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1af19331a3
Book3S PACA memory allocation is restricted by the RMA limit and also must not take SLB faults when accessed in virtual mode. Currently a fixed 256MB limit is used for this, which is imprecise and sub-optimal. Update the paca allocation limits to use use the ppc64_rma_size for RMA limit, and share the safe_stack_limit() that is currently used for stack allocations that must not take virtual mode faults. The safe_stack_limit() name is changed to ppc64_bolted_size() to match ppc64_rma_size and some comments are updated. We also need to use early_mmu_has_feature() because we are now calling this function prior to the jump label patching that enables mmu_has_feature(). Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Change mmu_has_feature() to early_mmu_has_feature()] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/*
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* Prototypes for functions that are shared between setup_(32|64|common).c
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*
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* Copyright 2016 Michael Ellerman, IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef __ARCH_POWERPC_KERNEL_SETUP_H
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#define __ARCH_POWERPC_KERNEL_SETUP_H
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void initialize_cache_info(void);
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void irqstack_early_init(void);
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#ifdef CONFIG_PPC32
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void setup_power_save(void);
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#else
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static inline void setup_power_save(void) { };
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#endif
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#if defined(CONFIG_PPC64) && defined(CONFIG_SMP)
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void check_smt_enabled(void);
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#else
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static inline void check_smt_enabled(void) { };
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#endif
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#if defined(CONFIG_PPC_BOOK3E) && defined(CONFIG_SMP)
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void setup_tlb_core_data(void);
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#else
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static inline void setup_tlb_core_data(void) { };
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#endif
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#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_BOOKE) || defined(CONFIG_40x)
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void exc_lvl_early_init(void);
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#else
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static inline void exc_lvl_early_init(void) { };
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#endif
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#ifdef CONFIG_PPC64
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void emergency_stack_init(void);
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#else
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static inline void emergency_stack_init(void) { };
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#endif
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#ifdef CONFIG_PPC64
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void record_spr_defaults(void);
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#else
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static inline void record_spr_defaults(void) { };
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#endif
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#ifdef CONFIG_PPC64
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u64 ppc64_bolted_size(void);
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#endif
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/*
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* Having this in kvm_ppc.h makes include dependencies too
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* tricky to solve for setup-common.c so have it here.
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*/
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#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
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void kvm_cma_reserve(void);
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#else
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static inline void kvm_cma_reserve(void) { };
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#endif
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#endif /* __ARCH_POWERPC_KERNEL_SETUP_H */
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