* [Xen-devel] [PATCH for-4.13] x86/shim: copy back the result of EVTCHNOP_status
@ 2019-10-31 11:58 Roger Pau Monne
2019-10-31 18:47 ` Wei Liu
2019-11-01 6:17 ` Jürgen Groß
0 siblings, 2 replies; 6+ messages in thread
From: Roger Pau Monne @ 2019-10-31 11:58 UTC (permalink / raw)
To: xen-devel
Cc: Juergen Gross, Andrew Cooper, Wei Liu, Jan Beulich, Roger Pau Monne
The event channel data was not copied back to guest memory, fix this
by doing the copy.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
---
Cc: Juergen Gross <jgross@suse.com>
---
xen/arch/x86/pv/shim.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/xen/arch/x86/pv/shim.c b/xen/arch/x86/pv/shim.c
index 4329eaaefe..35bf3945ac 100644
--- a/xen/arch/x86/pv/shim.c
+++ b/xen/arch/x86/pv/shim.c
@@ -514,6 +514,9 @@ static long pv_shim_event_channel_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg)
else
rc = xen_hypercall_event_channel_op(EVTCHNOP_status, &status);
+ if ( !rc && __copy_to_guest(arg, &status, 1) )
+ rc = -EFAULT;
+
break;
}
--
2.23.0
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^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [Xen-devel] [PATCH for-4.13] x86/shim: copy back the result of EVTCHNOP_status
2019-10-31 11:58 [Xen-devel] [PATCH for-4.13] x86/shim: copy back the result of EVTCHNOP_status Roger Pau Monne
@ 2019-10-31 18:47 ` Wei Liu
2019-11-01 6:17 ` Jürgen Groß
1 sibling, 0 replies; 6+ messages in thread
From: Wei Liu @ 2019-10-31 18:47 UTC (permalink / raw)
To: Roger Pau Monne
Cc: Juergen Gross, xen-devel, Wei Liu, Jan Beulich, Andrew Cooper
On Thu, Oct 31, 2019 at 12:58:29PM +0100, Roger Pau Monne wrote:
> The event channel data was not copied back to guest memory, fix this
> by doing the copy.
>
> Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Wei Liu <wl@xen.org>
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Xen-devel] [PATCH for-4.13] x86/shim: copy back the result of EVTCHNOP_status
2019-10-31 11:58 [Xen-devel] [PATCH for-4.13] x86/shim: copy back the result of EVTCHNOP_status Roger Pau Monne
2019-10-31 18:47 ` Wei Liu
@ 2019-11-01 6:17 ` Jürgen Groß
2019-11-08 11:55 ` Wei Liu
1 sibling, 1 reply; 6+ messages in thread
From: Jürgen Groß @ 2019-11-01 6:17 UTC (permalink / raw)
To: Roger Pau Monne, xen-devel; +Cc: Andrew Cooper, Wei Liu, Jan Beulich
On 31.10.19 12:58, Roger Pau Monne wrote:
> The event channel data was not copied back to guest memory, fix this
> by doing the copy.
>
> Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Release-acked-by: Juergen Gross <jgross@suse.com>
Juergen
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Xen-devel] [PATCH for-4.13] x86/shim: copy back the result of EVTCHNOP_status
2019-11-01 6:17 ` Jürgen Groß
@ 2019-11-08 11:55 ` Wei Liu
2019-11-08 12:07 ` Andrew Cooper
0 siblings, 1 reply; 6+ messages in thread
From: Wei Liu @ 2019-11-08 11:55 UTC (permalink / raw)
To: Jürgen Groß
Cc: xen-devel, Andrew Cooper, Wei Liu, Jan Beulich, Roger Pau Monne
On Fri, Nov 01, 2019 at 07:17:57AM +0100, Jürgen Groß wrote:
> On 31.10.19 12:58, Roger Pau Monne wrote:
> > The event channel data was not copied back to guest memory, fix this
> > by doing the copy.
> >
> > Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
>
> Release-acked-by: Juergen Gross <jgross@suse.com>
Jan? Andrew?
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Xen-devel] [PATCH for-4.13] x86/shim: copy back the result of EVTCHNOP_status
2019-11-08 11:55 ` Wei Liu
@ 2019-11-08 12:07 ` Andrew Cooper
2019-11-08 12:17 ` Wei Liu
0 siblings, 1 reply; 6+ messages in thread
From: Andrew Cooper @ 2019-11-08 12:07 UTC (permalink / raw)
To: Wei Liu, Jürgen Groß; +Cc: xen-devel, Jan Beulich, Roger Pau Monne
On 08/11/2019 11:55, Wei Liu wrote:
> On Fri, Nov 01, 2019 at 07:17:57AM +0100, Jürgen Groß wrote:
>> On 31.10.19 12:58, Roger Pau Monne wrote:
>>> The event channel data was not copied back to guest memory, fix this
>>> by doing the copy.
>>>
>>> Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
>> Release-acked-by: Juergen Gross <jgross@suse.com>
> Jan? Andrew?
Whats up? c/s 0f45bbbc40 not good enough?
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Xen-devel] [PATCH for-4.13] x86/shim: copy back the result of EVTCHNOP_status
2019-11-08 12:07 ` Andrew Cooper
@ 2019-11-08 12:17 ` Wei Liu
0 siblings, 0 replies; 6+ messages in thread
From: Wei Liu @ 2019-11-08 12:17 UTC (permalink / raw)
To: Andrew Cooper
Cc: Jürgen Groß, xen-devel, Jan Beulich, Wei Liu, Roger Pau Monne
On Fri, Nov 08, 2019 at 12:07:08PM +0000, Andrew Cooper wrote:
> On 08/11/2019 11:55, Wei Liu wrote:
> > On Fri, Nov 01, 2019 at 07:17:57AM +0100, Jürgen Groß wrote:
> >> On 31.10.19 12:58, Roger Pau Monne wrote:
> >>> The event channel data was not copied back to guest memory, fix this
> >>> by doing the copy.
> >>>
> >>> Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
> >> Release-acked-by: Juergen Gross <jgross@suse.com>
> > Jan? Andrew?
>
> Whats up? c/s 0f45bbbc40 not good enough?
Oh, I missed that. Sorry for the noise.
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^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2019-11-08 12:17 UTC | newest]
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2019-10-31 11:58 [Xen-devel] [PATCH for-4.13] x86/shim: copy back the result of EVTCHNOP_status Roger Pau Monne
2019-10-31 18:47 ` Wei Liu
2019-11-01 6:17 ` Jürgen Groß
2019-11-08 11:55 ` Wei Liu
2019-11-08 12:07 ` Andrew Cooper
2019-11-08 12:17 ` Wei Liu
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