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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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2f85e7f948
sh only had pud_page_vaddr, but not pud_page. [hch@lst.de: sh: stub out pud_page] Link: http://lkml.kernel.org/r/20190701151818.32227-2-hch@lst.de Link: http://lkml.kernel.org/r/20190625143715.1689-6-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Guenter Roeck <linux@roeck-us.net> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Miller <davem@davemloft.net> Cc: James Hogan <jhogan@kernel.org> Cc: Jason Gunthorpe <jgg@mellanox.com> Cc: Khalid Aziz <khalid.aziz@oracle.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rich Felker <dalias@libc.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_SH_PGTABLE_3LEVEL_H
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#define __ASM_SH_PGTABLE_3LEVEL_H
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#define __ARCH_USE_5LEVEL_HACK
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#include <asm-generic/pgtable-nopud.h>
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/*
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* Some cores need a 3-level page table layout, for example when using
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* 64-bit PTEs and 4K pages.
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*/
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#define PAGETABLE_LEVELS 3
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#define PTE_MAGNITUDE 3 /* 64-bit PTEs on SH-X2 TLB */
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/* PGD bits */
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#define PGDIR_SHIFT 30
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#define PTRS_PER_PGD 4
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#define USER_PTRS_PER_PGD 2
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/* PMD bits */
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#define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT - PTE_MAGNITUDE))
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#define PMD_SIZE (1UL << PMD_SHIFT)
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#define PMD_MASK (~(PMD_SIZE-1))
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#define PTRS_PER_PMD ((1 << PGDIR_SHIFT) / PMD_SIZE)
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#define pmd_ERROR(e) \
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printk("%s:%d: bad pmd %016llx.\n", __FILE__, __LINE__, pmd_val(e))
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typedef struct { unsigned long long pmd; } pmd_t;
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#define pmd_val(x) ((x).pmd)
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#define __pmd(x) ((pmd_t) { (x) } )
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static inline unsigned long pud_page_vaddr(pud_t pud)
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{
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return pud_val(pud);
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}
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/* only used by the stubbed out hugetlb gup code, should never be called */
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#define pud_page(pud) NULL
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#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
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static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
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{
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return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
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}
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#define pud_none(x) (!pud_val(x))
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#define pud_present(x) (pud_val(x))
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#define pud_clear(xp) do { set_pud(xp, __pud(0)); } while (0)
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#define pud_bad(x) (pud_val(x) & ~PAGE_MASK)
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/*
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* (puds are folded into pgds so this doesn't get actually called,
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* but the define is needed for a generic inline function.)
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*/
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#define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0)
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#endif /* __ASM_SH_PGTABLE_3LEVEL_H */
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