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The init/main.c file contains some extern declarations for functions defined in architecture code, and it defines some other functions that are called from architecture code with a custom prototype. Both of those result in warnings with 'make W=1': init/calibrate.c:261:37: error: no previous prototype for 'calibrate_delay_is_known' [-Werror=missing-prototypes] init/main.c:790:20: error: no previous prototype for 'mem_encrypt_init' [-Werror=missing-prototypes] init/main.c:792:20: error: no previous prototype for 'poking_init' [-Werror=missing-prototypes] arch/arm64/kernel/irq.c:122:13: error: no previous prototype for 'init_IRQ' [-Werror=missing-prototypes] arch/arm64/kernel/time.c:55:13: error: no previous prototype for 'time_init' [-Werror=missing-prototypes] arch/x86/kernel/process.c:935:13: error: no previous prototype for 'arch_post_acpi_subsys_init' [-Werror=missing-prototypes] init/calibrate.c:261:37: error: no previous prototype for 'calibrate_delay_is_known' [-Werror=missing-prototypes] kernel/fork.c:991:20: error: no previous prototype for 'arch_task_cache_init' [-Werror=missing-prototypes] Add prototypes for all of these in include/linux/init.h or another appropriate header, and remove the duplicate declarations from architecture specific code. [sfr@canb.auug.org.au: declare time_init_early()] Link: https://lkml.kernel.org/r/20230519124311.5167221c@canb.auug.org.au Link: https://lkml.kernel.org/r/20230517131102.934196-12-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Eric Paris <eparis@redhat.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Moore <paul@paul-moore.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* AMD Memory Encryption Support
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*
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* Copyright (C) 2016 Advanced Micro Devices, Inc.
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*
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* Author: Tom Lendacky <thomas.lendacky@amd.com>
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*/
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#ifndef __X86_MEM_ENCRYPT_H__
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#define __X86_MEM_ENCRYPT_H__
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#ifndef __ASSEMBLY__
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#include <linux/init.h>
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#include <linux/cc_platform.h>
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#include <asm/bootparam.h>
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#ifdef CONFIG_AMD_MEM_ENCRYPT
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extern u64 sme_me_mask;
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extern u64 sev_status;
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void sme_encrypt_execute(unsigned long encrypted_kernel_vaddr,
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unsigned long decrypted_kernel_vaddr,
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unsigned long kernel_len,
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unsigned long encryption_wa,
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unsigned long encryption_pgd);
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void __init sme_early_encrypt(resource_size_t paddr,
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unsigned long size);
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void __init sme_early_decrypt(resource_size_t paddr,
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unsigned long size);
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void __init sme_map_bootdata(char *real_mode_data);
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void __init sme_unmap_bootdata(char *real_mode_data);
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void __init sme_early_init(void);
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void __init sev_setup_arch(void);
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void __init sme_encrypt_kernel(struct boot_params *bp);
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void __init sme_enable(struct boot_params *bp);
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int __init early_set_memory_decrypted(unsigned long vaddr, unsigned long size);
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int __init early_set_memory_encrypted(unsigned long vaddr, unsigned long size);
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void __init early_set_mem_enc_dec_hypercall(unsigned long vaddr, int npages,
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bool enc);
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void __init mem_encrypt_free_decrypted_mem(void);
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void __init sev_es_init_vc_handling(void);
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#define __bss_decrypted __section(".bss..decrypted")
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#else /* !CONFIG_AMD_MEM_ENCRYPT */
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#define sme_me_mask 0ULL
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#define sev_status 0ULL
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static inline void __init sme_early_encrypt(resource_size_t paddr,
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unsigned long size) { }
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static inline void __init sme_early_decrypt(resource_size_t paddr,
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unsigned long size) { }
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static inline void __init sme_map_bootdata(char *real_mode_data) { }
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static inline void __init sme_unmap_bootdata(char *real_mode_data) { }
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static inline void __init sme_early_init(void) { }
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static inline void __init sev_setup_arch(void) { }
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static inline void __init sme_encrypt_kernel(struct boot_params *bp) { }
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static inline void __init sme_enable(struct boot_params *bp) { }
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static inline void sev_es_init_vc_handling(void) { }
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static inline int __init
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early_set_memory_decrypted(unsigned long vaddr, unsigned long size) { return 0; }
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static inline int __init
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early_set_memory_encrypted(unsigned long vaddr, unsigned long size) { return 0; }
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static inline void __init
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early_set_mem_enc_dec_hypercall(unsigned long vaddr, int npages, bool enc) {}
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static inline void mem_encrypt_free_decrypted_mem(void) { }
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#define __bss_decrypted
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#endif /* CONFIG_AMD_MEM_ENCRYPT */
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void add_encrypt_protection_map(void);
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/*
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* The __sme_pa() and __sme_pa_nodebug() macros are meant for use when
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* writing to or comparing values from the cr3 register. Having the
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* encryption mask set in cr3 enables the PGD entry to be encrypted and
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* avoid special case handling of PGD allocations.
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*/
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#define __sme_pa(x) (__pa(x) | sme_me_mask)
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#define __sme_pa_nodebug(x) (__pa_nodebug(x) | sme_me_mask)
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extern char __start_bss_decrypted[], __end_bss_decrypted[], __start_bss_decrypted_unused[];
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static inline u64 sme_get_me_mask(void)
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{
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return sme_me_mask;
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}
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#endif /* __ASSEMBLY__ */
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#endif /* __X86_MEM_ENCRYPT_H__ */
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