diff options
| author | Anthony PERARD <anthony.perard@citrix.com> | 2019-08-13 12:31:00 +0100 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2019-08-21 18:03:49 +0200 |
| commit | 68f4599dfc6ae841308e3fbce9121cbd311994f3 (patch) | |
| tree | 2ee07f83adc2b222d40476193b9620057e90c13a /OvmfPkg/Include/Library | |
| parent | 2a4a6242b71721024971df56d4f28e0aa63dd4d8 (diff) | |
| download | edk2-68f4599dfc6ae841308e3fbce9121cbd311994f3.tar.gz edk2-68f4599dfc6ae841308e3fbce9121cbd311994f3.tar.bz2 edk2-68f4599dfc6ae841308e3fbce9121cbd311994f3.zip | |
OvmfPkg/XenHypercallLib: Enable it in PEIM
Allow to use Xen hypercalls earlier, during the PEIM stage, but
XenHypercallLibInit() must be called once the XenInfo HOB is created
with the HyperPage setup.
Change the return value of XenHypercallLibInit so failure can be
detected when the call shouldn't fail, but still have the constructor
always succeed.
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1689
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20190813113119.14804-17-anthony.perard@citrix.com>
Diffstat (limited to 'OvmfPkg/Include/Library')
| -rw-r--r-- | OvmfPkg/Include/Library/XenHypercallLib.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/OvmfPkg/Include/Library/XenHypercallLib.h b/OvmfPkg/Include/Library/XenHypercallLib.h index c43822782b..c1491dd652 100644 --- a/OvmfPkg/Include/Library/XenHypercallLib.h +++ b/OvmfPkg/Include/Library/XenHypercallLib.h @@ -11,6 +11,18 @@ #define __XEN_HYPERCALL_LIB_H__
/**
+ To call when the gEfiXenInfoGuid HOB became available after the library init
+ function has already been executed.
+
+ This allow to make hypercall in the PEIM stage.
+**/
+RETURN_STATUS
+EFIAPI
+XenHypercallLibInit (
+ VOID
+ );
+
+/**
Check if the Xen Hypercall library is able to make calls to the Xen
hypervisor.
|