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
next prev parent 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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