From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/arm64/include/asm/hyp_image.h | 68 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 arch/arm64/include/asm/hyp_image.h (limited to 'arch/arm64/include/asm/hyp_image.h') diff --git a/arch/arm64/include/asm/hyp_image.h b/arch/arm64/include/asm/hyp_image.h new file mode 100644 index 0000000000..b4b3076a76 --- /dev/null +++ b/arch/arm64/include/asm/hyp_image.h @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 Google LLC. + * Written by David Brazdil + */ + +#ifndef __ARM64_HYP_IMAGE_H__ +#define __ARM64_HYP_IMAGE_H__ + +#define __HYP_CONCAT(a, b) a ## b +#define HYP_CONCAT(a, b) __HYP_CONCAT(a, b) + +#ifndef __KVM_NVHE_HYPERVISOR__ +/* + * 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 +#else +#define kvm_nvhe_sym(sym) sym +#endif + +#ifdef LINKER_SCRIPT + +/* + * KVM nVHE ELF section names are prefixed with .hyp, to separate them + * from the kernel proper. + */ +#define HYP_SECTION_NAME(NAME) .hyp##NAME + +/* Symbol defined at the beginning of each hyp section. */ +#define HYP_SECTION_SYMBOL_NAME(NAME) \ + HYP_CONCAT(__hyp_section_, HYP_SECTION_NAME(NAME)) + +/* + * Helper to generate linker script statements starting a hyp section. + * + * A symbol with a well-known name is defined at the first byte. This + * is used as a base for hyp relocations (see gen-hyprel.c). It must + * be defined inside the section so the linker of `vmlinux` cannot + * separate it from the section data. + */ +#define BEGIN_HYP_SECTION(NAME) \ + HYP_SECTION_NAME(NAME) : { \ + HYP_SECTION_SYMBOL_NAME(NAME) = .; + +/* Helper to generate linker script statements ending a hyp section. */ +#define END_HYP_SECTION \ + } + +/* Defines an ELF hyp section from input section @NAME and its subsections. */ +#define HYP_SECTION(NAME) \ + BEGIN_HYP_SECTION(NAME) \ + *(NAME NAME##.*) \ + END_HYP_SECTION + +/* + * 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; + +/* Defines a linker script alias for KVM nVHE hyp symbols */ +#define KVM_NVHE_ALIAS_HYP(first, sec) kvm_nvhe_sym(first) = kvm_nvhe_sym(sec); + +#endif /* LINKER_SCRIPT */ + +#endif /* __ARM64_HYP_IMAGE_H__ */ -- cgit v1.2.3