Re: [PATCH 6/6] hyper-v: Handle hypercall code page as an overlay page

2021-06-08 Thread Siddharth Chandrasekaran
On Tue, Jun 08, 2021 at 11:02:45AM +0200, Alexander Graf wrote: > On 24.05.21 22:02, Siddharth Chandrasekaran wrote: > > Hypercall code page is specified in the Hyper-V TLFS to be an overlay > > page, ie., guest chooses a GPA and the host _places_ a page at that > > location, making it visible to t

Re: [PATCH 6/6] hyper-v: Handle hypercall code page as an overlay page

2021-06-08 Thread Alexander Graf
On 24.05.21 22:02, Siddharth Chandrasekaran wrote: Hypercall code page is specified in the Hyper-V TLFS to be an overlay page, ie., guest chooses a GPA and the host _places_ a page at that location, making it visible to the guest and the existing page becomes inaccessible. Similarly when disabl

[PATCH 6/6] hyper-v: Handle hypercall code page as an overlay page

2021-05-24 Thread Siddharth Chandrasekaran
Hypercall code page is specified in the Hyper-V TLFS to be an overlay page, ie., guest chooses a GPA and the host _places_ a page at that location, making it visible to the guest and the existing page becomes inaccessible. Similarly when disabled, the host should _remove_ the overlay and the old pa