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Diffstat (limited to 'pkg/ring0/lib_amd64.go')
-rw-r--r--pkg/ring0/lib_amd64.go7
1 files changed, 3 insertions, 4 deletions
diff --git a/pkg/ring0/lib_amd64.go b/pkg/ring0/lib_amd64.go
index 3e6bb9663..05c394ff5 100644
--- a/pkg/ring0/lib_amd64.go
+++ b/pkg/ring0/lib_amd64.go
@@ -12,6 +12,7 @@
// See the License for the specific language governing permissions and
// limitations under the License.
+//go:build amd64
// +build amd64
package ring0
@@ -43,8 +44,8 @@ func xsave(*byte)
// xsaveopt uses xsaveopt to save floating point state.
func xsaveopt(*byte)
-// WriteFS sets the GS address (set by init).
-var WriteFS func(addr uintptr)
+// writeFS sets the FS base address (selects one of wrfsbase or wrfsmsr).
+func writeFS(addr uintptr)
// wrfsbase writes to the GS base address.
func wrfsbase(addr uintptr)
@@ -116,10 +117,8 @@ func Init(featureSet *cpuid.FeatureSet) {
LoadFloatingPoint = fxrstor
}
if hasFSGSBASE {
- WriteFS = wrfsbase
WriteGS = wrgsbase
} else {
- WriteFS = wrfsmsr
WriteGS = wrgsmsr
}
}