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https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
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9fac145b6d
Every architecture that supports hugetlb_cma command line parameter reserves CMA areas for hugetlb during setup_arch(). This obfuscates the ordering of hugetlb CMA initialization with respect to the rest initialization of the core MM. Introduce arch_hugetlb_cma_order() callback to allow architectures report the desired order-per-bit of CMA areas and provide a week implementation of arch_hugetlb_cma_order() for architectures that don't support hugetlb with CMA. Use this callback in hugetlb_cma_reserve() instead if passing the order as parameter and call hugetlb_cma_reserve() from mm_core_init_early() rather than have it spread over architecture specific code. Link: https://lkml.kernel.org/r/20260111082105.290734-28-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alex Shi <alexs@kernel.org> Cc: Andreas Larsson <andreas@gaisler.com> Cc: "Borislav Petkov (AMD)" <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: David S. Miller <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Klara Modin <klarasmodin@gmail.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Magnus Lindholm <linmag7@gmail.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@suse.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Muchun Song <muchun.song@linux.dev> Cc: Oscar Salvador <osalvador@suse.de> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Pratyush Yadav <pratyush@kernel.org> Cc: Richard Weinberger <richard@nod.at> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_POWERPC_HUGETLB_H
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#define _ASM_POWERPC_HUGETLB_H
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#ifdef CONFIG_HUGETLB_PAGE
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#include <asm/page.h>
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#ifdef CONFIG_PPC_BOOK3S_64
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#include <asm/book3s/64/hugetlb.h>
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#elif defined(CONFIG_PPC_E500)
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#include <asm/nohash/hugetlb-e500.h>
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#elif defined(CONFIG_PPC_8xx)
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#include <asm/nohash/32/hugetlb-8xx.h>
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#endif /* CONFIG_PPC_BOOK3S_64 */
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extern bool hugetlb_disabled;
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static inline bool hugepages_supported(void)
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{
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if (hugetlb_disabled)
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return false;
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return HPAGE_SHIFT != 0;
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}
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#define hugepages_supported hugepages_supported
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void __init hugetlbpage_init_defaultsize(void);
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int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
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unsigned long len);
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static inline int is_hugepage_only_range(struct mm_struct *mm,
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unsigned long addr,
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unsigned long len)
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{
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if (IS_ENABLED(CONFIG_PPC_64S_HASH_MMU) && !radix_enabled())
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return slice_is_hugepage_only_range(mm, addr, len);
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return 0;
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}
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#define is_hugepage_only_range is_hugepage_only_range
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#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
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void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep,
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pte_t pte, unsigned long sz);
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#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
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static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
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unsigned long addr, pte_t *ptep,
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unsigned long sz)
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{
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return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1));
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}
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#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
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static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
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unsigned long addr, pte_t *ptep)
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{
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pte_t pte;
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unsigned long sz = huge_page_size(hstate_vma(vma));
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pte = huge_ptep_get_and_clear(vma->vm_mm, addr, ptep, sz);
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flush_hugetlb_page(vma, addr);
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return pte;
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}
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#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
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int huge_ptep_set_access_flags(struct vm_area_struct *vma,
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unsigned long addr, pte_t *ptep,
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pte_t pte, int dirty);
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#include <asm-generic/hugetlb.h>
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#else /* ! CONFIG_HUGETLB_PAGE */
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static inline void flush_hugetlb_page(struct vm_area_struct *vma,
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unsigned long vmaddr)
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{
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}
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static inline void __init hugetlbpage_init_defaultsize(void)
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{
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}
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#endif /* CONFIG_HUGETLB_PAGE */
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#endif /* _ASM_POWERPC_HUGETLB_H */
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