Re: [PATCH v3 for-4.14] x86/monitor: revert default behavior when monitoring register write events

2020-06-03 Thread Tamas K Lengyel
On Wed, Jun 3, 2020 at 7:57 AM Roger Pau Monné wrote: > > On Wed, Jun 03, 2020 at 06:25:31AM -0600, Tamas K Lengyel wrote: > > On Wed, Jun 3, 2020 at 2:28 AM Roger Pau Monné wrote: > > > > > > On Tue, Jun 02, 2020 at 07:49:09AM -0600, Tamas K Lengyel wrote: > > > > diff --git a/xen/arch/x86/hvm/m

Re: [PATCH v3 for-4.14] x86/monitor: revert default behavior when monitoring register write events

2020-06-03 Thread Roger Pau Monné
On Wed, Jun 03, 2020 at 06:25:31AM -0600, Tamas K Lengyel wrote: > On Wed, Jun 3, 2020 at 2:28 AM Roger Pau Monné wrote: > > > > On Tue, Jun 02, 2020 at 07:49:09AM -0600, Tamas K Lengyel wrote: > > > diff --git a/xen/arch/x86/hvm/monitor.c b/xen/arch/x86/hvm/monitor.c > > > index 8aa14137e2..36894

Re: [PATCH v3 for-4.14] x86/monitor: revert default behavior when monitoring register write events

2020-06-03 Thread Tamas K Lengyel
On Wed, Jun 3, 2020 at 2:28 AM Roger Pau Monné wrote: > > On Tue, Jun 02, 2020 at 07:49:09AM -0600, Tamas K Lengyel wrote: > > For the last couple years we have received numerous reports from users of > > monitor vm_events of spurious guest crashes when using events. In > > particular, > > it has

Re: [PATCH v3 for-4.14] x86/monitor: revert default behavior when monitoring register write events

2020-06-03 Thread Roger Pau Monné
On Tue, Jun 02, 2020 at 07:49:09AM -0600, Tamas K Lengyel wrote: > For the last couple years we have received numerous reports from users of > monitor vm_events of spurious guest crashes when using events. In particular, > it has observed that the problem occurs when vm_events are being disabled. T

[PATCH v3 for-4.14] x86/monitor: revert default behavior when monitoring register write events

2020-06-02 Thread Tamas K Lengyel
For the last couple years we have received numerous reports from users of monitor vm_events of spurious guest crashes when using events. In particular, it has observed that the problem occurs when vm_events are being disabled. The nature of the guest crash varied widely and has only occured occasio