linux-kernel - [PATCH WIP 4/5] xen: allow privcmd for hvm guests

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Message-ID: <1341400520-31770-4-git-send-email-stefano.stabellini@eu.citrix.com>
Date:	Wed, 4 Jul 2012 12:15:19 +0100
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	xen-devel@...ts.xensource.com
CC:	linux-kernel@...r.kernel.org, stefano.stabellini@...citrix.com,
	Ian.Campbell@...rix.com, david.vrabel@...rix.com
Subject: [PATCH WIP 4/5] xen: allow privcmd for hvm guests

Ian's initial XENMAPSPACE_gmfn_foreign implementation is enough to get
privcmd mmap to work for XENFEAT_auto_translated_physmap guests.

Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com>
---
 drivers/xen/xenfs/privcmd.c |    7 -------
 1 files changed, 0 insertions(+), 7 deletions(-)

diff --git a/drivers/xen/xenfs/privcmd.c b/drivers/xen/xenfs/privcmd.c
index c200b49..5c2b9e9 100644
--- a/drivers/xen/xenfs/privcmd.c
+++ b/drivers/xen/xenfs/privcmd.c
@@ -387,13 +387,6 @@ static int privcmd_mmap(struct file *file, struct vm_area_struct *vma)
 {
 	//printk(KERN_CRIT "privcmd_mmap\n");
 
-	/* Unsupported for auto-translate guests. */
-	if (xen_feature(XENFEAT_auto_translated_physmap))
-	{
-		printk(KERN_CRIT "privcmd_mmap -- no auto translated..\n");
-		return -ENOSYS;
-	}
-
 	/* DONTCOPY is essential for Xen because copy_page_range doesn't know
 	 * how to recreate these mappings */
 	vma->vm_flags |= VM_RESERVED | VM_IO | VM_DONTCOPY | VM_PFNMAP;
-- 
1.7.2.5

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