Re: [Xen-devel] Removing the PVH assert in arch/x86/hvm/io.c:87

2014-12-05 Thread Jan Beulich
On 04.12.14 at 17:35, roger@citrix.com wrote: I've just stumbled upon this assert while testing PVH on different hardware. It was added in 7c4870 as a safe belt, but it turns out INS and OUTS go through handle_mmio. So using this instructions from a PVH guest basically kills Xen. I've

Re: [Xen-devel] Removing the PVH assert in arch/x86/hvm/io.c:87

2014-12-05 Thread Roger Pau Monné
El 05/12/14 a les 10.15, Jan Beulich ha escrit: On 04.12.14 at 17:35, roger@citrix.com wrote: I've just stumbled upon this assert while testing PVH on different hardware. It was added in 7c4870 as a safe belt, but it turns out INS and OUTS go through handle_mmio. So using this instructions

Re: [Xen-devel] Removing the PVH assert in arch/x86/hvm/io.c:87

2014-12-05 Thread David Vrabel
On 05/12/14 11:07, Roger Pau Monné wrote: El 05/12/14 a les 10.15, Jan Beulich ha escrit: On 04.12.14 at 17:35, roger@citrix.com wrote: I've just stumbled upon this assert while testing PVH on different hardware. It was added in 7c4870 as a safe belt, but it turns out INS and OUTS go

Re: [Xen-devel] Removing the PVH assert in arch/x86/hvm/io.c:87

2014-12-05 Thread Jan Beulich
On 05.12.14 at 12:07, roger@citrix.com wrote: El 05/12/14 a les 10.15, Jan Beulich ha escrit: On 04.12.14 at 17:35, roger@citrix.com wrote: I've just stumbled upon this assert while testing PVH on different hardware. It was added in 7c4870 as a safe belt, but it turns out INS and

Re: [Xen-devel] Removing the PVH assert in arch/x86/hvm/io.c:87

2014-12-04 Thread Mukesh Rathor
On Thu, 4 Dec 2014 17:35:59 +0100 Roger Pau Monné roger@citrix.com wrote: Hello, I've just stumbled upon this assert while testing PVH on different hardware. It was added in 7c4870 as a safe belt, but it turns out INS and OUTS go through handle_mmio. So using this instructions from a