsupported for auto-translate guests. */
        if (xen_feature(XENFEAT_auto_translated_physmap))
                return -ENOSYS;
+#endif
 
        /* DONTCOPY is essential for Xen as copy_page_range is broken. */
        vma->vm_flags |= VM_RESERVED | VM_IO | VM_DONTCOPY;

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