REVERTME: pkvm: x86: Temporarily fail pkvm initialization

Until pVMCS is ready, temporarily fail pKVM initialization so that the
reprivilege code gets more test coverage.

Signed-off-by: Vineeth Pillai (Google) <[email protected]>

Author: Vineeth Pillai (Google)

arch/x86/kvm/pkvm/init.c

@@ -9,6 +9,7 @@
 #include "mmu.h"
 #include "pkvm.h"
 #include "trace.h"
+#include "debug.h"
 
 static void *hyp_pgt_base;
 static void *host_pgt_base;
@@ -282,6 +283,15 @@ int pkvm_init(struct pkvm_mem_info infos[], int nr_infos)
 	if (ret)
 		return ret;
 
+	/*
+	 * XXX: Revert
+	 * Temporrarily fail pkvm initialization until pVMCS is fully merged.
+	 * pKVM doesn't serve any real purpose until we have pVMCS reasy and
+	 * this failure helps us test reprivilege code when pKVM is enabled.
+	 */
+	pkvm_err("%s: Explicitly triggering pkvm initialization failure!\n", __func__);
+	return -EFAULT;
+
 	pkvm_init_percpu_fpu();
 
 	pkvm_vcpu_perf_init(this_cpu_read(host_vcpu));