Re: [PATCH v7 8/9] i386: Hyper-V SynIC requires POST_MESSAGES/SIGNAL_EVENTS priviliges

2021-06-07 Thread Eduardo Habkost
On Fri, Jun 04, 2021 at 09:35:27AM +0200, Vitaly Kuznetsov wrote: > Eduardo Habkost writes: > > > On Thu, Jun 03, 2021 at 01:48:34PM +0200, Vitaly Kuznetsov wrote: > >> When Hyper-V SynIC is enabled, we may need to allow Windows guests to make > >> hypercalls (POST_MESSAGES/SIGNAL_EVENTS). No iss

Re: [PATCH v7 8/9] i386: Hyper-V SynIC requires POST_MESSAGES/SIGNAL_EVENTS priviliges

2021-06-04 Thread Eric Blake
On Thu, Jun 03, 2021 at 01:48:34PM +0200, Vitaly Kuznetsov wrote: In the subject, s/priviliges/privileges/ > When Hyper-V SynIC is enabled, we may need to allow Windows guests to make > hypercalls (POST_MESSAGES/SIGNAL_EVENTS). No issue is currently observed > because KVM is very permissive, allo

Re: [PATCH v7 8/9] i386: Hyper-V SynIC requires POST_MESSAGES/SIGNAL_EVENTS priviliges

2021-06-04 Thread Vitaly Kuznetsov
Eduardo Habkost writes: > On Thu, Jun 03, 2021 at 01:48:34PM +0200, Vitaly Kuznetsov wrote: >> When Hyper-V SynIC is enabled, we may need to allow Windows guests to make >> hypercalls (POST_MESSAGES/SIGNAL_EVENTS). No issue is currently observed >> because KVM is very permissive, allowing these h

Re: [PATCH v7 8/9] i386: Hyper-V SynIC requires POST_MESSAGES/SIGNAL_EVENTS priviliges

2021-06-03 Thread Eduardo Habkost
On Thu, Jun 03, 2021 at 01:48:34PM +0200, Vitaly Kuznetsov wrote: > When Hyper-V SynIC is enabled, we may need to allow Windows guests to make > hypercalls (POST_MESSAGES/SIGNAL_EVENTS). No issue is currently observed > because KVM is very permissive, allowing these hypercalls regarding of > guest

[PATCH v7 8/9] i386: Hyper-V SynIC requires POST_MESSAGES/SIGNAL_EVENTS priviliges

2021-06-03 Thread Vitaly Kuznetsov
When Hyper-V SynIC is enabled, we may need to allow Windows guests to make hypercalls (POST_MESSAGES/SIGNAL_EVENTS). No issue is currently observed because KVM is very permissive, allowing these hypercalls regarding of guest visible CPUid bits. Signed-off-by: Vitaly Kuznetsov --- target/i386/kvm