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310f541a02
This sets the HAVE_ARCH_HUGE_VMAP option, and defines the required page table functions. With this feature, ioremap area will be mapped with huge page granularity according to its actual size. This feature can be disabled by kernel parameter "nohugeiomap". Signed-off-by: Liu Shixin <liushixin2@huawei.com> Reviewed-by: Björn Töpel <bjorn@kernel.org> Tested-by: Björn Töpel <bjorn@kernel.org> Link: https://lore.kernel.org/r/20221012120038.1034354-2-liushixin2@huawei.com [Palmer: minor formatting] Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
23 lines
441 B
C
23 lines
441 B
C
#ifndef _ASM_RISCV_VMALLOC_H
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#define _ASM_RISCV_VMALLOC_H
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#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
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#define IOREMAP_MAX_ORDER (PUD_SHIFT)
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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 true;
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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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#endif
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#endif /* _ASM_RISCV_VMALLOC_H */
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