[Xen-devel] [PATCH v5 20/35] OvmfPkg/XenPlatformPei: Introduce XenPvhDetected

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

XenPvhDetected() can be used to figure out if OVMF has started via the
Xen PVH entry point.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1689
Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Acked-by: Laszlo Ersek <lersek@xxxxxxxxxx>
---

Notes:
    v5:
    - in XenPvhDetected, check mXenInfo.HyperPages instead of .VersionMajor

 OvmfPkg/XenPlatformPei/Platform.h |  5 +++++
 OvmfPkg/XenPlatformPei/Xen.c      | 13 +++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/OvmfPkg/XenPlatformPei/Platform.h 
b/OvmfPkg/XenPlatformPei/Platform.h
index 4a80057bdc..db9a62572f 100644
--- a/OvmfPkg/XenPlatformPei/Platform.h
+++ b/OvmfPkg/XenPlatformPei/Platform.h
@@ -99,6 +99,11 @@ XenHvmloaderDetected (
   VOID
   );
 
+BOOLEAN
+XenPvhDetected (
+  VOID
+  );
+
 VOID
 AmdSevInitialize (
   VOID
diff --git a/OvmfPkg/XenPlatformPei/Xen.c b/OvmfPkg/XenPlatformPei/Xen.c
index 29b42b746c..f26f0e56dd 100644
--- a/OvmfPkg/XenPlatformPei/Xen.c
+++ b/OvmfPkg/XenPlatformPei/Xen.c
@@ -214,6 +214,19 @@ XenHvmloaderDetected (
   return (mXenHvmloaderInfo != NULL);
 }
 
+BOOLEAN
+XenPvhDetected (
+  VOID
+  )
+{
+  //
+  // This function should only be used after XenConnect
+  //
+  ASSERT (mXenInfo.HyperPages != NULL);
+
+  return mXenHvmloaderInfo == NULL;
+}
+
 VOID
 XenPublishRamRegions (
   VOID
-- 
Anthony PERARD

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