Ovmf/Xen: move XenBusDxe hypercall code to separate library

This moves all of the Xen hypercall code that was private to XenBusDxe
to a new library class XenHypercallLib. This will allow us to reimplement
it for ARM, and to export the Xen hypercall functionality to other parts
of the code, such as a Xen console SerialPortLib driver.

Contributed-under: TianoCore Contribution Agreement 1.0
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16970 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 1 insertions, 8 deletions

diff --git a/OvmfPkg/XenBusDxe/XenBusDxe.c b/OvmfPkg/XenBusDxe/XenBusDxe.c
index d333b331b6..cc334c086c 100644
--- a/OvmfPkg/XenBusDxe/XenBusDxe.c
+++ b/OvmfPkg/XenBusDxe/XenBusDxe.c
@@ -26,10 +26,10 @@
 #include <IndustryStandard/Pci.h>

 #include <IndustryStandard/Acpi.h>

 #include <Library/DebugLib.h>

+#include <Library/XenHypercallLib.h>

 

 #include "XenBusDxe.h"

 

-#include "XenHypercall.h"

 #include "GrantTable.h"

 #include "XenStore.h"

 #include "XenBus.h"

@@ -390,13 +390,6 @@ XenBusDxeDriverBindingStart (
   MmioAddr = BarDesc->AddrRangeMin;

   FreePool (BarDesc);

 

-  Status = XenHyperpageInit ();

-  if (EFI_ERROR (Status)) {

-    DEBUG ((EFI_D_ERROR, "XenBus: Unable to retrieve the hyperpage.\n"));

-    Status = EFI_UNSUPPORTED;

-    goto ErrorAllocated;

-  }

-

   Status = XenGetSharedInfoPage (Dev);

   if (EFI_ERROR (Status)) {

     DEBUG ((EFI_D_ERROR, "XenBus: Unable to get the shared info page.\n"));