Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
#ifndef _ASM_ARM64_VMALLOC_H
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#define _ASM_ARM64_VMALLOC_H
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
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#define arch_vmap_pud_supported arch_vmap_pud_supported
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static inline bool arch_vmap_pud_supported(pgprot_t prot)
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{
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return pud_sect_supported();
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}
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#define arch_vmap_pmd_supported arch_vmap_pmd_supported
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static inline bool arch_vmap_pmd_supported(pgprot_t prot)
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{
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return true;
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}
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#define arch_vmap_pte_range_map_size arch_vmap_pte_range_map_size
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static inline unsigned long arch_vmap_pte_range_map_size(unsigned long addr,
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unsigned long end, u64 pfn,
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unsigned int max_page_shift)
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{
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/*
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* If the block is at least CONT_PTE_SIZE in size, and is naturally
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* aligned in both virtual and physical space, then we can pte-map the
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* block using the PTE_CONT bit for more efficient use of the TLB.
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*/
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if (max_page_shift < CONT_PTE_SHIFT)
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return PAGE_SIZE;
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if (end - addr < CONT_PTE_SIZE)
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return PAGE_SIZE;
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if (!IS_ALIGNED(addr, CONT_PTE_SIZE))
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return PAGE_SIZE;
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if (!IS_ALIGNED(PFN_PHYS(pfn), CONT_PTE_SIZE))
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return PAGE_SIZE;
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return CONT_PTE_SIZE;
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}
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#define arch_vmap_pte_range_unmap_size arch_vmap_pte_range_unmap_size
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static inline unsigned long arch_vmap_pte_range_unmap_size(unsigned long addr,
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pte_t *ptep)
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{
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/*
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* The caller handles alignment so it's sufficient just to check
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* PTE_CONT.
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*/
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return pte_valid_cont(__ptep_get(ptep)) ? CONT_PTE_SIZE : PAGE_SIZE;
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}
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#define arch_vmap_pte_supported_shift arch_vmap_pte_supported_shift
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static inline int arch_vmap_pte_supported_shift(unsigned long size)
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{
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if (size >= CONT_PTE_SIZE)
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return CONT_PTE_SHIFT;
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return PAGE_SHIFT;
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}
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#endif
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#define arch_vmap_pgprot_tagged arch_vmap_pgprot_tagged
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static inline pgprot_t arch_vmap_pgprot_tagged(pgprot_t prot)
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{
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return pgprot_tagged(prot);
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}
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#endif /* _ASM_ARM64_VMALLOC_H */
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