[Xen-devel] xc_evtchn_status fails with EFAULT on HVM, the same on PV works - Marek Marczykowski-Górecki - com.xensource.lists.xen-devel

18 messages in com.xensource.lists.xen-devel[Xen-devel] xc_evtchn_status fails wi...

From	Sent On	Attachments
Marek Marczykowski-Górecki	Jan 13, 2017 9:31 am
Andrew Cooper	Jan 13, 2017 9:38 am
Marek Marczykowski-Górecki	Jan 13, 2017 10:03 am
Andrew Cooper	Jan 13, 2017 10:15 am
Marek Marczykowski-Górecki	Jan 13, 2017 10:32 am
Andrew Cooper	Jan 13, 2017 10:37 am
Marek Marczykowski-Górecki	Jan 13, 2017 10:59 am
Andrew Cooper	Jan 13, 2017 11:27 am
Marek Marczykowski-Górecki	Jan 13, 2017 11:40 am
Andrew Cooper	Jan 13, 2017 11:54 am
Marek Marczykowski-Górecki	Jan 13, 2017 12:32 pm
Andrew Cooper	Jan 13, 2017 5:47 pm
Marek Marczykowski-Górecki	Jan 13, 2017 6:52 pm
Jan Beulich	Jan 16, 2017 4:17 am
Marek Marczykowski-Górecki	Jan 16, 2017 3:06 pm
Andrew Cooper	Jan 16, 2017 3:41 pm
Marek Marczykowski-Górecki	Jun 22, 2017 1:23 am
Andrew Cooper	Jun 22, 2017 1:27 am

Subject:	[Xen-devel] xc_evtchn_status fails with EFAULT on HVM, the same on PV works
From:	Marek Marczykowski-Górecki (marm...@invisiblethingslab.com)
Date:	Jan 13, 2017 9:31:30 am
List:	com.xensource.lists.xen-devel

Hi,

I have a strange problem - xc_evtchn_status fails when running in HVM, while exactly the same code (same kernel, same application etc) works fine in PV. I've narrowed it down to copy_from_guest call in common/event_channel.c, but no idea why it fails there. Xen version is 4.8.0. kernel is kernel-4.8.13-100.fc23. Any idea?

	Start a set with this search
	Include this search in one of my sets
	Exclude this search from one of my sets