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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/