Re: [PATCH 01/11] mm: Introduce a function to check for virtualization protection features
From: "Kuppuswamy, Sathyanarayanan"
<sathyanarayanan.kuppuswamy@linux.intel.com>
Date: 2021-08-11 14:53:47
Also in:
amd-gfx, dri-devel, kexec, kvm, linux-efi, linux-fsdevel, linux-iommu, linux-s390, lkml, platform-driver-x86
On 7/27/21 3:26 PM, Tom Lendacky wrote:
quoted hunk ↗ jump to hunk
diff --git a/include/linux/protected_guest.h b/include/linux/protected_guest.h new file mode 100644 index 000000000000..f8ed7b72967b --- /dev/null +++ b/include/linux/protected_guest.h@@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Protected Guest (and Host) Capability checks + * + * Copyright (C) 2021 Advanced Micro Devices, Inc. + * + * Author: Tom Lendacky<thomas.lendacky@amd.com> + */ + +#ifndef _PROTECTED_GUEST_H +#define _PROTECTED_GUEST_H + +#ifndef __ASSEMBLY__
Can you include headers for bool type and false definition?
--- a/include/linux/protected_guest.h
+++ b/include/linux/protected_guest.h@@ -12,6 +12,9 @@ #ifndef __ASSEMBLY__ +#include <linux/types.h> +#include <linux/stddef.h>
Otherwise, I see following errors in multi-config auto testing. include/linux/protected_guest.h:40:15: error: unknown type name 'bool' include/linux/protected_guest.h:40:63: error: 'false' undeclared (first use in this functi
+
+#define PATTR_MEM_ENCRYPT 0 /* Encrypted memory */
+#define PATTR_HOST_MEM_ENCRYPT 1 /* Host encrypted memory */
+#define PATTR_GUEST_MEM_ENCRYPT 2 /* Guest encrypted memory */
+#define PATTR_GUEST_PROT_STATE 3 /* Guest encrypted state */
+
+#ifdef CONFIG_ARCH_HAS_PROTECTED_GUEST
+
+#include <asm/protected_guest.h>
+
+#else /* !CONFIG_ARCH_HAS_PROTECTED_GUEST */
+
+static inline bool prot_guest_has(unsigned int attr) { return false; }
+
+#endif /* CONFIG_ARCH_HAS_PROTECTED_GUEST */
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _PROTECTED_GUEST_H */-- Sathyanarayanan Kuppuswamy Linux Kernel Developer