Re: [PATCH v10 10/19] KVM: xen: (re-)initialize shared_info if guest (32/64-bit) mode is set

On Mon, 2023-12-04 at 14:43 +0000, Paul Durrant wrote:

From: Paul Durrant pdurrant@amazon.com

If the shared_info PFN cache has already been initialized then the content of the shared_info page needs to be (re-)initialized whenever the guest mode is (re)set. Setting the guest mode is either done explicitly by the VMM via the KVM_XEN_ATTR_TYPE_LONG_MODE attribute, or implicitly when the guest writes the MSR to set up the hypercall page.

Signed-off-by: Paul Durrant pdurrant@amazon.com

Reviewed-by: David Woodhouse dwmw@amazon.co.uk