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From: Mukesh Rathor <mukesh.rathor@oracle.com>
To: xen-devel@lists.xenproject.org
Subject: [V1 PATCH 3/3] pvh: disallow PHYSDEVOP_pirq_eoi_gmfn_v2/v1
Date: Mon, 24 Feb 2014 17:03:57 -0800	[thread overview]
Message-ID: <1393290237-28427-4-git-send-email-mukesh.rathor@oracle.com> (raw)
In-Reply-To: <1393290237-28427-3-git-send-email-mukesh.rathor@oracle.com>

A call to do_physdev_op with PHYSDEVOP_pirq_eoi_gmfn_v2/v1 will crash
xen later. Disallow that. Currently, such a path exists for linux
dom0 pvh.

Signed-off-by: Mukesh Rathor <mukesh.rathor@oracle.com>
---
 xen/arch/x86/physdev.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xen/arch/x86/physdev.c b/xen/arch/x86/physdev.c
index bc0634c..9f85857 100644
--- a/xen/arch/x86/physdev.c
+++ b/xen/arch/x86/physdev.c
@@ -339,6 +339,10 @@ ret_t do_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg)
         unsigned long mfn;
         struct page_info *page;
 
+        ret = -ENOSYS;
+        if ( is_pvh_vcpu(current) )
+            break;
+
         ret = -EFAULT;
         if ( copy_from_guest(&info, arg, 1) != 0 )
             break;
-- 
1.8.3.1

  reply	other threads:[~2014-02-25  1:06 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-25  1:03 [V1 PATCH 0/3] pvh: misc bug fixes Mukesh Rathor
2014-02-25  1:03 ` [V1 PATCH 1/3] pvh: early return from hvm_hap_nested_page_fault Mukesh Rathor
2014-02-25  1:03   ` [V1 PATCH 2/3] pvh: fix pirq path for pvh Mukesh Rathor
2014-02-25  1:03     ` Mukesh Rathor [this message]
     [not found]       ` <530C7362020000780011F0F0@nat28.tlf.novell.com>
     [not found]         ` <530C7663020000780011F104@nat28.tlf.novell.com>
     [not found]           ` <20140225152514.GA4322@konrad-lan.dumpdata.com>
     [not found]             ` <530CD069020000780011F3D1@nat28.tlf.novell.com>
     [not found]               ` <20140225123314.334b7fec@mantra.us.oracle.com>
     [not found]                 ` <530DC4A6020000780011F6C0@nat28.tlf.novell.com>
     [not found]                   ` <20140227190649.47d4eb7a@mantra.us.oracle.com>
     [not found]                     ` <5310524802000078001201B8@nat28.tlf.novell.com>
2014-03-03 12:30                       ` [V1 PATCH 3/3] pvh: disallow PHYSDEVOP_pirq_eoi_gmfn_v2/v1 George Dunlap
2014-03-04  7:44                         ` Jan Beulich
2014-02-25  9:28     ` [V1 PATCH 2/3] pvh: fix pirq path for pvh Jan Beulich
2014-02-25 20:44       ` Mukesh Rathor
2014-02-26  9:44         ` Jan Beulich
2014-02-25  9:26   ` [V1 PATCH 1/3] pvh: early return from hvm_hap_nested_page_fault Jan Beulich
2014-02-27 10:56   ` Tim Deegan
2014-02-28  2:25     ` Mukesh Rathor

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