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Subject[PATCH v3 02/11] kvm: arm64: Move nVHE hyp namespace macros to hyp_image.h
Date
Minor cleanup to move all macros related to prefixing nVHE hyp section
and symbol names into one place: hyp_image.h.

Signed-off-by: David Brazdil <dbrazdil@google.com>
---
arch/arm64/include/asm/hyp_image.h | 12 ++++++++++++
arch/arm64/include/asm/kvm_asm.h | 8 +-------
arch/arm64/kernel/image-vars.h | 2 --
3 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/include/asm/hyp_image.h b/arch/arm64/include/asm/hyp_image.h
index 5b1e3b9ef376..9848de588238 100644
--- a/arch/arm64/include/asm/hyp_image.h
+++ b/arch/arm64/include/asm/hyp_image.h
@@ -7,6 +7,12 @@
#ifndef __ARM64_HYP_IMAGE_H__
#define __ARM64_HYP_IMAGE_H__

+/*
+ * KVM nVHE code has its own symbol namespace prefixed with __kvm_nvhe_,
+ * to separate it from the kernel proper.
+ */
+#define kvm_nvhe_sym(sym) __kvm_nvhe_##sym
+
#ifdef LINKER_SCRIPT

/*
@@ -19,6 +25,12 @@
#define HYP_SECTION(NAME) \
HYP_SECTION_NAME(NAME) : { *(NAME NAME##.[0-9a-zA-Z_]*) }

+/*
+ * Defines a linker script alias of a kernel-proper symbol referenced by
+ * KVM nVHE hyp code.
+ */
+#define KVM_NVHE_ALIAS(sym) kvm_nvhe_sym(sym) = sym;
+
#endif /* LINKER_SCRIPT */

#endif /* __ARM64_HYP_IMAGE_H__ */
diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h
index 6f98fbd0ac81..c085032e2e3e 100644
--- a/arch/arm64/include/asm/kvm_asm.h
+++ b/arch/arm64/include/asm/kvm_asm.h
@@ -7,6 +7,7 @@
#ifndef __ARM_KVM_ASM_H__
#define __ARM_KVM_ASM_H__

+#include <asm/hyp_image.h>
#include <asm/virt.h>

#define VCPU_WORKAROUND_2_FLAG_SHIFT 0
@@ -42,13 +43,6 @@

#include <linux/mm.h>

-/*
- * Translate name of a symbol defined in nVHE hyp to the name seen
- * by kernel proper. All nVHE symbols are prefixed by the build system
- * to avoid clashes with the VHE variants.
- */
-#define kvm_nvhe_sym(sym) __kvm_nvhe_##sym
-
#define DECLARE_KVM_VHE_SYM(sym) extern char sym[]
#define DECLARE_KVM_NVHE_SYM(sym) extern char kvm_nvhe_sym(sym)[]

diff --git a/arch/arm64/kernel/image-vars.h b/arch/arm64/kernel/image-vars.h
index 8982b68289b7..76da2ad1010c 100644
--- a/arch/arm64/kernel/image-vars.h
+++ b/arch/arm64/kernel/image-vars.h
@@ -61,8 +61,6 @@ __efistub__ctype = _ctype;
* memory mappings.
*/

-#define KVM_NVHE_ALIAS(sym) __kvm_nvhe_##sym = sym;
-
/* Alternative callbacks for init-time patching of nVHE hyp code. */
KVM_NVHE_ALIAS(arm64_enable_wa2_handling);
KVM_NVHE_ALIAS(kvm_patch_vector_branch);
--
2.28.0.618.gf4bc123cb7-goog
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