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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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b8466fe82b
After the vga console no longer relies on global screen_info, there are only two remaining use cases: - on the x86 architecture, it is used for multiple boot methods (bzImage, EFI, Xen, kexec) to commucate the initial VGA or framebuffer settings to a number of device drivers. - on other architectures, it is only used as part of the EFI stub, and only for the three sysfb framebuffers (simpledrm, simplefb, efifb). Remove the duplicate data structure definitions by moving it into the efi-init.c file that sets it up initially for the EFI case, leaving x86 as an exception that retains its own definition for non-EFI boots. The added #ifdefs here are optional, I added them to further limit the reach of screen_info to configurations that have at least one of the users enabled. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20231017093947.3627976-1-arnd@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
117 lines
3.7 KiB
C
117 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Linker script variables to be set after section resolution, as
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* ld.lld does not like variables assigned before SECTIONS is processed.
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*/
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#ifndef __ARM64_KERNEL_IMAGE_VARS_H
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#define __ARM64_KERNEL_IMAGE_VARS_H
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#ifndef LINKER_SCRIPT
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#error This file should only be included in vmlinux.lds.S
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#endif
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PROVIDE(__efistub_primary_entry = primary_entry);
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/*
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* The EFI stub has its own symbol namespace prefixed by __efistub_, to
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* isolate it from the kernel proper. The following symbols are legally
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* accessed by the stub, so provide some aliases to make them accessible.
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* Only include data symbols here, or text symbols of functions that are
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* guaranteed to be safe when executed at another offset than they were
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* linked at. The routines below are all implemented in assembler in a
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* position independent manner
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*/
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PROVIDE(__efistub_caches_clean_inval_pou = __pi_caches_clean_inval_pou);
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PROVIDE(__efistub__text = _text);
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PROVIDE(__efistub__end = _end);
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PROVIDE(__efistub___inittext_end = __inittext_end);
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PROVIDE(__efistub__edata = _edata);
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#if defined(CONFIG_EFI_EARLYCON) || defined(CONFIG_SYSFB)
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PROVIDE(__efistub_screen_info = screen_info);
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#endif
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PROVIDE(__efistub__ctype = _ctype);
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PROVIDE(__pi___memcpy = __pi_memcpy);
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PROVIDE(__pi___memmove = __pi_memmove);
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PROVIDE(__pi___memset = __pi_memset);
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#ifdef CONFIG_KVM
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/*
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* KVM nVHE code has its own symbol namespace prefixed with __kvm_nvhe_, to
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* separate it from the kernel proper. The following symbols are legally
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* accessed by it, therefore provide aliases to make them linkable.
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* Do not include symbols which may not be safely accessed under hypervisor
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* memory mappings.
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*/
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/* Alternative callbacks for init-time patching of nVHE hyp code. */
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KVM_NVHE_ALIAS(kvm_patch_vector_branch);
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KVM_NVHE_ALIAS(kvm_update_va_mask);
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KVM_NVHE_ALIAS(kvm_get_kimage_voffset);
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KVM_NVHE_ALIAS(kvm_compute_final_ctr_el0);
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KVM_NVHE_ALIAS(spectre_bhb_patch_loop_iter);
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KVM_NVHE_ALIAS(spectre_bhb_patch_loop_mitigation_enable);
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KVM_NVHE_ALIAS(spectre_bhb_patch_wa3);
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KVM_NVHE_ALIAS(spectre_bhb_patch_clearbhb);
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KVM_NVHE_ALIAS(alt_cb_patch_nops);
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/* Global kernel state accessed by nVHE hyp code. */
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KVM_NVHE_ALIAS(kvm_vgic_global_state);
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/* Kernel symbols used to call panic() from nVHE hyp code (via ERET). */
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KVM_NVHE_ALIAS(nvhe_hyp_panic_handler);
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/* Vectors installed by hyp-init on reset HVC. */
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KVM_NVHE_ALIAS(__hyp_stub_vectors);
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/* Static keys which are set if a vGIC trap should be handled in hyp. */
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KVM_NVHE_ALIAS(vgic_v2_cpuif_trap);
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KVM_NVHE_ALIAS(vgic_v3_cpuif_trap);
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#ifdef CONFIG_ARM64_PSEUDO_NMI
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/* Static key checked in GIC_PRIO_IRQOFF. */
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KVM_NVHE_ALIAS(gic_nonsecure_priorities);
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#endif
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/* EL2 exception handling */
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KVM_NVHE_ALIAS(__start___kvm_ex_table);
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KVM_NVHE_ALIAS(__stop___kvm_ex_table);
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/* PMU available static key */
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#ifdef CONFIG_HW_PERF_EVENTS
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KVM_NVHE_ALIAS(kvm_arm_pmu_available);
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#endif
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/* Position-independent library routines */
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KVM_NVHE_ALIAS_HYP(clear_page, __pi_clear_page);
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KVM_NVHE_ALIAS_HYP(copy_page, __pi_copy_page);
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KVM_NVHE_ALIAS_HYP(memcpy, __pi_memcpy);
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KVM_NVHE_ALIAS_HYP(memset, __pi_memset);
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#ifdef CONFIG_KASAN
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KVM_NVHE_ALIAS_HYP(__memcpy, __pi_memcpy);
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KVM_NVHE_ALIAS_HYP(__memset, __pi_memset);
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#endif
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/* Hyp memory sections */
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KVM_NVHE_ALIAS(__hyp_idmap_text_start);
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KVM_NVHE_ALIAS(__hyp_idmap_text_end);
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KVM_NVHE_ALIAS(__hyp_text_start);
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KVM_NVHE_ALIAS(__hyp_text_end);
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KVM_NVHE_ALIAS(__hyp_bss_start);
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KVM_NVHE_ALIAS(__hyp_bss_end);
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KVM_NVHE_ALIAS(__hyp_rodata_start);
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KVM_NVHE_ALIAS(__hyp_rodata_end);
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/* pKVM static key */
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KVM_NVHE_ALIAS(kvm_protected_mode_initialized);
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#endif /* CONFIG_KVM */
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#ifdef CONFIG_EFI_ZBOOT
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_kernel_codesize = ABSOLUTE(__inittext_end - _text);
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#endif
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#endif /* __ARM64_KERNEL_IMAGE_VARS_H */
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