6f680e70b6
If an architecture doesn't support a particular page table level as a huge vmap page size then allow it to skip defining the support query function. Link: https://lkml.kernel.org/r/20210317062402.533919-11-npiggin@gmail.com Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Suggested-by: Christoph Hellwig <hch@lst.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Ding Tianhong <dingtianhong@huawei.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Russell King <linux@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
29 lines
694 B
C
29 lines
694 B
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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#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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/*
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* Only 4k granule supports level 1 block mappings.
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* SW table walks can't handle removal of intermediate entries.
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*/
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return IS_ENABLED(CONFIG_ARM64_4K_PAGES) &&
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!IS_ENABLED(CONFIG_PTDUMP_DEBUGFS);
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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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/* See arch_vmap_pud_supported() */
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return !IS_ENABLED(CONFIG_PTDUMP_DEBUGFS);
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}
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#endif
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#endif /* _ASM_ARM64_VMALLOC_H */
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